CN105246164A - Data transmission method and data transmission device for ultra-dense network - Google Patents
Data transmission method and data transmission device for ultra-dense network Download PDFInfo
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- CN105246164A CN105246164A CN201510711883.1A CN201510711883A CN105246164A CN 105246164 A CN105246164 A CN 105246164A CN 201510711883 A CN201510711883 A CN 201510711883A CN 105246164 A CN105246164 A CN 105246164A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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Abstract
The invention provides a data transmission method and a data transmission device for an ultra-dense network. The data transmission method for the ultra-dense network is suitable for a base station. The method comprises the following steps: determining downlink scheduling information of a target terminal within a specified TTI (Transmission Time Interval) time; transmitting downlink control information including the downlink scheduling information to the target terminal within the specified TTI time in order that the target terminal receives and demodulates downlink data transmitted by the base station according to the downlink scheduling information within the specified TTI time and within a predetermined quantity of TTI times after the specified TTI time; and if the downlink control information needs to be transmitted to the target terminal within the predetermined quantity of TTI times after the specified TTI time, transmitting downlink control information not including the downlink scheduling information to the target terminal. Through the technical scheme of the invention, the signaling overhead of the downlink control information can be reduced effectively, so that resources for transmitting data information are increased correspondingly, and the data transmission efficiency is increased.
Description
Technical field
The present invention relates to communication technical field, in particular to a kind of data transmission method for super-intensive network and a kind of data transmission device for super-intensive network.
Background technology
At present, the 5th Generation Mobile Communication System (5G) is just among the research of academia and industrial circle, and wherein, UDN (Ultra-DenseNetwork, super-intensive network) is an important technology of 5G.UDN refers to when network design, the scene (such as stadium, railway station Waiting Lounge, office space etc.) large for some demand data amount, data cube computation number is many, carry out the networking of super-intensive, the interval between access website may only have tens of rice.UDN networking relies on the cooperation of access website, method such as interference eliminations etc. to provide higher data rate and more data cube computation for user.
Current in 4G network, when downlink data transmission is carried out in base station, mainly send data by the mode of dynamic dispatching, namely at each TTI (TransmissionTimeInterval, Transmission Time Interval) re-start scheduling, be calculated as each UE (UserEquipment, subscriber equipment) resource of distributing (comprises carrier identification, Resourse Distribute head, RB (ResourceBlock, Resource Block) distribute), MCS (the ModulationandCodingScheme of data, modulation coding mode) etc. control information, and by these DCI (DownlinkControlInformation, Downlink Control Information) send to UE by different DCIformat (descending control information format), wherein, send in the DCI of UE and not merely comprise above-mentioned control information, also comprise other information, such as uplink power control information, the information etc. relevant to HARQ feedback.UE, after receiving DCI, first demodulates the DCI that base station sends, is indicated to the RB position of specifying then according to DCI, adopts the MCS etc. specified that base station is sent to the data demodulates of UE out.
The mode of above-mentioned 4G network design dynamic dispatching is the dynamic characteristic in order to better adaptive channel, to adopt the modulation coding method and user resources distribution that more mate with channel situation, but there is the control information corresponding to this TTI at each TTI, control information for each user can reach tens of bits, if directly the mode of this dynamic dispatching is applied to UDN, then can increase the expense of Downlink Control Information, thus cause the data transmission efficiency of UDN on the low side, and for this problem, also there is no effective solution at present.
Therefore, how can reduce the signaling consumption of Downlink Control Information, the data transmission efficiency improving super-intensive network becomes technical problem urgently to be resolved hurrily.
Summary of the invention
The present invention just based on above-mentioned technical problem one of at least, propose a kind of data transmission scheme for super-intensive network newly, effectively can reduce the signaling consumption of Downlink Control Information, thus correspondingly increase the resource of transmitting data information, improve the efficiency of transmission of data.
In view of this, the present invention proposes a kind of data transmission method for super-intensive network, be applicable to base station, comprise: within the appointment TTI time, determine the down dispatch information to target terminal; Within the described appointment TTI time, the Downlink Control Information comprising described down dispatch information is sent to described target terminal, to make described target terminal within the described appointment TTI time, and after the described appointment TTI time in the predetermined quantity TTI time, according to described down dispatch information, the downlink data that described base station sends is received and demodulated; In the predetermined quantity TTI time after the described appointment TTI time, if desired send Downlink Control Information to described target terminal, then send the Downlink Control Information not comprising described down dispatch information to described target terminal.
In this technical scheme, consider that UDN scene mostly is the static scene of standard (in such as Office Area, access point is generally densely deployed in the positions such as ceiling, in access point to office, the wireless channel of terminal room can be considered as accurate static, namely wireless channel along with the change of time comparatively slow), and the number of users accessing each UDN community is generally less, so by within the appointment TTI time, determine the down dispatch information to target terminal, and the Downlink Control Information comprising down dispatch information is sent to target terminal, and specifying in the predetermined quantity TTI time after the TTI time, the Downlink Control Information not comprising down dispatch information is sent to target terminal, make on the one hand target terminal can within this appointment TTI time and in the follow-up predetermined quantity TTI time, down dispatch information according to receiving within this appointment TTI time receives and demodulates downlink data, it also avoid on the other hand that base station in correlation technique all needs to send corresponding down dispatch information within each TTI time and the situation that increases Downlink Control Information expense occurs, effectively reduce the resource that down dispatch information takies, reduce the signaling consumption of Downlink Control Information, thus correspondingly increase the resource of transmitting data information, improve the efficiency of transmission of data.
In technique scheme, preferably, also comprise: the value obtaining predefined described predetermined quantity; Or the value of described predetermined quantity is set according to the time variation of the wireless channel of described super-intensive network, wherein, the value of described predetermined quantity becomes inverse correlation relation with the time variation of the wireless channel of described super-intensive network.
In this technical scheme, the value of predetermined quantity can be standard agreement regulation, and can also arrange according to the time variation of the wireless channel of super-intensive network, particularly, the time variation of wireless channel is lower, and the value of predetermined quantity is larger; On the contrary, the time variation of wireless channel is higher, and the value of predetermined quantity is less.
In above-mentioned any one technical scheme, preferably, described down dispatch information comprises: described base station sends the carrier information and resource block information that described downlink data uses, and the MCS information that described base station is modulated described downlink data and encoded.
In above-mentioned any one technical scheme, preferably, also comprise: configure the value of described predetermined quantity by high-level signaling or physical layer signaling to described target terminal.
According to a second aspect of the invention, also proposed a kind of data transmission method for super-intensive network, be applicable to terminal, comprise: receive the Downlink Control Information including down dispatch information that base station sends within the appointment TTI time; Within the described appointment TTI time, and after the described appointment TTI time in the predetermined quantity TTI time, according to described down dispatch information, the downlink data that described base station sends is received and demodulated.
In this technical scheme, by receiving the Downlink Control Information including down dispatch information that base station sends within the appointment TTI time, and within the appointment TTI time, and after the appointment TTI time in the predetermined quantity TTI time, down dispatch information according to receiving within this appointment TTI time receives and demodulates the downlink data that base station sends, avoid the down dispatch information that terminal in correlation technique needs reception base station to send within each TTI time, and need the problem of according to the down dispatch information received within each TTI time, data being carried out to receiving demodulation, make base station need not send down dispatch information within each TTI time, effectively reduce the resource that down dispatch information takies, reduce the signaling consumption of Downlink Control Information, thus correspondingly increase the resource of transmitting data information, improve the efficiency of transmission of data.
In technique scheme, preferably, also comprise: the value obtaining predefined described predetermined quantity; Or receive the value of the described predetermined quantity that described base station is configured by high-level signaling or physical layer signaling.
In this technical scheme, for the value of predetermined quantity, terminal can obtain the predefined value specified in standard agreement, or receives the value of base station configuration.
According to a third aspect of the invention we, also proposed a kind of data transmission device for super-intensive network, be applicable to base station, comprise: determining unit, within the appointment TTI time, determine the down dispatch information to target terminal, transmitting element, be connected to described determining unit, for within the described appointment TTI time, the Downlink Control Information comprising described down dispatch information is sent to described target terminal, to make described target terminal within the described appointment TTI time, and after the described appointment TTI time in the predetermined quantity TTI time, according to described down dispatch information, the downlink data that described base station sends is received and demodulated, and in the predetermined quantity TTI time after the described appointment TTI time, if desired Downlink Control Information is sent to described target terminal, the Downlink Control Information not comprising described down dispatch information is then sent to described target terminal.
In this technical scheme, consider that UDN scene mostly is the static scene of standard (in such as Office Area, access point is generally densely deployed in the positions such as ceiling, in access point to office, the wireless channel of terminal room can be considered as accurate static, namely wireless channel along with the change of time comparatively slow), and the number of users accessing each UDN community is generally less, so by within the appointment TTI time, determine the down dispatch information to target terminal, and the Downlink Control Information comprising down dispatch information is sent to target terminal, and specifying in the predetermined quantity TTI time after the TTI time, the Downlink Control Information not comprising down dispatch information is sent to target terminal, make on the one hand target terminal can within this appointment TTI time and in the follow-up predetermined quantity TTI time, down dispatch information according to receiving within this appointment TTI time receives and demodulates downlink data, it also avoid on the other hand that base station in correlation technique all needs to send corresponding down dispatch information within each TTI time and the situation that increases Downlink Control Information expense occurs, effectively reduce the resource that down dispatch information takies, reduce the signaling consumption of Downlink Control Information, thus correspondingly increase the resource of transmitting data information, improve the efficiency of transmission of data.
In technique scheme, preferably, also comprise: acquiring unit, be connected to described transmitting element, for obtaining the value of predefined described predetermined quantity, and be sent to described transmitting element, or setting unit, be connected to described transmitting element, time variation for the wireless channel according to described super-intensive network arranges the value of described predetermined quantity, and be sent to described transmitting element, wherein, the value of described predetermined quantity becomes inverse correlation relation with the time variation of the wireless channel of described super-intensive network.
In this technical scheme, the value of predetermined quantity can be standard agreement regulation, and can also arrange according to the time variation of the wireless channel of super-intensive network, particularly, the time variation of wireless channel is lower, and the value of predetermined quantity is larger; On the contrary, the time variation of wireless channel is higher, and the value of predetermined quantity is less.
In above-mentioned any one technical scheme, preferably, described down dispatch information comprises: described base station sends the carrier information and resource block information that described downlink data uses, and the MCS information that described base station is modulated described downlink data and encoded.
In above-mentioned any one technical scheme, preferably, also comprise: dispensing unit, for configuring the value of described predetermined quantity by high-level signaling or physical layer signaling to described target terminal.
According to a forth aspect of the invention, also proposed a kind of data transmission device for super-intensive network, be applicable to terminal, comprise: the first receiving element, for receiving the Downlink Control Information including down dispatch information that base station sends within the appointment TTI time; Processing unit, is connected to described first receiving element, within the described appointment TTI time, and after the described appointment TTI time in the predetermined quantity TTI time, receives and demodulates the downlink data that described base station sends according to described down dispatch information.
In this technical scheme, by receiving the Downlink Control Information including down dispatch information that base station sends within the appointment TTI time, and within the appointment TTI time, and after the appointment TTI time in the predetermined quantity TTI time, down dispatch information according to receiving within this appointment TTI time receives and demodulates the downlink data that base station sends, avoid the down dispatch information that terminal in correlation technique needs reception base station to send within each TTI time, and need the problem of according to the down dispatch information received within each TTI time, data being carried out to receiving demodulation, make base station need not send down dispatch information within each TTI time, effectively reduce the resource that down dispatch information takies, reduce the signaling consumption of Downlink Control Information, thus correspondingly increase the resource of transmitting data information, improve the efficiency of transmission of data.
In technique scheme, preferably, also comprising: acquiring unit, be connected to described processing unit, for obtaining the value of predefined described predetermined quantity, and being sent to described processing unit; Or second receiving element, being connected to described processing unit, for receiving the value of described base station by the described predetermined quantity of high-level signaling or physical layer signaling configuration, and being sent to described processing unit.
In this technical scheme, for the value of predetermined quantity, terminal can obtain the predefined value specified in standard agreement, or receives the value of base station configuration.
By above technical scheme, effectively can reduce the signaling consumption of Downlink Control Information, thus correspondingly increase the resource of transmitting data information, improve the efficiency of transmission of data.
Accompanying drawing explanation
Fig. 1 shows the schematic flow diagram of the data transmission method for super-intensive network according to an embodiment of the invention;
Fig. 2 shows the schematic flow diagram of the data transmission method for super-intensive network according to another embodiment of the invention;
Fig. 3 shows the schematic block diagram of the data transmission device for super-intensive network according to an embodiment of the invention;
Fig. 4 shows the schematic block diagram of the data transmission device for super-intensive network according to another embodiment of the invention;
Fig. 5 shows the schematic block diagram of base station according to an embodiment of the invention;
Fig. 6 shows the schematic block diagram of terminal according to an embodiment of the invention.
Embodiment
In order to more clearly understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not by the restriction of following public specific embodiment.
Fig. 1 shows the schematic flow diagram of the data transmission method for super-intensive network according to an embodiment of the invention.
As shown in Figure 1, the data transmission method for super-intensive network according to an embodiment of the invention, is applicable to base station, comprises:
Step 102, within the appointment TTI time, determines the down dispatch information to target terminal;
Step 104, within the described appointment TTI time, the Downlink Control Information comprising described down dispatch information is sent to described target terminal, to make described target terminal within the described appointment TTI time, and after the described appointment TTI time in the predetermined quantity TTI time, according to described down dispatch information, the downlink data that described base station sends is received and demodulated;
Step 106, in the predetermined quantity TTI time after the described appointment TTI time, if desired sends Downlink Control Information to described target terminal, then sends the Downlink Control Information not comprising described down dispatch information to described target terminal.
In this technical scheme, consider that UDN scene mostly is the static scene of standard (in such as Office Area, access point is generally densely deployed in the positions such as ceiling, in access point to office, the wireless channel of terminal room can be considered as accurate static, namely wireless channel along with the change of time comparatively slow), and the number of users accessing each UDN community is generally less, so by within the appointment TTI time, determine the down dispatch information to target terminal, and the Downlink Control Information comprising down dispatch information is sent to target terminal, and specifying in the predetermined quantity TTI time after the TTI time, the Downlink Control Information not comprising down dispatch information is sent to target terminal, make on the one hand target terminal can within this appointment TTI time and in the follow-up predetermined quantity TTI time, down dispatch information according to receiving within this appointment TTI time receives and demodulates downlink data, it also avoid on the other hand that base station in correlation technique all needs to send corresponding down dispatch information within each TTI time and the situation that increases Downlink Control Information expense occurs, effectively reduce the resource that down dispatch information takies, reduce the signaling consumption of Downlink Control Information, thus correspondingly increase the resource of transmitting data information, improve the efficiency of transmission of data.
In technique scheme, preferably, also comprise: the value obtaining predefined described predetermined quantity; Or the value of described predetermined quantity is set according to the time variation of the wireless channel of described super-intensive network, wherein, the value of described predetermined quantity becomes inverse correlation relation with the time variation of the wireless channel of described super-intensive network.
In this technical scheme, the value of predetermined quantity can be standard agreement regulation, and can also arrange according to the time variation of the wireless channel of super-intensive network, particularly, the time variation of wireless channel is lower, and the value of predetermined quantity is larger; On the contrary, the time variation of wireless channel is higher, and the value of predetermined quantity is less.
In above-mentioned any one technical scheme, preferably, described down dispatch information comprises: described base station sends the carrier information and resource block information that described downlink data uses, and the MCS information that described base station is modulated described downlink data and encoded.
In above-mentioned any one technical scheme, preferably, also comprise: configure the value of described predetermined quantity by high-level signaling or physical layer signaling to described target terminal.
Fig. 2 shows the schematic flow diagram of the data transmission method for super-intensive network according to another embodiment of the invention.
As shown in Figure 2, the data transmission method for super-intensive network according to another embodiment of the invention, is applicable to terminal, comprises:
Step 202, receives the Downlink Control Information including down dispatch information that base station sends within the appointment TTI time;
Step 204, within the described appointment TTI time, and after the described appointment TTI time in the predetermined quantity TTI time, receives and demodulates the downlink data that described base station sends according to described down dispatch information.
In this technical scheme, by receiving the Downlink Control Information including down dispatch information that base station sends within the appointment TTI time, and within the appointment TTI time, and after the appointment TTI time in the predetermined quantity TTI time, down dispatch information according to receiving within this appointment TTI time receives and demodulates the downlink data that base station sends, avoid the down dispatch information that terminal in correlation technique needs reception base station to send within each TTI time, and need the problem of according to the down dispatch information received within each TTI time, data being carried out to receiving demodulation, make base station need not send down dispatch information within each TTI time, effectively reduce the resource that down dispatch information takies, reduce the signaling consumption of Downlink Control Information, thus correspondingly increase the resource of transmitting data information, improve the efficiency of transmission of data.
In technique scheme, preferably, also comprise: the value obtaining predefined described predetermined quantity; Or receive the value of the described predetermined quantity that described base station is configured by high-level signaling or physical layer signaling.
In this technical scheme, for the value of predetermined quantity, terminal can obtain the predefined value specified in standard agreement, or receives the value of base station configuration.
Fig. 3 shows the schematic block diagram of the data transmission device for super-intensive network according to an embodiment of the invention.
As shown in Figure 3, the data transmission device 300 for super-intensive network according to an embodiment of the invention, is applicable to base station, comprises: determining unit 302 and transmitting element 304.
Wherein, determining unit 302, within the appointment TTI time, determines the down dispatch information to target terminal, transmitting element 304, be connected to described determining unit 302, for within the described appointment TTI time, the Downlink Control Information comprising described down dispatch information is sent to described target terminal, to make described target terminal within the described appointment TTI time, and after the described appointment TTI time in the predetermined quantity TTI time, according to described down dispatch information, the downlink data that described base station sends is received and demodulated, and in the predetermined quantity TTI time after the described appointment TTI time, if desired Downlink Control Information is sent to described target terminal, the Downlink Control Information not comprising described down dispatch information is then sent to described target terminal.
In this technical scheme, consider that UDN scene mostly is the static scene of standard (in such as Office Area, access point is generally densely deployed in the positions such as ceiling, in access point to office, the wireless channel of terminal room can be considered as accurate static, namely wireless channel along with the change of time comparatively slow), and the number of users accessing each UDN community is generally less, so by within the appointment TTI time, determine the down dispatch information to target terminal, and the Downlink Control Information comprising down dispatch information is sent to target terminal, and specifying in the predetermined quantity TTI time after the TTI time, the Downlink Control Information not comprising down dispatch information is sent to target terminal, make on the one hand target terminal can within this appointment TTI time and in the follow-up predetermined quantity TTI time, down dispatch information according to receiving within this appointment TTI time receives and demodulates downlink data, it also avoid on the other hand that base station in correlation technique all needs to send corresponding down dispatch information within each TTI time and the situation that increases Downlink Control Information expense occurs, effectively reduce the resource that down dispatch information takies, reduce the signaling consumption of Downlink Control Information, thus correspondingly increase the resource of transmitting data information, improve the efficiency of transmission of data.
In technique scheme, preferably, also comprise: acquiring unit 306 or setting unit 308.
Wherein, acquiring unit 306, is connected to described transmitting element 304, for obtaining the value of predefined described predetermined quantity, and is sent to described transmitting element 304; Setting unit 308, be connected to described transmitting element 304, time variation for the wireless channel according to described super-intensive network arranges the value of described predetermined quantity, and be sent to described transmitting element 304, wherein, the value of described predetermined quantity becomes inverse correlation relation with the time variation of the wireless channel of described super-intensive network.
In this technical scheme, the value of predetermined quantity can be standard agreement regulation, and can also arrange according to the time variation of the wireless channel of super-intensive network, particularly, the time variation of wireless channel is lower, and the value of predetermined quantity is larger; On the contrary, the time variation of wireless channel is higher, and the value of predetermined quantity is less.
In above-mentioned any one technical scheme, preferably, described down dispatch information comprises: described base station sends the carrier information and resource block information that described downlink data uses, and the MCS information that described base station is modulated described downlink data and encoded.
In above-mentioned any one technical scheme, preferably, also comprise: dispensing unit 310, for configuring the value of described predetermined quantity by high-level signaling or physical layer signaling to described target terminal.
Fig. 4 shows the schematic block diagram of the data transmission device for super-intensive network according to another embodiment of the invention.
As shown in Figure 4, the data transmission device 400 for super-intensive network according to another embodiment of the invention, is applicable to terminal, comprises: the first receiving element 402, processing unit 404.
Wherein, the first receiving element 402, for receiving the Downlink Control Information including down dispatch information that base station sends within the appointment TTI time; Processing unit 404, be connected to described first receiving element 402, for within the described appointment TTI time, and after the described appointment TTI time in the predetermined quantity TTI time, according to described down dispatch information, the downlink data that described base station sends is received and demodulated.
In this technical scheme, by receiving the Downlink Control Information including down dispatch information that base station sends within the appointment TTI time, and within the appointment TTI time, and after the appointment TTI time in the predetermined quantity TTI time, down dispatch information according to receiving within this appointment TTI time receives and demodulates the downlink data that base station sends, avoid the down dispatch information that terminal in correlation technique needs reception base station to send within each TTI time, and need the problem of according to the down dispatch information received within each TTI time, data being carried out to receiving demodulation, make base station need not send down dispatch information within each TTI time, effectively reduce the resource that down dispatch information takies, reduce the signaling consumption of Downlink Control Information, thus correspondingly increase the resource of transmitting data information, improve the efficiency of transmission of data.
In technique scheme, preferably, also comprise: acquiring unit 406 or the second receiving element 408.
Wherein, acquiring unit 406, is connected to described processing unit 404, for obtaining the value of predefined described predetermined quantity, and is sent to described processing unit 404; Second receiving element 408, is connected to described processing unit 404, for receiving the value of the described predetermined quantity that described base station is configured by high-level signaling or physical layer signaling, and is sent to described processing unit 404.
In this technical scheme, for the value of predetermined quantity, terminal can obtain the predefined value specified in standard agreement, or receives the value of base station configuration.
As shown in Figure 5, the invention allows for a kind of base station 500, comprising: the data transmission device 300 for super-intensive network as shown in Figure 3.
As shown in Figure 6, the invention allows for a kind of terminal 600, comprising: the data transmission device 400 for super-intensive network as shown in Figure 4.
In sum, in the inventive solutions, descending scheduling situation is determined in base station in certain TTI (as TTI0), produce corresponding DCI information, then continuous transmission downlink data in ensuing N (N>=1) individual TTI (TTI1 ~ N), and do not need the down dispatch information transmitting this object UE in DCI in this N number of TTI, as the carrier wave distributed, the information that RB resource is relevant with MCS, namely in ensuing N number of TTI, the carrier wave that the data sent object UE use is determined according to the DCI information of TTI0 in base station, RB and MCS etc.Particularly:
The dispatch situation to object UE, in certain TTI (TTI0), is determined in base station, is included in this TTI carrier wave, the RB of distribution, the MCS mode etc. of use of determining to distribute to object UE;
Corresponding DCI and corresponding data message are sent to object UE at TTI0 by base station, and UE, according to the instruction of DCI in TTI0, demodulates in TTI0 the data message issuing this UE;
In TTI1 ~ N, base station, according to the situation of the object UE scheduling determined in TTI0, the carrier wave of specifying, the RB specified uses the MCS specified to send data to object UE.In TTI1 ~ N, also send corresponding DCI simultaneously, but the MCS information of the RB information of the carrier information that the DCI in TTI1 ~ N does not have object UE to distribute, distribution, use, therefore, it is possible to reduce the signaling consumption of DCI, reduce the resource that control information takies, allow more resource for the transmission of data;
Accordingly, in TTI1 ~ N, object UE, after receiving the data sent of base station, carrys out demodulating data according to the carrier information of the distribution indicated in TTI0, the RB information of distribution, the MCS information etc. of use.
More than be described with reference to the accompanying drawings technical scheme of the present invention, the present invention proposes a kind of data transmission scheme for super-intensive network newly, effectively can reduce the signaling consumption of Downlink Control Information, thus correspondingly increase the resource of transmitting data information, improve the efficiency of transmission of data.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. for a data transmission method for super-intensive network, be applicable to base station, it is characterized in that, comprising:
Within the appointment TTI time, determine the down dispatch information to target terminal;
Within the described appointment TTI time, the Downlink Control Information comprising described down dispatch information is sent to described target terminal, to make described target terminal within the described appointment TTI time, and after the described appointment TTI time in the predetermined quantity TTI time, according to described down dispatch information, the downlink data that described base station sends is received and demodulated;
In the predetermined quantity TTI time after the described appointment TTI time, if desired send Downlink Control Information to described target terminal, then send the Downlink Control Information not comprising described down dispatch information to described target terminal.
2. the data transmission method for super-intensive network according to claim 1, is characterized in that, also comprise:
Obtain the value of predefined described predetermined quantity; Or
Arrange the value of described predetermined quantity according to the time variation of the wireless channel of described super-intensive network, wherein, the value of described predetermined quantity becomes inverse correlation relation with the time variation of the wireless channel of described super-intensive network.
3. the data transmission method for super-intensive network according to claim 1 and 2, is characterized in that, described down dispatch information comprises:
Described base station sends the carrier information and resource block information that described downlink data uses, and the MCS information that described base station is modulated described downlink data and encoded.
4. the data transmission method for super-intensive network according to claim 1 and 2, is characterized in that, also comprise:
The value of described predetermined quantity is configured to described target terminal by high-level signaling or physical layer signaling.
5. for a data transmission method for super-intensive network, be applicable to terminal, it is characterized in that, comprising:
Receive the Downlink Control Information including down dispatch information that base station sends within the appointment TTI time;
Within the described appointment TTI time, and after the described appointment TTI time in the predetermined quantity TTI time, according to described down dispatch information, the downlink data that described base station sends is received and demodulated.
6. the data transmission method for super-intensive network according to claim 5, is characterized in that, also comprise:
Obtain the value of predefined described predetermined quantity; Or
Receive the value of the described predetermined quantity that described base station is configured by high-level signaling or physical layer signaling.
7. for a data transmission device for super-intensive network, be applicable to base station, it is characterized in that, comprising:
Determining unit, within the appointment TTI time, determines the down dispatch information to target terminal;
Transmitting element, be connected to described determining unit, for within the described appointment TTI time, the Downlink Control Information comprising described down dispatch information is sent to described target terminal, to make described target terminal within the described appointment TTI time, and after the described appointment TTI time in the predetermined quantity TTI time, according to described down dispatch information, the downlink data that described base station sends is received and demodulated, and for
In the predetermined quantity TTI time after the described appointment TTI time, if desired send Downlink Control Information to described target terminal, then send the Downlink Control Information not comprising described down dispatch information to described target terminal.
8. the data transmission device for super-intensive network according to claim 7, is characterized in that, also comprise:
Acquiring unit, is connected to described transmitting element, for obtaining the value of predefined described predetermined quantity, and is sent to described transmitting element; Or
Setting unit, be connected to described transmitting element, the time variation for the wireless channel according to described super-intensive network arranges the value of described predetermined quantity, and is sent to described transmitting element, wherein, the value of described predetermined quantity becomes inverse correlation relation with the time variation of the wireless channel of described super-intensive network.
9. the data transmission device for super-intensive network according to claim 7 or 8, is characterized in that, described down dispatch information comprises:
Described base station sends the carrier information and resource block information that described downlink data uses, and the MCS information that described base station is modulated described downlink data and encoded.
10. the data transmission device for super-intensive network according to claim 7 or 8, is characterized in that, also comprise:
Dispensing unit, for configuring the value of described predetermined quantity by high-level signaling or physical layer signaling to described target terminal.
11. 1 kinds for the data transmission device of super-intensive network, are applicable to terminal, it is characterized in that, comprising:
First receiving element, for receiving the Downlink Control Information including down dispatch information that base station sends within the appointment TTI time;
Processing unit, is connected to described first receiving element, within the described appointment TTI time, and after the described appointment TTI time in the predetermined quantity TTI time, receives and demodulates the downlink data that described base station sends according to described down dispatch information.
12. data transmission devices for super-intensive network according to claim 11, is characterized in that, also comprise:
Acquiring unit, is connected to described processing unit, for obtaining the value of predefined described predetermined quantity, and is sent to described processing unit; Or
Second receiving element, is connected to described processing unit, for receiving the value of the described predetermined quantity that described base station is configured by high-level signaling or physical layer signaling, and is sent to described processing unit.
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