CN107889250A

CN107889250A - The determination method, apparatus and system of downlink resource granularity

Info

Publication number: CN107889250A
Application number: CN201610879219.2A
Authority: CN
Inventors: 石靖; 夏树强; 张雯; 韩祥辉; 梁春丽; 任敏; 张文峰
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2016-09-30
Filing date: 2016-09-30
Publication date: 2018-04-06
Also published as: WO2018059513A1

Abstract

The invention provides a kind of determination method, apparatus of downlink resource granularity and system, wherein, this method includes：Base station configuration includes x Physical Resource Block PRB set, wherein, the part or all of resource in x PRB set should be included and be used to send the second down control channel and second downstream data channel, wherein, the x is positive integer；The physical layer signaling that the base station is carried by high-level signaling or the first down control channel sends the configuration information for configuring the set.Using above-mentioned technical proposal, solve the problems, such as that low time delay transmission conflicts with LTE bandwidth occupied by service in correlation technique, it can cause low time delay business and LTE traditional businesses efficiently using downlink resource in system bandwidth and avoid the wasting of resources or conflict, reduce DL sTTI band internal resource assignment overheads simultaneously, purpose rationally coexists with LTE traditional businesses so as to reach low time delay business.

Description

The determination method, apparatus and system of downlink resource granularity

Technical field

The present invention relates to the communications field, a kind of determination method, apparatus in particular to downlink resource granularity and it is System.

Background technology

1ms defeated time interval (Transmission Time Interval, referred to as TTI) is used in LTE system, That is 1ms subframes.Consider to introduce TTI binding during up coverage enhancement in existing LTE system, passed together by multiple TTI bindings A defeated data block, that is, increase Transmission Time Interval.Third generation partner program (3rd Generation at present Partnership Project, referred to as 3GPP) tissue expands the research for reducing Transmission Time Interval, so as to obtain user plane Time and chain of command time delay reduce.

The method that presently, there are two kinds of reduction TTI, one kind is by expanding OFDM (Orthogonal Frequency Division Multiplexing, referred to as OFDM) subcarrier spacing of system reduces single OFDM symbol Duration, this method relates in 5G high frequency communication system and super-intensive network；Another method is single by reducing The quantity of OFDM symbol reduces TTI length in individual TTI, and the benefit of this method is can be completely compatible with existing LTE system.

Currently for second method, the user that supporting time delay reduces needs the TTI in reduction (short TTI, to be referred to as STTI) short Physical Downlink Control Channel (Short Physical Downlink Control Channel, letter are received in length Referred to as sPDCCH) and short physical down data channel (Short Physical Downlink Shared Channel, referred to as sPDSCH).Current possible working method is by by Physical Downlink Control Channel (Physical Downlink Control Channel, referred to as PDCCH) in carrying two-stage DCI (two-level Downlink Control Information) the One-level DCI dynamic notification DL sTTI band resource allocation informations, sPDCCH is further received in DL sTTI band and is led to Cross demodulation sPDCCH and then receive sPDSCH in DL sTTI band.The distribution for DL sTTI band does not have spy at present Other consideration, but at least need to consider and physical down data channel (Physical Downlink Shared in LTE system Channel, referred to as PDSCH) rationally coexist, while in DL sTTI band sPDCCH and sPDSCH resource allocation and Both coexist is also required to consider.Therefore for the resource inside DL sTTI band resource allocations and DL sTTI band point With being required for further studying.

For the problem of in correlation technique, low time delay transmission conflicts with LTE bandwidth occupied by service, there is presently no effectively Solution.

The content of the invention

The embodiments of the invention provide a kind of determination method, apparatus of downlink resource granularity and system, at least to solve phase The problem of low time delay transmission conflicts with LTE bandwidth occupied by service in the technology of pass.

According to another embodiment of the invention, a kind of determination method of downlink resource granularity is additionally provided, its feature exists In：

Base station configuration includes x Physical Resource Block PRB set, wherein, the part in the set comprising x PRB Or whole resources are used to send the second down control channel and second downstream data channel, wherein, the x is positive integer；

The physical layer signaling that the base station is carried by high-level signaling or the first down control channel is sent for configuring institute State the configuration information of set；

Wherein, the x meets at least one following condition：For the integer of first downstream data channel resource allocation granularity Times；For the second down control channel resources unit take PRB number M or M/2 orIntegral multiple；For second time line number It is believed that the integral multiple of road resource allocation granularity；

Wherein, frequency domain where first down control channel is not only restricted to the frequency domain where x PRB, institute Frequency domain where stating the second down control channel and the second downstream data channel is limited to the frequency domain model where x PRB Enclose.

Alternatively, the x be the second down control channel resources unit take PRB number M or M/2 orIt is whole Several times, including：The x be the second down control channel resources unit occupancy PRB number M or M/2 orC times, its In, the C is the integer more than or equal to 0.

Alternatively, the resource allocation granularity of the second downstream data channel is one below：

PRB number M or M/2 that the second down control channel resources unit takes orIndividual PRB；One PRB； X/4 PRB；X/8 PRB.

Alternatively, the x meets following condition simultaneously：

For the integral multiple of the first downstream data channel resource allocation granularity, the second down control channel resources list The integral multiple for the PRB numbers that member takes.

Alternatively, in the case where the first downstream data channel resource allocation granularity is resource block group RBG, the x Meet one of following condition：

What the first downstream data channel resource allocation granularity and the second down control channel resources unit took PRB number M or M/2 orCommon multiple integral multiple；

Or the first downstream data channel resource allocation granularity M or M/2 orTimes, wherein, the M is institute State the PRB numbers of the second down control channel resources unit occupancy.

Alternatively, the resource allocation granularity of the second downstream data channel is one below：RBG；Described second is descending Control channel resource unit take PRB number M or M/2 orIndividual PRB；One PRB；X/4 PRB；X/8 PRB.

Alternatively, it is described in the case where the x meets the integral multiple for first downstream data channel resource allocation granularity First downstream data channel resource allocation granularity is PRB or RBG, and the x is the first downstream data channel resource allocation grain C times of degree, wherein, the C is the integer more than or equal to 0.

Alternatively, the resource allocation granularity of the second downstream data channel meets one of following condition：RBG；Under second Row control channel resource unit take PRB number M or M/2 orIndividual PRB；One PRB；X/4 PRB；X/8 PRB； 1 part in Y part resources, the resource of the second downstream data channel is at most divided into Y parts, wherein, Y-1 part resource size phases Together, Y is positive integer.

Alternatively, the size of Y parts resource is one below：

Y-1 part resource sizes areY part resource sizes are

Y-1 part resource sizes areY part resource sizes areWherein P is The PRB numbers that RBG is included；

Y-1 part resource sizes areY part resource sizes areWherein Q is M or M/2 orM is the PRB numbers that sCCE takes.

Alternatively, the resource allocation granularity of the second downstream data channel is x/4 or x/8 or at most distributes Y part resources When, including one below：

3bits is used to indicate the following information in most 4 parts of resources in the second down control channel：It is { whole resources, preceding 1/2 part of resource, rear 1/2 resource, preceding 1/4 resource, secondary preceding 1/4 resource, secondary rear 1/4 resource, last 1/4 money Source }；

4bits is used to indicate the following information in most 8 parts of resources in the second down control channel：It is { whole resources, preceding 1/2 resource, rear 1/2 resource, preceding 1/4 resource, secondary preceding 1/4 resource, it is secondary after 1/4 resource, last 1/4 resource, First part 1/8 of resource, second part 1/8 of resource, the 3rd part 1/8 of resource, the 4th part 1/8 of resource, the 5th part 1/8 of money Source, the 6th part 1/8 of resource, the 7th part 1/8 of resource, the 8th part 1/8 of resource }.

Alternatively, when the resource allocation granularity of the second downstream data channel is x/4 PRB or x/8 PRB, including One below：

Alternatively, when first down control channel is located at the first two symbol or first three symbol in subframe, carrying Downlink Control Information include：The uplink authorization of dispatching uplink data channel；Or the uplink authorization of dispatching uplink data channel, the The downstream grants of two downstream data channels.

Alternatively, when the Downlink Control Information of the carrying is dispatches the downstream grants of second downstream data channel, scheduling Second downstream data channel be second time line number in first TTI in subframe after the first two symbol or first three symbol It is believed that road.

Terminal receives the x Physical Resource Block PRB set of distribution, wherein, the part in the set comprising x PRB Or whole resources are used to send the second down control channel and second downstream data channel, wherein, the x is positive integer；

The terminal receives to be used for by what the physical layer signaling of high-level signaling or the carrying of the first down control channel was sent Configure the configuration information of the set；

Alternatively, the x meets following condition simultaneously：For the integer of the first downstream data channel resource allocation granularity Times, the integral multiple for the PRB numbers that the second down control channel resources unit takes.

Alternatively, the resource allocation granularity of the second downstream data channel meets one of following condition：RBG；Under second Row control channel resource unit take PRB number M or M/2 orIndividual PRB；One PRB；X/4 PRB；X/8 PRB；Y 1 part in part resource, the resource of the second downstream data channel is at most divided into Y parts, wherein, Y-1 part resource sizes are identical, Y is positive integer.

Alternatively, the size of Y parts resource is one below：

Y-1 part resource sizes areY part resource sizes are

Alternatively, when first down control channel is located at the first two symbol or first three symbol in subframe, carrying Downlink Control Information include：

The uplink authorization of dispatching uplink data channel；Or

Dispatch the uplink authorization of the uplink data channels, the downstream grants of second downstream data channel.

Alternatively, terminal is when receiving Downlink Control Information, including：

Received in first down control channel preceding two in the uplink authorization for dispatching the uplink data channels, subframe At least one of downstream grants of second downstream data channel in first TTI after individual symbol or first three symbol, with And receive and dispatched described in the TTI in first TTI in the subframe after the first two symbol or first three symbol The downstream grants of second downstream data channel.

Alternatively, the terminal is when receiving the Downlink Control Information, including：In first down control channel Receive dispatching uplink data channel uplink authorization, it is undesirable receive in scheduling subframe the first two symbol or first three symbol after First TTI in second downstream data channel downstream grants, and in the subframe the first two symbol or first three The downstream grants for dispatching the second downstream data channel in the TTI are received in first TTI after symbol.

Alternatively, the terminal receives when receiving the Downlink Control Information in first down control channel In first TTI in the uplink authorization of dispatching uplink data channel, subframe after the first two symbol or first three symbol At least one of downstream grants of two downstream data channels, and in the subframe after the first two symbol or first three symbol First TTI in do not expect to receive the downstream grants for dispatching the second downstream data channel in the TTI.

According to another embodiment of the invention, a kind of determining device of downlink resource granularity is additionally provided, applied to base Stand, it is characterised in that described device also includes：

Configuration module, x Physical Resource Block PRB set is included for configuring, wherein, the set for including x PRB In part or all of resource be used to send the second down control channel and second downstream data channel, wherein, the x is just whole Number；

Sending module, the physical layer signaling for being carried by high-level signaling or the first down control channel are sent for matching somebody with somebody Put the configuration information of the set；

Alternatively, the x meets following condition simultaneously：

Alternatively, the size of Y parts resource is one below：

Y-1 part resource sizes areY part resource sizes are

Alternatively, when first down control channel is located at the first two symbol in subframe, second time line number is being carried It is believed that during the downstream grants in road, the second downstream data channel of scheduling is second in the TTI in subframe after the first two symbol Downstream data channel.

According to another embodiment of the invention, a kind of determining device of downlink resource granularity is additionally provided, applied to end End, it is characterised in that described device includes：

Receiving module, for receiving the physical layer signaling transmission carried by high-level signaling or the first down control channel For the configuration information of configuration set, wherein the set is gathered for x Physical Resource Block PRB of base station distribution, wherein, it is described Part or all of resource in set comprising x PRB is used to send the second down control channel and second downstream data channel, Wherein, the x is positive integer；

Alternatively, the size of Y parts resource is one below：

Y-1 part resource sizes areY part resource sizes are

Y-1 part resource sizes areY part resource sizes areWherein Q is M or M/2 orM is the PRB numbers that short channel control unit sCCE takes.

According to another embodiment of the invention, a kind of determination system of downlink resource granularity is additionally provided, its feature exists In the system includes：Base station, terminal；

The base station is the set that terminal configuration includes x Physical Resource Block PRB, wherein, it is described to include x PRB Set in part or all of resource be used to send the second down control channel and second downstream data channel, wherein, the x For positive integer；

The physical layer signaling that the base station is carried by high-level signaling or the first down control channel is sent to the terminal For configuring the configuration information of the set；

Alternatively, the x meets following condition simultaneously：

Alternatively, the size of Y parts resource is one below：

Y-1 part resource sizes areY part resource sizes are

According to still another embodiment of the invention, a kind of storage medium is additionally provided.The storage medium is arranged to storage and used In the program code for performing following steps：

Alternatively, storage medium is also configured to the program code that storage is used to perform following steps：

By the present invention, base station configuration includes x Physical Resource Block PRB set, wherein, x PRB set should be included In part or all of resource be used to send the second down control channel and second downstream data channel, wherein, the x is just whole Number；The physical layer signaling that the base station is carried by high-level signaling or the first down control channel is sent for configuring matching somebody with somebody for the set Confidence ceases；Wherein, the x meets at least one following condition：For the integral multiple of first downstream data channel resource allocation granularity；For Second down control channel resources unit take PRB number M or M/2 orIntegral multiple；For second downstream data channel The integral multiple of resource allocation granularity；Wherein, frequency domain where first down control channel is not only restricted to where x PRB Frequency domain where frequency domain, second down control channel and the second downstream data channel is limited to where x PRB Frequency domain.Solve the problems, such as that low time delay transmission conflicts with LTE bandwidth occupied by service in correlation technique, can cause low time delay Business and LTE traditional businesses efficiently using downlink resource in system bandwidth and avoid the wasting of resources or conflicted, while reduce DL STTI band internal resource assignment overheads, purpose rationally coexists with LTE traditional businesses so as to reach low time delay business.

Brief description of the drawings

Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：

Fig. 1 is a kind of determination method flow diagram one of downlink resource granularity according to embodiments of the present invention；

Fig. 2 is a kind of determination method flow diagram two of downlink resource granularity according to embodiments of the present invention；

Fig. 3 is to meet the frequency domain size for the second down control channel resources unit according to x in the specific embodiment of the invention Integral multiple when schematic diagram one；

Fig. 4 is to be met according to the x of the specific embodiment of the invention for first downstream data channel resource allocation granularity and the The schematic diagram two of the integral multiple of the minimum common divisor of the frequency domain size of two down control channel resources units；

Fig. 5 is that the x in the specific embodiment of the invention meets for the whole of first downstream data channel resource allocation granularity The schematic diagram three of several times；

Fig. 6 is the schematic diagram according to the specific embodiment of the invention four；

Fig. 7 is the schematic diagram according to the specific embodiment of the invention five；

Fig. 8 is the determination apparatus structure frame according to the preferred embodiment of the invention applied to a kind of downlink resource granularity in base station Figure.

Embodiment

Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that do not conflicting In the case of, the feature in embodiment and embodiment in the application can be mutually combined.

It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, " Two " etc. be for distinguishing similar object, without for describing specific order or precedence.

It should be noted that when the present invention is applied to LTE system, the first down control channel refers to PDCCH, first time line number It is believed that Dow Jones index PDSCH.Second down control channel refers to sPDCCH, and second downstream data channel refers to sPDSCH.It is heretofore described Uplink data channels refer to sPUSCH.Wherein sPDCCH, sPDSCH, sPUSCH are in short TTI (short TTI, referred to as sTTI) Channel, sTTI length is 2 OFDM symbols or 3 OFDM symbols or 4 OFDM symbols or 1 time slot.

Embodiment 1

Method and step described in present specification can be run in Long Term Evolution LTE system, the network rack of the network Structure can include network side equipment (such as base station) and terminal.One kind is provided in the present embodiment can run on above-mentioned network rack The determination method of downlink resource granularity on structure is, it is necessary to illustrate, the above- mentioned information transmission side provided in the embodiment of the present application The running environment of method is not limited to the above-mentioned network architecture.

Fig. 1 is a kind of determination method flow diagram one of downlink resource granularity according to embodiments of the present invention, as shown in figure 1, Comprise the following steps：

Step S102, base station configuration include x Physical Resource Block PRB set, wherein, in the set that x PRB should be included Part or all of resource be used to send the second down control channel and second downstream data channel, wherein, the x is positive integer； Wherein, the x meets at least one following condition：For the integral multiple of first downstream data channel resource allocation granularity；Under second Row control channel resource unit take PRB number M or M/2 orIntegral multiple；For second downstream data channel resource point Integral multiple with granularity；

Step S104, the physical layer signaling that the base station is carried by high-level signaling or the first down control channel, which is sent, to be used for Configure the configuration information of the set；Wherein, frequency domain where first down control channel is not only restricted to where x PRB Frequency domain where frequency domain, second down control channel and the second downstream data channel is limited to where x PRB Frequency domain.

By above-mentioned steps, solve the problems, such as that low time delay transmission conflicts with LTE bandwidth occupied by service in correlation technique, can To cause low time delay business and LTE traditional businesses efficiently using downlink resource in system bandwidth and avoid the wasting of resources or punching It is prominent, while reduce DL sTTI band internal resource assignment overheads, it is rationally common with LTE traditional businesses so as to reach low time delay business Deposit purpose.

Alternatively, the x be the second down control channel resources unit take PRB number M or M/2 orInteger Times, including：The x be the second down control channel resources unit occupancy PRB number M or M/2 orC times, wherein, The C is the integer more than or equal to 0.

The second down control channel resources unit take PRB number M or M/2 orIndividual PRB；One PRB；x/4 Individual PRB；X/8 PRB.

Alternatively, the x meets following condition simultaneously：For the integral multiple of the first downstream data channel resource allocation granularity, The integral multiple for the PRB numbers that the second down control channel resources unit takes.

Alternatively, in the case where the first downstream data channel resource allocation granularity is resource block group RBG, the x meets One of following condition：What the first downstream data channel resource allocation granularity and the second down control channel resources unit took PRB number M or M/2 orCommon multiple integral multiple；Or the M of the first downstream data channel resource allocation granularity Or M/2 orTimes, wherein, the M is the PRB numbers that the second down control channel resources unit takes.

Alternatively, the resource allocation granularity of the second downstream data channel is one below：RBG；The second descending control Channel resource units take PRB number M or M/2 orIndividual PRB；One PRB；X/4 PRB；X/8 PRB.

Alternatively, in the case where the x meets the integral multiple for first downstream data channel resource allocation granularity, this first Downstream data channel resource allocation granularity is PRB or RBG, and the x is C times of the first downstream data channel resource allocation granularity, Wherein, the C is the integer more than or equal to 0.

Alternatively, the resource allocation granularity of the second downstream data channel meets one of following condition：RBG；Second is descending Control channel resource unit take PRB number M or M/2 orIndividual PRB；One PRB；X/4 PRB；X/8 PRB；Y parts 1 part in resource, the resource of the second downstream data channel is at most divided into Y parts, wherein, Y-1 part resource sizes are identical, and Y is Positive integer.

Alternatively, the size of Y part resources is one below：

Y-1 part resource sizes areY part resource sizes are

Alternatively, when the resource allocation granularity of the second downstream data channel is x/4 or x/8 or at most distributes Y part resources, Including one below：

Alternatively, when the resource allocation granularity of the second downstream data channel is x/4 PRB or x/8 PRB, including with It is one of lower：

Alternatively, when first down control channel is located at the first two symbol or first three symbol in subframe, carrying Downlink Control Information includes：The uplink authorization of dispatching uplink data channel；Or the uplink authorization of dispatching uplink data channel, second The downstream grants of downstream data channel.

Alternatively, when the Downlink Control Information of the carrying is dispatches the downstream grants of second downstream data channel, scheduling Second downstream data channel is the first two symbol in subframe or the second downstream data in first TTI after first three symbol Channel.

Fig. 2 is a kind of determination method flow diagram two of downlink resource granularity according to embodiments of the present invention, as shown in Fig. 2 Comprise the following steps：

Step S202, terminal receive the x Physical Resource Block PRB set of distribution, wherein, in the set that x PRB should be included Part or all of resource be used to send the second down control channel and second downstream data channel, wherein, the x is positive integer； Wherein, the x meets at least one following condition：For the integral multiple of first downstream data channel resource allocation granularity；Under second Row control channel resource unit take PRB number M or M/2 orIntegral multiple；For second downstream data channel resource point Integral multiple with granularity；

Step S204, the terminal receive the physical layer signaling carried by high-level signaling or the first down control channel and sent Be used for configure the configuration information of the set；Wherein, frequency domain where first down control channel is not only restricted to x PRB Frequency domain where the frequency domain at place, second down control channel and the second downstream data channel is limited to x PRB The frequency domain at place.

Alternatively, the resource allocation granularity of the second downstream data channel is one below：Second down control channel Resource unit take PRB number M or M/2 orIndividual PRB；One PRB；X/4 PRB；X/8 PRB.

Alternatively, the resource allocation granularity of the second downstream data channel meets one of following condition：RBG；Second is descending Control channel resource unit take PRB number M or M/2 orIndividual PRB；One PRB；X/4 PRB；X/8 PRB；Y 1 part in part resource, the resource of the second downstream data channel is at most divided into Y parts, wherein, Y-1 part resource sizes are identical, Y For positive integer.

Alternatively, the size of Y part resources is one below：

Y-1 part resource sizes areY part resource sizes are

Alternatively, when first down control channel is located at the first two symbol or first three symbol in subframe, carrying Downlink Control Information includes：

The uplink authorization of dispatching uplink data channel；Or

The first two in the uplink authorization for dispatching the uplink data channels, subframe is received in first down control channel to accord with Number or first three symbol after first TTI at least one of downstream grants of second downstream data channel, Yi Ji The second time line number dispatched in the TTI is received in first TTI in the subframe after the first two symbol or first three symbol It is believed that the downstream grants in road.

Alternatively, the terminal is when receiving the Downlink Control Information, including：Receive and adjust in first down control channel Spend the uplink authorization of uplink data channels, undesirable receive the first two symbol in scheduling subframe or first after first three symbol The downstream grants of second downstream data channel in individual TTI, and in the burst after the first two symbol or first three symbol First TTI in receive dispatch the TTI in second downstream data channel downstream grants.

Alternatively, the terminal is received in scheduling when receiving the Downlink Control Information in first down control channel Second in first TTI in the uplink authorization of row data channel, subframe after the first two symbol or first three symbol is descending At least one of downstream grants of data channel, and first after the first two symbol or first three symbol in the burst Do not expect to receive the downstream grants for dispatching the second downstream data channel in the TTI in TTI.

It is described in detail with reference to the specific embodiment of the present invention.

In embodiments of the present invention, there is provided a kind of determination method of downlink resource granularity, to cause terminal can be with short TTI Receive time delay reduce when downlink information and with LTE traditional businesses transmission rationally coexist.In order to more fully hereinafter understand this The characteristics of inventive embodiments and technology contents, carried out below in conjunction with the accompanying drawings with realization of the specific embodiment to the embodiment of the present invention detailed It is thin to illustrate, appended accompanying drawing purposes of discussion only for reference, not it is used for limiting the embodiment of the present invention.

Specific embodiment one

Base station sends the descending control containing DL sTTI band resource allocations in the first physical downlink control channel PDCCH Information processed, and the DL sTTI band using the resource allocation methods of type in LTE system 0/1/2 or other method but make Resource particle degree is the second Physical Downlink Control Channel sPDCCH control channel unit sCCE frequency domain size.Wherein with SCCE=3PRB and exemplified by being limited in an OFDM symbol.Base station sequentially sends multiple second physical down controls in Candidate Set The resource allocation of the second physical down data channel is included in the Downlink Control Information of channel sPDCCH processed, wherein sPDCCH carrying Information.

Fig. 3 is big for the frequency domain of the second down control channel resources unit according to x satisfactions in the specific embodiment of the invention one Schematic diagram one during small integral multiple, as shown in figure 3, unused portion can in symbol where sPDCCH in the sTTI of two symbols Used for sPDSCH, i.e., now resource index is more than the sPDCCH that terminal detects and is located at it in sPDCCH unused portions It can be used in sPDSCH frequency domains.Now sTTI band are allocated by granularity of sCCE.Preferably, in sTTI band Comprising sCCE number be set one of { 4,8,12,16,20,24,28,32,36 }.

Resource allocation information instruction in the DCI carried during now sPDSCH is in sTTI band by sPDCCH.Example Such as, sPDSCH uses resource in sTTI band with x/4 granularity, and x is DL sTTI sizes, now resource allocation information 3bits instructions sPDSCH take whole sTTI band all, preceding 1/2, rear 1/2, preceding 1/4, secondary preceding 1/4, it is secondary afterwards 1/4, most Afterwards 1/4 }.Such as DL sTTI band are when including 16 sCCE, x/4=3 sCCE=12PRB.

Such as know DL sTTI to the DCI for including instruction DL sTTI band for the present PDCCH region blind checks of UE1 Band regional locations and area size are 16 sCCE.The blind check sPDCCH in first symbol in DL sTTI band, order Candidate Set position is detected, the DL grant of oneself, wherein resource allocation information 3bit instructions are detected in the 3rd Candidate Set 010 represent in DL sTTI band time after 1/4 frequency domain region receive sPDSCH, now due to reception sPDCCH sCCE Before sPDSCH frequency domains, therefore sPDSCH can use the money in sPDCCH places OFDM symbol corresponding to the frequency domain region Source.

Table 1 is the resource allocation conditions table according to the specific embodiment of the invention one, as shown in table 1：

Table 1

Index	Resource allocation [takes following allocation result] in sTTI band
		000	Preceding 1/4
001	Secondary preceding 1/4
		010	1/4 after secondary
011	Last 1/4
		100	Preceding 1/2
101	Afterwards 1/2
		110	All
111	Reserved state

Pass through the scheme of this specific embodiment one, the granularity and DL of the resource allocation by limiting DL sTTI band The granularity of resource allocation in sTTI band, low time delay business can be caused efficiently to be used with LTE traditional businesses in system bandwidth Downlink resource simultaneously avoids the wasting of resources or conflict, while reduces DL sTTI band internal resource assignment overheads, low so as to reach Purpose rationally coexists with LTE traditional businesses in time delay business.

Specific embodiment two

Base station sends the descending control containing DL sTTI band resource allocations in the first physical downlink control channel PDCCH Information processed, and the DL sTTI band using the resource allocation methods of type in LTE system 0/1/2 or other method but make Resource particle degree is the frequency domain of first downstream data channel resource allocation granularity and the second down control channel resources unit The integral multiple of the minimum common divisor of size；Or ERBG (enhancing resource block group) integral multiple, wherein ERBG is M times of RBG, M The PRB number included for the second down control channel resources unit sCCE.Wherein with sCCE=3PRB and it is limited in an OFDM Exemplified by symbol.Base station sequentially sends multiple second Physical Downlink Control Channel sPDCCH in Candidate Set, and wherein sPDCCH is held The resource allocation information of the second physical down data channel is included in the Downlink Control Information of load.

Unused portion is available for sPDSCH to use in symbol where sPDCCH in the sTTI of two symbols, i.e., now sPDCCH Resource index is more than the sPDCCH that terminal detects and can be used in its sPDSCH frequency domain in unused portion. Now sTTI band are allocated by granularity of ERBG.Now RBG is determines according to system bandwidth, as shown in table 2, with 20MHz Exemplified by system bandwidth, corresponding PRB numbers are 110, now RBG=4 PRB.By taking sCCE=3PRB as an example, now ERBG=12 PRB.Table 2 is according to the corresponding table of RBG and system bandwidth in the specific embodiment of the invention 2, as shown in table 2：

Table 2

Fig. 4 be met according to the x of the specific embodiment of the invention two for first downstream data channel resource allocation granularity and The schematic diagram of the integral multiple of the minimum common divisor of the frequency domain size of second down control channel resources unit, as depicted in fig. 4-a, SPDCCH uses resource by granularity of sCCE, when sPDSCH uses resource using RBG as granularity, preferable sTTI band bags The ERBG number contained is to gather one of { 4,8 }, i.e. PRB set={ 48,96 }.Now need further to limit type 0/1 Granularity.

As shown in Fig. 4-b, resource, preferable sTTI band are used by granularity of sCCE in sPDCCH and sPDSCH Comprising ERBG number be set one of { 1,2,3,4,5,6,7,8,9 }, i.e. PRB set=12,24,36,48,60,72, 84、96、108}。

Resource allocation information instruction in the DCI carried during now sPDSCH is in sTTI band by sPDCCH.Example Such as, sPDSCH uses resource in sTTI band with x/4 granularity, and x is DL sTTI sizes, now resource allocation information 3bits instructions sPDSCH takes the { whole resources, preceding 1/2 resource, rear 1/2 resource, preceding 1/4 resource, secondary of whole sTTI band Preceding 1/4 resource, secondary rear 1/4 resource, last 1/4 resource }.Such as DL sTTI band are when including 4 ERBG, x/4=1 ERBG =12PRB.

Such as know DL sTTI to the DCI for including instruction DL sTTI band for the present PDCCH region blind checks of UE1 Band regional locations and area size are 4 ERBG.The blind check sPDCCH in first symbol in DL sTTI band, order are examined Astronomical observation selected works position, the DL grant of oneself, wherein resource allocation information 3bit instructions 010 are detected in the 3rd Candidate Set 1/4 frequency domain region receives sPDSCH after representing secondary in DL sTTI band, now because the sPDCCH of reception sCCE exists Before sPDSCH frequency domains, therefore sPDSCH can use the resource in sPDCCH places OFDM symbol corresponding to the frequency domain region. Table 3 is the resource allocation conditions table according to the specific embodiment of the invention two, as shown in table 3：

Table 3

By the scheme of this specific embodiment, by the granularity and DL sTTI of the resource allocation for limiting DL sTTI band The granularity of resource allocation in band, it is descending in system bandwidth can make it that low time delay business efficiently uses with LTE traditional businesses Resource simultaneously avoids the wasting of resources or conflict, while reduces DL sTTI band internal resource assignment overheads, so as to reach low time delay Purpose rationally coexists with LTE traditional businesses in business.

Specific embodiment three

Base station sends the descending control containing DL sTTI band resource allocations in the first physical downlink control channel PDCCH Information processed, and the DL sTTI band using the resource allocation methods of type in LTE system 0/1/2 or other method but make Resource particle degree is the integral multiple of first downstream data channel resource allocation granularity, and wherein first downstream data channel provides Source partition size is PRB or RBG.Base station sequentially sends multiple second Physical Downlink Control Channel sPDCCH in Candidate Set, its The resource allocation information of the second physical down data channel is included in the Downlink Control Information of middle sPDCCH carryings.

Unused portion is available for sPDSCH to use in symbol where sPDCCH in the sTTI of two symbols, i.e., now sPDCCH Resource index is more than the sPDCCH that terminal detects and can be used in its sPDSCH frequency domain in unused portion. Now sTTI band are allocated by granularity of RBG.Now RBG is determines according to system bandwidth, as shown in table 4, with 20MHz Exemplified by system bandwidth, corresponding PRB numbers are 110, now RBG=4 PRB.In addition, now wherein with sCCE=3PRB and it is limited in Exemplified by one OFDM symbol.Table 4 is the corresponding table of the RBG and system bandwidth according to the specific embodiment of the invention three, such as the institute of table 4 Show：

Table 4

Fig. 5 is the x in the specific embodiment of the invention three meets to be first downstream data channel resource allocation granularity The schematic diagram of integral multiple, as shown in Fig. 5-a, resource is used by granularity of sCCE in sPDCCH, sPDSCH is using RBG as granularity During using resource, the RBG number that sTTI band now are included is natural number, no more than 27.Preferable sTTI band bags The RBG number contained is to gather one of { 4,8,12,16,20,24 }, i.e. PRB set={ 16,32,48,64,80,96 }.

Resource allocation information instruction in the DCI carried during now sPDSCH is in sTTI band by sPDCCH.Example Such as, sPDSCH uses resource in sTTI band with x/4 granularity, and x is DL sTTI sizes, now resource allocation information 3bits instructions sPDSCH takes the { whole resources, preceding 1/2 resource, rear 1/2 resource, preceding 1/4 resource, secondary of whole sTTI band Preceding 1/4 resource, secondary rear 1/4 resource, last 1/4 resource }.Such as DL sTTI band are when including 8 RBG, x/4=2 RBG= 8PRB。

Such as know DL sTTI to the DCI for including instruction DL sTTI band for the present PDCCH region blind checks of UE1 Band regional locations and area size are 8 RBG.The blind check sPDCCH in first symbol in DL sTTI band, order are examined Astronomical observation selected works position, the DL grant of oneself, wherein resource allocation information 3bit instructions 100 are detected in the 3rd Candidate Set Represent in DL sTTI band preceding 1/2 frequency domain region reception sPDSCH, now due to reception sPDCCH last SCCE is after sPDSCH frequency domain positions, therefore sPDSCH is without using in OFDM symbol where sPDCCH corresponding to the frequency domain region Resource.Table 5 is the resource allocation conditions table according to the specific embodiment of the invention three, as shown in table 5：

Table 5

As shown in Fig. 5-b, resource is used by granularity of sCCE in sPDCCH, for sPDSCH, in sTTI band Last non-sPDSCH resource allocation using sCCE as granularity, for last sPDSCH resource in sTTI band with PRB/RBG granularities are distributed.The ERBG number that preferable sTTI band are included is one of set { 1,2,3,4,5,6,7,8,9 }, That is PRB set={ 12,24,36,48,60,72,84,96,108 }.

Resource allocation information instruction in the DCI carried during now sPDSCH is in sTTI band by sPDCCH.Example Such as, sPDSCH uses resource in sTTI band with the granularity of Y=4 part resources, and now resource allocation information 3bits is indicated SPDSCH take whole sTTI band whole resources, preceding 1/2 resource, rear 1/2 resource, preceding 1/4 resource, secondary preceding 1/4 resource, 1/4 resource, last 1/4 resource after secondary }.Notice that preceding Y-1=3 parts are equal in now Y=4 parts resource, and be that sCCE is accounted for The integral multiple of frequency domain resource, last a resource may not wait with preceding 3 parts of resources.Concrete operations are：It is assumed that it is The RBG numbers of sTTI band distribution are X, now x=4X PRB, i.e. the sCCE number (non-integer included in sTTI band Do not count) beWherein P is that RBG size, M are sCCE size.Preceding Y-1=3 parts resource is big It is small to beOrFinally a resource size isOrSuch as DL sTTI band are when including 8 RBG, 32 PRB altogether, now in 4 parts of resources First 3 parts of size is 6PRB, and the 4th part of resource is 14PRB.

Or now in Y=4 parts resource preceding Y-1=3 parts are equal, and be PRB integral multiple, last Part resource may not wait with preceding 3 parts of resources.Concrete operations are：It is assumed that be X for the RBG numbers of sTTI band distribution, this When x=PX=4X PRB, wherein P is RBG size.Preceding Y-1=3 parts resource size isFinally a resource size isSuch as DL sTTI band are when including 8 RBG, 32 PRB altogether, now first 3 parts big in 4 parts of resources Small is 8PRB, and the 4th part of resource is 8PRB.Such as DL sTTI band are when including 10 PRB, now first 3 parts in 4 parts of resources Size is 2PRB, and the 4th part of resource is 4PRB.

Or now in Y=4 parts resource preceding Y-1=3 parts are equal, and be PRB integral multiple, last Part resource may not wait with preceding 3 parts of resources.Concrete operations are：It is assumed that be x for the PRB numbers of sTTI band distribution, bag The RBG contained isIndividual, wherein P is RBG size.Preceding Y-1=3 parts resource size isLast a money Source size isSuch as DL sTTI band are when including 8 RBG, 32 PRB altogether, now 4 parts First 3 parts of size is 8PRB in resource, and the 4th part of resource is 8PRB.Such as DL sTTI band are when including 35 PRB, now 4 First 3 parts of size is 8PRB in part resource, and the 4th part of resource is 11PRB.

Such as know DL sTTI to the DCI for including instruction DL sTTI band for the present PDCCH region blind checks of UE1 Band regional locations and area size are 8 RBG.The blind check sPDCCH in first symbol in DL sTTI band, order are examined Astronomical observation selected works position, the DL grant of oneself, wherein resource allocation information 3bit instructions 100 are detected in second Candidate Set Represent in DL sTTI band preceding 1/2 frequency domain region reception sPDSCH, now due to reception sPDCCH last SCCE is last sPDSCH frequency domain positions, therefore sPDSCH is without using OFDM symbol where sPDCCH corresponding to the frequency domain region In resource.Table 6 is second of resource allocation conditions table according to the specific embodiment of the invention three, as shown in table 6：

Table 6

Pass through the scheme of this specific embodiment three, the granularity and DL of the resource allocation by limiting DL sTTI band The granularity of resource allocation in sTTI band, low time delay business can be caused efficiently to be used with LTE traditional businesses in system bandwidth Downlink resource simultaneously avoids the wasting of resources or conflict, while reduces DL sTTI band internal resource assignment overheads, low so as to reach Purpose rationally coexists with LTE traditional businesses in time delay business.

Specific embodiment four

Fig. 6 is according to the schematic diagram of the specific embodiment of the invention four, as shown in fig. 6, being 2 OFDM symbols for sTTI When, now sTTI is divided into sTTI#0-6 in 1 subframe.When PDCCH=1 symbols, first sTTI sPDSCH is dispatched； Second sTTI sPDSCH is dispatched when PDCCH=3 symbols.

When PDCCH=2 symbols, then the sPDSCH in second sTTI is dispatched by PDCCH, i.e., without indicating across sTTI tune Degree, that is, give tacit consent to dispatched when PDCCH is 2 symbol be second sTTI sPDSCH.Scheduling is there may be in second sTTI SPDSCH sPDCCH in second sTTI, i.e. terminal are also required to detect.In addition, dispatching uplink data can be carried in PDCCH Channel sPUSCH uplink authorization.Or

When PDCCH=2 symbols, then the sPDSCH in second sTTI is dispatched by sPDCCH in second sTTI, i.e., it is silent Recognize the sPDSCH for second sTTI that will not be dispatched when PDCCH is 2 symbol.In addition, dispatching uplink number can be carried in PDCCH It is believed that road sPUSCH uplink authorization.Or

When PDCCH=2 symbols, then the sPDSCH in second sTTI is dispatched by PDCCH, i.e., without indicating across sTTI tune Degree, that is, give tacit consent to dispatched when PDCCH is 2 symbol be second sTTI sPDSCH.Without scheduling second in second sTTI SPDSCH sPDCCH in individual sTTI, i.e. terminal need not detect the sPDCCH that sPDSCH is dispatched in second sTTI.In addition, Dispatching uplink data channel sPUSCH uplink authorization can be carried in PDCCH.

By the scheme of this specific embodiment four, when PDCCH is 2 symbol, PDCCH can also carry fast DCI or Single-level DCI dispatch adjacent next sTTI and indicate expense without extra signaling of the increase across TTI scheduling. More resources can be transmitted for sPDSCH when now sPDCCH is not present.

Specific embodiment five

Fig. 7 be according to the schematic diagram of the specific embodiment of the invention five, as shown in fig. 7, for sTTI be 2 OFDM symbols and During the combination of 3 OFDM symbols, now sTTI is divided into sTTI#0-5 in 1 subframe, successively comprising 3,2,2,3,2,2 OFDM symbol.When PDCCH=1 symbols, first sTTI sPDSCH is dispatched；First is dispatched when PDCCH=2 symbols STTI sPDSCH.

When PDCCH=3 symbols, then the sPDSCH in second sTTI is dispatched by PDCCH, i.e., without indicating across sTTI tune Degree, that is, give tacit consent to dispatched when PDCCH is 3 symbol be second sTTI sPDSCH.Scheduling is there may be in second sTTI SPDSCH sPDCCH in second sTTI, i.e. terminal are also required to detect.In addition, dispatching uplink data can be carried in PDCCH Channel sPUSCH uplink authorization.

Or when PDCCH=3 symbols, then the sPDSCH in second sTTI is dispatched by sPDCCH in second sTTI, Give tacit consent to the sPDSCH for second sTTI that will not be dispatched when PDCCH is 3 symbol.In addition, it can be carried in PDCCH in scheduling Row data channel sPUSCH uplink authorization.

Or when PDCCH=3 symbols, then by PDCCH dispatch second sTTI in sPDSCH, i.e., without indicate across STTI dispatch, that is, give tacit consent to dispatched when PDCCH is 3 symbol be second sTTI sPDSCH.Do not adjusted in second sTTI The sPDCCH of sPDSCH in second sTTI is spent, i.e. terminal need not detect the sPDCCH that sPDSCH is dispatched in second sTTI. In addition, dispatching uplink data channel sPUSCH uplink authorization can be carried in PDCCH.

By the scheme of this specific embodiment five, when PDCCH is 3 symbol, PDCCH can also carry fast DCI or Single-level DCI dispatch adjacent next sTTI and indicate expense without extra signaling of the increase across TTI scheduling. More resources can be transmitted for sPDSCH when now sPDCCH is not present.

Compared with correlation technique, in the embodiment of the present invention by the granularity of the resource allocation that limits DL sTTI band and/or The granularity of resource allocation in DL sTTI band, low time delay business can be caused efficiently to use system band with LTE traditional businesses Downlink resource and the wasting of resources or conflict are avoided in width, while reduce DL sTTI band internal resource assignment overheads, so as to reach Purpose rationally coexists to low time delay business and LTE traditional businesses.

Through the above description of the embodiments, those skilled in the art can be understood that according to above-mentioned implementation The method of example can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but a lot In the case of the former be more preferably embodiment.Based on such understanding, technical scheme is substantially in other words to existing The part that technology contributes can be embodied in the form of software product, and the computer software product is stored in a storage In medium (such as ROM/RAM, magnetic disc, CD), including some instructions to cause a station terminal equipment (can be mobile phone, calculate Machine, server, or network equipment etc.) perform method described in each embodiment of the present invention.

Embodiment 2

A kind of determining device of downlink resource granularity is additionally provided in the present embodiment, and the device is used to realize above-mentioned implementation Example and preferred embodiment, repeating no more for explanation was carried out.As used below, term " module " can be realized pre- Determine the combination of the software and/or hardware of function.Although device described by following examples is preferably realized with software, Hardware, or the realization of the combination of software and hardware is also what may and be contemplated.

According to another embodiment of the invention, Fig. 8 is according to the preferred embodiment of the invention is applied under the one kind of base station The determination apparatus structure block diagram of row resource granularity, as shown in figure 8, the device also includes：

Configuration module 82, x Physical Resource Block PRB set is included for configuring, wherein, x PRB set should be included In part or all of resource be used to send the second down control channel and second downstream data channel, wherein, the x is just whole Number；Wherein, the x meets at least one following condition：For the integral multiple of first downstream data channel resource allocation granularity；For second Down control channel resources unit take PRB number M or M/2 orIntegral multiple；Provided for second downstream data channel The integral multiple of source partition size；

Sending module 84, it is connected with the configuration module 82, for being carried by high-level signaling or the first down control channel Physical layer signaling send configuration information for configuring the set；Wherein, frequency domain where first down control channel Frequency domain model where the frequency domain being not only restricted to where x PRB, second down control channel and the second downstream data channel Enclose the frequency domain being limited to where x PRB.

Alternatively, in the case where the first downstream data channel resource allocation granularity is resource block group RBG, the x meets One of following condition：What the first downstream data channel resource allocation granularity and the second down control channel resources unit took PRB number M or M/2 orCommon multiple integral multiple；Or the first downstream data channel resource allocation granularity M or M/2 orTimes, wherein, the M is the PRB numbers that the second down control channel resources unit takes.

Alternatively, the size of Y part resources is one below：

Y-1 part resource sizes areY part resource sizes are

Alternatively, when first down control channel is located at the first two symbol in subframe, in carrying second downstream data During the downstream grants of channel, the second downstream data channel of scheduling is under second in the TTI after the first two symbol in subframe Row data channel.

According to another embodiment of the invention, a kind of determining device of downlink resource granularity is additionally provided, applied to end End, it is characterised in that the device includes：

Receiving module, for receiving the physical layer signaling transmission carried by high-level signaling or the first down control channel For the configuration information of configuration set, the wherein collection is combined into the x Physical Resource Block PRB set of base station distribution, wherein, this is included Part or all of resource in x PRB set is used to send the second down control channel and second downstream data channel, its In, the x is positive integer；Wherein, the x meets at least one following condition：For first downstream data channel resource allocation granularity Integral multiple；For the second down control channel resources unit take PRB number M or M/2 orIntegral multiple；Under second The integral multiple of row data channel resource allocation granularity；Wherein, frequency domain where first down control channel is not only restricted to x Frequency domain where frequency domain where PRB, second down control channel and the second downstream data channel is limited to x Frequency domain where PRB.

Alternatively, the size of Y part resources is one below：

Y-1 part resource sizes areY part resource sizes are

It should be noted that above-mentioned modules can be realized by software or hardware, for the latter, Ke Yitong Cross in the following manner realization, but not limited to this：Above-mentioned module is respectively positioned in same processor；Or above-mentioned modules are with any The form of combination is located in different processors respectively.

Embodiment 3

The base station is the set that terminal configuration includes x Physical Resource Block PRB, wherein, x PRB set should be included In part or all of resource be used to send the second down control channel and second downstream data channel, wherein, the x is just whole Number；

The physical layer signaling that the base station is carried by high-level signaling or the first down control channel is sent to the terminal to be used for Configure the configuration information of the set；

Wherein, the x meets at least one following condition：For the integral multiple of first downstream data channel resource allocation granularity； For the second down control channel resources unit take PRB number M or M/2 orIntegral multiple；For second downstream data The integral multiple of channel resource allocation granularity；

Wherein, frequency domain where first down control channel is not only restricted to the frequency domain where x PRB, and this Frequency domain where two down control channels and the second downstream data channel is limited to the frequency domain where x PRB.

Alternatively, the size of Y part resources is one below：

Y-1 part resource sizes areY part resource sizes are

Embodiment 4

Embodiments of the invention additionally provide a kind of storage medium.Alternatively, in the present embodiment, above-mentioned storage medium can The program code for performing following steps to be arranged to storage to be used for：

S1, base station configuration include x Physical Resource Block PRB set, wherein, the part in x PRB set should be included Or whole resources are used to send the second down control channel and second downstream data channel, wherein, the x is positive integer；Wherein, should X meets at least one following condition：For the integral multiple of first downstream data channel resource allocation granularity；For the second descending control letter PRB number M or M/2 that road resource unit takes orIntegral multiple；For second downstream data channel resource allocation granularity Integral multiple；

S2, the physical layer signaling that the base station is carried by high-level signaling or the first down control channel are sent for configuring this The configuration information of set；Wherein, frequency domain where first down control channel is not only restricted to the frequency domain model where x PRB Enclose, frequency domain where second down control channel and the second downstream data channel is limited to the frequency domain model where x PRB Enclose.

S3, terminal receive the x Physical Resource Block PRB set of distribution, wherein, the part in x PRB set should be included Or whole resources are used to send the second down control channel and second downstream data channel, wherein, the x is positive integer；Wherein, should X meets at least one following condition：For the integral multiple of first downstream data channel resource allocation granularity；For the second descending control letter PRB number M or M/2 that road resource unit takes orIntegral multiple；For second downstream data channel resource allocation granularity Integral multiple；

S4, the terminal receives to be used for by what the physical layer signaling of high-level signaling or the carrying of the first down control channel was sent Configure the configuration information of the set；Wherein, frequency domain where first down control channel is not only restricted to where x PRB Frequency domain where frequency domain, second down control channel and the second downstream data channel is limited to where x PRB Frequency domain.

Alternatively, in the present embodiment, above-mentioned storage medium can include but is not limited to：USB flash disk, read-only storage (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disc or CD etc. is various can be with the medium of store program codes.

Alternatively, in the present embodiment, processor performs above-mentioned implementation according to the program code stored in storage medium Method and step in example.

Alternatively, the specific example in the present embodiment may be referred to described in above-described embodiment and optional embodiment Example, the present embodiment will not be repeated here.

Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and formed Network on, alternatively, they can be realized with the program code that computing device can perform, it is thus possible to they are stored Performed in the storage device by computing device, and in some cases, can be with different from shown in order execution herein The step of going out or describing, they are either fabricated to each integrated circuit modules respectively or by multiple modules in them or Step is fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware and software combination.

The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies Change, equivalent substitution, improvement etc., should be included in the scope of the protection.

Claims

A kind of 1. determination method of downlink resource granularity, it is characterised in that：

Base station configuration includes x Physical Resource Block PRB set, wherein, the part or complete in the set comprising x PRB Portion's resource is used to send the second down control channel and second downstream data channel, wherein, the x is positive integer；

The physical layer signaling that the base station is carried by high-level signaling or the first down control channel is sent for configuring the collection The configuration information of conjunction；

Wherein, the x meets at least one following condition：For the integral multiple of first downstream data channel resource allocation granularity；For Second down control channel resources unit take PRB number M or M/2 orIntegral multiple；For second downstream data channel The integral multiple of resource allocation granularity；

Wherein, frequency domain where first down control channel is not only restricted to the frequency domain where x PRB, and described the Frequency domain where two down control channels and the second downstream data channel is limited to the frequency domain where x PRB.
2. according to the method for claim 1, it is characterised in that the x takes for the second down control channel resources unit PRB number M or M/2 orIntegral multiple, including：The x is the occupancy of the second down control channel resources unit PRB number M or M/2 orC times, wherein, the C is integer more than or equal to 0.
3. according to the method for claim 2, it is characterised in that the resource allocation granularity of the second downstream data channel is One below：

PRB number M or M/2 that the second down control channel resources unit takes orIndividual PRB；One PRB；X/4 PRB；X/8 PRB.
4. according to the method for claim 1, it is characterised in that the x meets following condition simultaneously：

For the integral multiple of the first downstream data channel resource allocation granularity, the second down control channel resources unit accounts for The integral multiple of PRB numbers.
5. according to the method for claim 4, it is characterised in that be in the first downstream data channel resource allocation granularity In the case of resource block group RBG, the x meets one of following condition：

The PRB numbers that the first downstream data channel resource allocation granularity and the second down control channel resources unit take Mesh M or M/2 orCommon multiple integral multiple；

Or the first downstream data channel resource allocation granularity M or M/2 orTimes, wherein, the M is described the The PRB numbers that two down control channel resources units take.
6. according to the method for claim 4, it is characterised in that the resource allocation granularity of the second downstream data channel is One below：RBG；PRB number M or M/2 that the second down control channel resources unit takes orIndividual PRB；One Individual PRB；X/4 PRB；X/8 PRB.
7. according to the method for claim 1, it is characterised in that meet in the x for first downstream data channel resource point In the case of integral multiple with granularity, the first downstream data channel resource allocation granularity is PRB or RBG, and the x is described C times of first downstream data channel resource allocation granularity, wherein, the C is the integer more than or equal to 0.
8. according to the method for claim 7, it is characterised in that the resource allocation granularity of the second downstream data channel is expired It is enough one of lower condition：RBG；Second down control channel resources unit take PRB number M or M/2 orIndividual PRB；One Individual PRB；X/4 PRB；X/8 PRB；1 part in Y part resources, the resource of the second downstream data channel is at most divided into Y Part, wherein, Y-1 part resource sizes are identical, and Y is positive integer.
9. according to the method for claim 8, it is characterised in that the size of Y parts resource is one below：

Y-1 part resource sizes areY part resource sizes are

Y-1 part resource sizes areY part resource sizes areWherein P is RBG Comprising PRB numbers；

Y-1 part resource sizes areY part resource sizes areWherein Q be M or M/2 orM is the PRB numbers that sCCE takes.
10. according to the method described in claim 8, it is characterised in that the resource allocation grain of the second downstream data channel Spend for x/4 or x/8 or at most distribution Y part resources when, including one below：

3bits is used to indicate the following information in most 4 parts of resources in the second down control channel：{ whole resources, preceding 1/2 The resource, rear 1/2 resource, preceding 1/4 resource, secondary preceding 1/4 resource, secondary rear 1/4 resource, last 1/4 resource of part }；

4bits is used to indicate the following information in most 8 parts of resources in the second down control channel：{ whole resources, preceding 1/2 Resource, rear 1/2 resource, preceding 1/4 resource, secondary preceding 1/4 resource, it is secondary after 1/4 resource, last 1/4 resource, first Part 1/8 resource, second part 1/8 of resource, the 3rd part 1/8 of resource, the 4th part 1/8 of resource, the 5th part 1/8 of resource, 6th part 1/8 of resource, the 7th part 1/8 of resource, the 8th part 1/8 of resource }.
11. the method according to any one of claim 3 or 6, it is characterised in that the money of the second downstream data channel When source partition size is x/4 PRB or x/8 PRB, including one below：

3bits is used to indicate the following information in most 4 parts of resources in the second down control channel：{ whole resources, preceding 1/2 The resource, rear 1/2 resource, preceding 1/4 resource, secondary preceding 1/4 resource, secondary rear 1/4 resource, last 1/4 resource of part }；

4bits is used to indicate the following information in most 8 parts of resources in the second down control channel：{ whole resources, preceding 1/2 Resource, rear 1/2 resource, preceding 1/4 resource, secondary preceding 1/4 resource, it is secondary after 1/4 resource, last 1/4 resource, first Part 1/8 resource, second part 1/8 of resource, the 3rd part 1/8 of resource, the 4th part 1/8 of resource, the 5th part 1/8 of resource, 6th part 1/8 of resource, the 7th part 1/8 of resource, the 8th part 1/8 of resource }.
12. according to the method for claim 1, it is characterised in that before first down control channel is located in subframe When two symbols or first three symbol, the Downlink Control Information of carrying includes：

The uplink authorization of dispatching uplink data channel；Or

The uplink authorization of dispatching uplink data channel, the downstream grants of second downstream data channel.
13. according to the method for claim 12, it is characterised in that the Downlink Control Information of the carrying is under scheduling second During the downstream grants of row data channel, the second downstream data channel of scheduling be in subframe the first two symbol or first three symbol it The second downstream data channel in first TTI afterwards.
14. a kind of downlink resource fixs the determination method of row resource granularity really, it is characterised in that：

Terminal receives the x Physical Resource Block PRB set of distribution, wherein, the part or complete in the set comprising x PRB Portion's resource is used to send the second down control channel and second downstream data channel, wherein, the x is positive integer；

The terminal receives to be used to configure by what the physical layer signaling of high-level signaling or the carrying of the first down control channel was sent The configuration information of the set；

Wherein, the x meets at least one following condition：For the integral multiple of first downstream data channel resource allocation granularity；For Second down control channel resources unit take PRB number M or M/2 orIntegral multiple；Believe for second downstream data The integral multiple of road resource allocation granularity；

Wherein, frequency domain where first down control channel is not only restricted to the frequency domain where x PRB, and described the Frequency domain where two down control channels and the second downstream data channel is limited to the frequency domain where x PRB.
15. according to the method for claim 14, it is characterised in that the x is that the second down control channel resources unit accounts for PRB number M or M/2 orIntegral multiple, including：The x is the occupancy of the second down control channel resources unit PRB number M or M/2 orC times, wherein, the C is integer more than or equal to 0.
16. according to the method for claim 14, it is characterised in that the resource allocation granularity of the second downstream data channel For one below：

PRB number M or M/2 that the second down control channel resources unit takes orIndividual PRB；One PRB；X/4 PRB；X/8 PRB.
17. according to the method for claim 14, it is characterised in that the x meets following condition simultaneously：Under described first The integral multiple of row data channel resource allocation granularity, the PRB numbers that the second down control channel resources unit takes it is whole Several times.
18. according to the method for claim 17, it is characterised in that in the first downstream data channel resource allocation granularity In the case of for resource block group RBG, the x meets one of following condition：

The PRB numbers that the first downstream data channel resource allocation granularity and the second down control channel resources unit take Mesh M or M/2 orCommon multiple integral multiple；

Or the first downstream data channel resource allocation granularity M or M/2 orTimes, wherein, the M is described the The PRB numbers that two down control channel resources units take.
19. according to the method for claim 17, it is characterised in that the resource allocation granularity of the second downstream data channel For one below：RBG；PRB number M or M/2 that the second down control channel resources unit takes orIndividual PRB； One PRB；X/4 PRB；X/8 PRB.
20. according to the method for claim 14, it is characterised in that meet to be first downstream data channel resource in the x In the case of the integral multiple of partition size, the first downstream data channel resource allocation granularity is PRB or RBG, and the x is institute State first downstream data channel resource allocation granularity C times, wherein, the C is the integer more than or equal to 0.
21. the method according to right wants 20, it is characterised in that the resource allocation granularity of the second downstream data channel is expired It is enough one of lower condition：RBG；Second down control channel resources unit take PRB number M or M/2 orIndividual PRB； One PRB；X/4 PRB；X/8 PRB；1 part in Y part resources, the resource of the second downstream data channel is at most divided into Y parts, wherein, Y-1 part resource sizes are identical, and Y is positive integer.
22. according to the method for claim 21, it is characterised in that the size of Y parts resource is one below：

Y-1 part resource sizes areY part resource sizes are

Y-1 part resource sizes areY part resource sizes areWherein P is RBG Comprising PRB numbers；

Y-1 part resource sizes areY part resource sizes areWherein Q be M or M/2 orM is the PRB numbers that sCCE takes.
23. according to the method described in claim 21, it is characterised in that the resource allocation grain of the second downstream data channel Spend for x/4 or x/8 or at most distribution Y part resources when, including one below：

3bits is used to indicate the following information in most 4 parts of resources in the second down control channel：{ whole resources, preceding 1/2 The resource, rear 1/2 resource, preceding 1/4 resource, secondary preceding 1/4 resource, secondary rear 1/4 resource, last 1/4 resource of part }；

4bits is used to indicate the following information in most 8 parts of resources in the second down control channel：{ whole resources, preceding 1/2 Resource, rear 1/2 resource, preceding 1/4 resource, secondary preceding 1/4 resource, it is secondary after 1/4 resource, last 1/4 resource, first Part 1/8 resource, second part 1/8 of resource, the 3rd part 1/8 of resource, the 4th part 1/8 of resource, the 5th part 1/8 of resource, 6th part 1/8 of resource, the 7th part 1/8 of resource, the 8th part 1/8 of resource }.
24. the method according to any one of claim 16 or 19, it is characterised in that the second downstream data channel When resource allocation granularity is x/4 PRB or x/8 PRB, including one below：

3bits is used to indicate the following information in most 4 parts of resources in the second down control channel：{ whole resources, preceding 1/2 The resource, rear 1/2 resource, preceding 1/4 resource, secondary preceding 1/4 resource, secondary rear 1/4 resource, last 1/4 resource of part }；

4bits is used to indicate the following information in most 8 parts of resources in the second down control channel：{ whole resources, preceding 1/2 Resource, rear 1/2 resource, preceding 1/4 resource, secondary preceding 1/4 resource, it is secondary after 1/4 resource, last 1/4 resource, first Part 1/8 resource, second part 1/8 of resource, the 3rd part 1/8 of resource, the 4th part 1/8 of resource, the 5th part 1/8 of resource, 6th part 1/8 of resource, the 7th part 1/8 of resource, the 8th part 1/8 of resource }.
25. according to the method for claim 14, it is characterised in that before first down control channel is located in subframe When two symbols or first three symbol, the Downlink Control Information of carrying includes：

The uplink authorization of dispatching uplink data channel；Or

Dispatch the uplink authorization of the uplink data channels, the downstream grants of second downstream data channel.
26. according to the method for claim 25, it is characterised in that terminal when receiving Downlink Control Information, including：

The first two in the uplink authorization for dispatching the uplink data channels, subframe is received in first down control channel to accord with Number or first three symbol after first TTI at least one of downstream grants of second downstream data channel, Yi Ji Described second dispatched in the TTI is received in first TTI in the subframe after the first two symbol or first three symbol The downstream grants of downstream data channel.
27. according to the method for claim 25, it is characterised in that the terminal when receiving the Downlink Control Information, Including：The uplink authorization of dispatching uplink data channel, undesirable reception scheduling sublayer are received in first down control channel The downstream grants of the second downstream data channel in first TTI in frame after the first two symbol or first three symbol, and Received in first TTI in the subframe after the first two symbol or first three symbol under second dispatched in the TTI The downstream grants of row data channel.
28. according to the method for claim 25, it is characterised in that the terminal when receiving the Downlink Control Information, Received in first down control channel in the uplink authorization of dispatching uplink data channel, subframe the first two symbol or first three At least one of downstream grants of second downstream data channel in first TTI after individual symbol, and in the subframe Do not expect to receive the second time line number dispatched in the TTI in first TTI after middle the first two symbol or first three symbol It is believed that the downstream grants in road.
A kind of 29. determining device of downlink resource granularity, applied to base station, it is characterised in that described device also includes：

Configuration module, x Physical Resource Block PRB set is included for configuring, wherein, in the set comprising x PRB Part or all of resource is used to send the second down control channel and second downstream data channel, wherein, the x is positive integer；

Wherein, the x meets at least one following condition：For the integral multiple of first downstream data channel resource allocation granularity；For Second down control channel resources unit take PRB number M or M/2 orIntegral multiple；Believe for second downstream data The integral multiple of road resource allocation granularity；

Sending module, the physical layer signaling for being carried by high-level signaling or the first down control channel are sent for configuring institute State the configuration information of set；

Wherein, frequency domain where first down control channel is not only restricted to the frequency domain where x PRB, and described the Frequency domain where two down control channels and the second downstream data channel is limited to the frequency domain where x PRB.
30. device according to claim 29, it is characterised in that the x is that the second down control channel resources unit accounts for PRB number M or M/2 orIntegral multiple, including：The x is the occupancy of the second down control channel resources unit PRB number M or M/2 orC times, wherein, the C is integer more than or equal to 0.
31. device according to claim 29, it is characterised in that the x meets following condition simultaneously：

For the integral multiple of the first downstream data channel resource allocation granularity, the second down control channel resources unit accounts for The integral multiple of PRB numbers.
32. device according to claim 29, it is characterised in that meet to be first downstream data channel resource in the x In the case of the integral multiple of partition size, the first downstream data channel resource allocation granularity is PRB or RBG, and the x is institute State first downstream data channel resource allocation granularity C times, wherein, the C is the integer more than or equal to 0.
A kind of 33. determining device of downlink resource granularity, applied to terminal, it is characterised in that described device includes：

Receiving module, for receiving being used for for the physical layer signaling transmission carried by high-level signaling or the first down control channel The configuration information of configuration set, wherein x Physical Resource Block PRB set of the set for base station distribution, wherein, it is described to include Part or all of resource in x PRB set is used to send the second down control channel and second downstream data channel, its In, the x is positive integer；

Wherein, the x meets at least one following condition：For the integral multiple of first downstream data channel resource allocation granularity；For Second down control channel resources unit take PRB number M or M/2 orIntegral multiple；For second downstream data channel The integral multiple of resource allocation granularity；

Wherein, frequency domain where first down control channel is not only restricted to the frequency domain where x PRB, and described the Frequency domain where two down control channels and the second downstream data channel is limited to the frequency domain where x PRB.
34. device according to claim 33, it is characterised in that the x is that the second down control channel resources unit accounts for PRB number M or M/2 orIntegral multiple, including：The x is the occupancy of the second down control channel resources unit PRB number M or M/2 orC times, wherein, the C is integer more than or equal to 0.
35. device according to claim 33, it is characterised in that the x meets following condition simultaneously：

For the integral multiple of the first downstream data channel resource allocation granularity, the second down control channel resources unit accounts for The integral multiple of PRB numbers.
36. device according to claim 33, it is characterised in that meet to be first downstream data channel resource in the x In the case of the integral multiple of partition size, the first downstream data channel resource allocation granularity is PRB or RBG, and the x is institute State first downstream data channel resource allocation granularity C times, wherein, the C is the integer more than or equal to 0.
37. a kind of determination system of downlink resource granularity, it is characterised in that the system includes：Base station, terminal；

The base station is the set that terminal configuration includes x Physical Resource Block PRB, wherein, the collection for including x PRB Part or all of resource in conjunction is used to send the second down control channel and second downstream data channel, wherein, the x is just Integer；

The physical layer signaling that the base station is carried by high-level signaling or the first down control channel is sent to the terminal to be used for Configure the configuration information of the set；

Wherein, the x meets at least one following condition：For the integral multiple of first downstream data channel resource allocation granularity；For Second down control channel resources unit take PRB number M or M/2 orIntegral multiple；For second downstream data channel The integral multiple of resource allocation granularity；

Wherein, frequency domain where first down control channel is not only restricted to the frequency domain where x PRB, and described the Frequency domain where two down control channels and the second downstream data channel is limited to the frequency domain where x PRB.
38. the system according to claim 37, it is characterised in that the x is that the second down control channel resources unit accounts for PRB number M or M/2 orIntegral multiple, including：The x is the occupancy of the second down control channel resources unit PRB number M or M/2 orC times, wherein, the C is integer more than or equal to 0.
39. the system according to claim 37, it is characterised in that the x meets following condition simultaneously：

For the integral multiple of the first downstream data channel resource allocation granularity, the second down control channel resources unit accounts for The integral multiple of PRB numbers.
40. the system according to claim 37, it is characterised in that meet to be first downstream data channel resource in the x In the case of the integral multiple of partition size, the first downstream data channel resource allocation granularity is PRB or RBG, and the x is institute State first downstream data channel resource allocation granularity C times, wherein, the C is the integer more than or equal to 0.