CN109716840A - Data transmission method, base station and user equipment - Google Patents
Data transmission method, base station and user equipment Download PDFInfo
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- CN109716840A CN109716840A CN201680089351.1A CN201680089351A CN109716840A CN 109716840 A CN109716840 A CN 109716840A CN 201680089351 A CN201680089351 A CN 201680089351A CN 109716840 A CN109716840 A CN 109716840A
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Abstract
The embodiment of the invention discloses data transmission method, base station and user equipmenies, and the symbol time delay that can be avoided strong covering power interferes the symbol of weak covering power, to ensure that being properly received for the subframe of weak covering power.The method comprise the steps that base station generates subframe configuration information；When the base station according to the subframe configuration information determine the first subframe symbol covering power be greater than the second subframe symbol covering power when; the preceding n symbol of second subframe is set protection interval by the base station; first subframe is the previous subframe adjacent with second subframe, and the n is default value；The subframe configuration information is sent to user equipment (UE) by the base station, so that the UE receives data according to the subframe configuration information and the protection interval got.
Description
The present invention relates to field of communication technology more particularly to data transmission methods, base station and user equipment.
Long term evolution (full name in English: Lone Term Evolution, english abbreviation: LTE) in multimedia broadcast multi-broadcasting business (full name in English: Multimedia Broadcast Multicast Service, english abbreviation: MBMS) in a specific region identical content is provided for multiple users, this specific region is known as the region MBMS, it may be transmitted simultaneously comprising multiple cells in the region MBMS, and the physical resource of point-to-multipoint is configured in each cell, user equipment (full name in English: User Equipment, english abbreviation: UE) what is received is the composite signal of above-mentioned multiple cells, but in the side UE, the composite signal is equivalent to believes through dispersion after a period of time The signal of the single transmitter in road, the transmission mode of the identical content of this multiple cell simultaneous transmissions is known as multicast broadcast single frequency network (full name in English: Multimedia Broadcast Single Frequency Network, english abbreviation: MBSFN) transmission mode, the key benefit of MBSFN is that the identical content of multiple cell simultaneous transmissions enhances received signal strength, reduces interference, improves the diversity gain of system.In MBSFN, MBSFN sub-frame mainly includes control area and the region MBSFN, it is respectively used to control signaling and Multicast Channel (Multicast Channel, english abbreviation: MCH) transmission, now, MBMS has developed into the multimedia broadcast multi-broadcasting business (full name in English: Enhanced Multimedia Broadcast Multicast Service of enhancing, english abbreviation: eMBMS), in order to extend the covering power of eMBMS, for example 15 kilometers of single station is supported to cover, need to further expand the cyclic prefix (full name in English: Cyclic Prefix in MCH transmission, english abbreviation: CP) length, when for carrying MCH transmission When the CP duration that MBSFN sub-frame is supported is excessive, the sub-frame transmission of different covering powers may be needed while supported in MBSFN, but the problem is that switching intersection in the symbol for supporting two kinds of covering powers, support the symbol of longer CP that can merge the symbol for undergoing longer transmission time, to there is better multipath gain, as shown in Figure 1, UE can receive the data from different transmission ranges, symbol longer for CP, when the part CP from the symbol compared with far path has overlapping with the part the CP of the symbol compared with near-path, then still useful signal can be merged by UE, but when the long CP symbol of a subframe is before the short CP symbol of another subframe, long CP symbol can exceed that the CP duration of short CP symbol compared with the time delay of far path, to the data field with short CP symbol Domain generates overlapping, and then to short CP symbol
Reception causes intersymbol interference (full name in English: Inter Symbol Interference, english abbreviation: ISI), that is to say that multipath signal interferes, it is therefore necessary to the problem is considered in the design to MBSFN sub-frame structure.
In existing scheme, MBSFN sub-frame structure is defined in a standard, it is specifically defined such as 4 two kinds of situations of situation 3 in Fig. 2 and situation, situation 1 and situation 2 are other subframe structures defined in standard, but be not applied to MBSFN sub-frame, be divided into 15khz between 1 sub-carriers of situation, when CP of first symbol a length of 5.2us, a length of 4.7us when the CP of other symbols, and CP is normal CP；Be divided into 15khz between 2 sub-carriers of situation, when CP a length of 16.7us, and CP is extension CP；Be divided into 15khz between 3 sub-carriers of situation, before two symbols be control area, behind symbol be the region MBSFN, when CP a length of 16.7us；Be divided into 7.5khz between 4 sub-carriers of situation, symbol is all the region MBSFN, when CP a length of 33.3us, and CP is extension CP.
However, with the promotion of MCH covering power demand, longer CP duration is needed at this time, such as the CP of 100us or 200us, its duration is already close to or more than the symbol duration that defines of existing scheme, so biggish interference can be brought in the symbol intersection of adjacent sub-frame, therefore, the possible interference problem of symbol intersection of different covering powers is not considered in existing MBSFN.
Summary of the invention
The embodiment of the invention provides data transmission method, base station and user equipmenies, and the symbol time delay that can be avoided strong covering power interferes the symbol of weak covering power, to ensure that being properly received for the subframe of weak covering power.
The first aspect of the embodiment of the present invention provides a kind of data transmission method, comprising:
Base station generates subframe configuration information, and subframe configuration information is used to determine the structure of each subframe, such as the CP duration of each area symbology of each subframe, and transmission start time point and certain symbols that whether need to leave a blank are as protection interval etc.；When base station according to subframe configuration information determine the first subframe symbol covering power be greater than the second subframe symbol covering power when; the preceding n symbol of the second subframe is set protection interval by base station; in timing; first subframe is the previous subframe adjacent with the second subframe; n is default value, for example the value of n is 1,2 or 3；Subframe configuration information is sent to user equipment (UE) by base station, so that UE receives data according to subframe configuration information and the protection interval got.It should be understood that the message of protection interval can be sent to UE using modes such as broadcast by base station.As it can be seen that when the symbol of the different subframes of different covering powers is adjacent, i.e., when the subframe with different covering powers is adjacent, and previous subframe
When covering power is stronger, the symbol of weak covering power can be interfered to avoid the symbol time delay of strong covering power by the way that protection interval is arranged, to ensure that being properly received for the subframe of weak covering power.
In some possible implementations; if subframe configuration information includes the CP duration of the CP duration of the symbol of the first subframe and the symbol of the second subframe; then when base station according to the CP duration of the CP duration of the symbol of the first subframe and the symbol of the second subframe determine the first subframe symbol covering power be greater than the second subframe symbol covering power when, the preceding n symbol of the second subframe is set protection interval by base station.
It should be understood that the covering power of the symbol of the first subframe is greater than the covering power of the symbol of the second subframe when the CP duration of the symbol of the first subframe is greater than the CP duration of the symbol of the second subframe.
In other possible implementations, this method further include:
Base station broadcasts which subframe (the second subframe) contains protection interval to UE by broadcast channel, the when a length of fixed integer symbol appointed of the protection interval.
In other possible implementations, this method further include:
Broadcast which subframe (the second subframe) contains the duration of protection interval and protection interval to UE by broadcast channel in base station.
Second aspect of the embodiment of the present invention provides a kind of data transmission method, comprising:
User equipment (UE) receives the subframe configuration information that base station is sent, which is the subframe configuration information that base station generates；UE receives subframe configuration information, calculate the structure of each subframe, CP duration including each area symbology of each subframe, transmission start time point and certain symbols of whether having left a blank are as protection interval etc., and combine the reception of the protection interval progress downlink data got, wherein, the protection interval be when base station according to subframe configuration information determine the first subframe symbol covering power be greater than the second subframe symbol covering power when, protection interval made of the preceding n symbol of second subframe is arranged for base station, and first subframe be the previous subframe adjacent with the second subframe, n is default value.It can be seen that; when the symbol of the different subframes of different covering powers is adjacent; when i.e. the subframe with different covering powers is adjacent; and previous subframe covering power it is stronger when; the symbol of weak covering power can be interfered to avoid the symbol time delay of strong covering power by the way that protection interval is arranged, to ensure that being properly received for the subframe of weak covering power.
In some possible implementations, after UE receives subframe configuration information and gets protection interval, included according to subframe configuration information and the protection interval received data packet got:
After UE receives subframe configuration information, the information of the protection interval set is sent to UE by base station, and after UE receives the information of protection interval, UE is according to the subframe configuration information and protection interval received
Information receive data.Wherein, the information of the protection interval is used to notify which subframe of UE (the second subframe) that there is the information of the protection interval or the protection interval to be used to which subframe of UE (the second subframe) to be notified to have the protection interval and the duration of the protection interval.
In other possible implementations, UE is included according to subframe configuration information and the protection interval received data packet got:
EMBMS carrier wave of the UE access to coverage enhancement, when UE carries out cell searching, it is found when the second subframe by primary synchronization signal and secondary synchronization signal (since primary synchronization signal and secondary synchronization signal only occur in normal or extension CP subframe on eMBMS carrier wave), UE determines a length of protection interval when the second subframe front is fixed, thus, UE, which sends any message informing about protection interval without base station, can determine the protection interval that the second subframe received contains fixed duration, and then data are received according to subframe configuration information and protection interval, broadcast channel resource need not thus be occupied.
The third aspect of the embodiment of the present invention provides a kind of base station, comprising:
Generation module, for generating subframe configuration information, subframe configuration information is used to determine the structure of each subframe, such as the CP duration of each area symbology of each subframe, and transmission start time point and certain symbols that whether need to leave a blank are as protection interval etc.；Setup module; for when determining that the covering power of symbol of the first subframe is greater than the covering power of the symbol of the second subframe according to subframe configuration information; protection interval is set by the preceding n symbol of the second subframe; in timing; first subframe is the previous subframe adjacent with the second subframe; n is default value, for example the value of n is 1,2 or 3；Sending module, for subframe configuration information to be sent to user equipment (UE), so that UE receives data according to subframe configuration information and the protection interval got.It should be understood that the message of protection interval can be sent to UE using modes such as broadcast by base station.It can be seen that; when the symbol of the different subframes of different covering powers is adjacent; when i.e. the subframe with different covering powers is adjacent; and previous subframe covering power it is stronger when; the symbol of weak covering power can be interfered to avoid the symbol time delay of strong covering power by the way that protection interval is arranged, to ensure that being properly received for the subframe of weak covering power.
In some possible implementations; if subframe configuration information includes the CP duration of the CP duration of the symbol of the first subframe and the symbol of the second subframe; setup module; when covering power specifically for determining symbol that the covering power of the symbol of the first subframe is greater than the second subframe when the CP duration according to the symbol of the CP duration and the second subframe of the symbol of the first subframe, set the preceding n symbol of the second subframe between protection
Every, wherein the CP duration of the symbol of the first subframe is greater than the CP duration of the symbol of the second subframe.
In other possible implementations, sending module is also used to broadcast which subframe (the second subframe) contains protection interval to UE by broadcast channel, the when a length of fixed integer symbol appointed of the protection interval.
In other possible implementations, sending module is also used to broadcast which subframe (the second subframe) contains the duration of protection interval and protection interval to UE by broadcast channel.
Fourth aspect of the embodiment of the present invention provides a kind of user equipment (UE), comprising:
First receiving module, for receiving the subframe configuration information of base station transmission, subframe configuration information is the subframe configuration information that base station generates；
Second receiving module, after receiving subframe configuration information, calculate the structure of each subframe, CP duration including each area symbology of each subframe, transmission start time point and certain symbols of whether having left a blank are as protection interval etc., and combine the reception of the protection interval progress downlink data got, wherein, the protection interval be when base station according to subframe configuration information determine the first subframe symbol covering power be greater than the second subframe symbol covering power when, protection interval made of the preceding n symbol of second subframe is arranged for base station, and first subframe be the previous subframe adjacent with the second subframe, n is default value.It can be seen that; when the symbol of the different subframes of different covering powers is adjacent; when i.e. the subframe with different covering powers is adjacent; and previous subframe covering power it is stronger when; the symbol of weak covering power can be interfered to avoid the symbol time delay of strong covering power by the way that protection interval is arranged, to ensure that being properly received for the subframe of weak covering power.
In some possible implementations, the second receiving module, specifically for receiving the information for the protection interval that base station is sent；Data are received according to the information of subframe configuration information and protection interval；Wherein, the information of the protection interval is used to notify which subframe of UE (the second subframe) that there is the information of the protection interval or the protection interval to be used to which subframe of UE (the second subframe) to be notified to have the protection interval and the duration of the protection interval.
In other possible implementations; second receiving module; specifically for the eMBMS carrier wave of UE access to coverage enhancement; when UE carries out cell searching; it is found when the second subframe by primary synchronization signal and secondary synchronization signal (since primary synchronization signal and secondary synchronization signal only occur in normal or extension CP subframe on eMBMS carrier wave); UE determines a length of protection interval when the second subframe front is fixed, as a result, UE without
The protection interval that the second subframe received contains fixed duration can be determined by needing base station to send any message informing about protection interval, and then receive data according to subframe configuration information and protection interval, need not thus occupy broadcast channel resource.
In technical solution provided in an embodiment of the present invention; when the symbol of the different subframes of different covering powers is adjacent; when i.e. the subframe with different covering powers is adjacent; and previous subframe covering power it is stronger when; the symbol of weak covering power can be interfered to avoid the symbol time delay of strong covering power by the way that protection interval is arranged, to ensure that being properly received for the subframe of weak covering power.
Fig. 1 is that multipath signal interferes schematic diagram in the prior art；
Fig. 2 is a kind of subframe structure schematic diagram in the prior art；
Fig. 3 is system architecture schematic diagram in the embodiment of the present invention；
Fig. 4 is data transmission method one embodiment schematic diagram in the embodiment of the present invention；
Fig. 5 is another embodiment schematic diagram of data transmission method in the embodiment of the present invention；
Fig. 6 is another embodiment schematic diagram of data transmission method in the embodiment of the present invention；
Fig. 7 is one embodiment schematic diagram of base station in the embodiment of the present invention；
Fig. 8 is another embodiment schematic diagram of base station in the embodiment of the present invention；
Fig. 9 is user equipment (UE) one embodiment schematic diagram in the embodiment of the present invention；
Figure 10 is another embodiment schematic diagram of user equipment (UE) in the embodiment of the present invention；
Figure 11 is system one embodiment schematic diagram in the embodiment of the present invention.
Following will be combined with the drawings in the embodiments of the present invention, and technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those skilled in the art's every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Description and claims of this specification and the (if present)s such as term " first " in above-mentioned attached drawing, " second ", " third ", " the 4th " are to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that the data used in this way are interchangeable under appropriate circumstances, so that the embodiments described herein can be implemented with the sequence other than the content for illustrating or describing herein.In addition, art
Language " comprising " and " having " and their any deformation, it is intended to cover and non-exclusive includes, such as, the process, method, system, product or equipment for containing a series of steps or units those of are not necessarily limited to be clearly listed step or unit, but may include other step or units being not clearly listed or intrinsic for these process, methods, product or equipment.
Present invention is mainly applied to LTE communication system, the system architecture of LTE is as shown in figure 3, each network element and interface are described as follows in Fig. 3:
Mobility management entity/gateway (full name in English: Mobility Management Entity/Serving-Gateway, english abbreviation: MME/S-GW): MME is the key control node in LTE, belong to core network element, it is mainly responsible for signaling processing part, that is control plane function, including access control, mobile management, attachment and attachment removal, conversation management functional and gateway such as select at the functions.S-GW is the important network element of core net in LTE, is mainly responsible for the user plane functions of user data forwarding, i.e., the routing and forwarding of data packet are carried out under the control of MME.
Base station (full name in English: evolved Node B, english abbreviation: eNB): base station is mainly responsible for the functions such as the wireless resource management for side of eating dishes without rice or wine, service quality (full name in English: Quality of Service, english abbreviation: QoS) management, data compression and encryption.Core-network side, base station, which is mainly responsible for, forwards control plane signaling to MME and to/S-GW forwarding user face business datum.
UE:UE is the equipment for passing through base station access network network side in LTE, such as can be handheld terminal, laptop or other equipment that can access network.
S1 interface: S1 interface is the standard interface between base station and core net, wherein base station is connect by S1-MME interface with MME, and for the transmission of control signaling, base station is connect by S1-U interface with S-GW, for the transmission of user data, wherein S1-MME interface and S1-U interface are referred to as S1 interface.
X2 interface: X2 interface is the standard interface between base station and base station, for realizing the intercommunication between base station.
On the basis of the system architecture of LTE above, the data transmission method in the embodiment of the present invention is illustrated below by specific embodiment, referring to Fig. 4, data transmission method one embodiment includes: in the embodiment of the present invention
101, base station generates subframe configuration information；
In the present embodiment, base station will do it radio-resource-configuration, i.e. generation subframe configuration information, pass through son
Frame configuration information determines the structure of each subframe, for example, each area symbology of each subframe CP duration, transmission start time point and certain symbols that whether need to leave a blank as protection interval etc..
102, when base station according to the subframe configuration information determine the first subframe symbol covering power be greater than the second subframe symbol covering power when, the preceding n symbol of the second subframe is set protection interval by base station；
In the present embodiment, the first subframe is adjacent with the second subframe, and in timing, the first subframe is located at before the second subframe, and wherein n is default value.In addition, covering power by force in requisition for CP be long CP, covering power it is weak in requisition for CP be short CP, i.e. the CP of symbol is long CP in the first subframe, and the CP of symbol is short CP in the second subframe.
If subframe configuration information includes the CP duration of the CP duration of the symbol of the first subframe and the symbol of the second subframe; then step 102 can be with specifically: when base station determines according to the CP duration of the CP duration of the symbol of the first subframe and the symbol of the second subframe the covering power of the covering power symbol that is greater than the second subframe of the symbol of the first subframe; the preceding n symbol of the second subframe is set protection interval by base station; wherein, the CP duration of the symbol of the first subframe is greater than the CP duration of the symbol of the second subframe.
Since base station is when arranging the subframe structure of transmitted data, it can according to certain rules (in other words as needed) be that different CP is arranged in different subframes, so will know the CP length of each subframe in timing, it is also easy for the case where subframe covering power is greater than the covering power of latter subframe before determining when subframe is adjacent.
It should be understood that, due to symbol covering power having the same all in subframe, so base station can be compared by the covering power of any one symbol in the covering power and the second subframe to any one symbol in the first subframe, to replace comparing the covering power of first symbol in the covering power of last symbol in the first subframe and the second subframe.
It should be noted that, base station can determine the covering power of the symbol of every two adjacent sub-frame according to the subframe configuration information, when determining that the covering power of symbol of the previous subframe in two neighboring subframe is greater than the covering power of the symbol of the latter subframe, the preceding n symbol of the latter subframe is set protection interval by base station, for example the value of n is 1, 2 or 3, the adjacent-symbol that the value of protection interval is referred to adjacent sub-frame corresponds to the difference of CP duration, that is the difference of the duration of the short CP of the duration and the second subframe of the long CP of the first subframe, on the one hand the long CP symbol of such first subframe can make full use of long CP bring to merge gain, enhance covering power, on the other hand, the interference from the time delay of the long CP symbol compared with far path CP symbol short to rear adjacent can also be avoided as far as possible；It is 100us with long CP value in addition combined with Fig. 2
Or for 200us, the specific value of n is referred to following table:
| (long CP, short CP) | The value of n |
| (100us, normal CP) | 1 |
| (100us extends CP16.7us) | 1 |
| (100us extends CP33.3us) | 1 |
| (200us, normal CP) | 2 or 3 |
| (200us extends CP16.7us) | 2 |
| (200us extends CP33.3us) | 1 |
103, the subframe configuration information is sent to user equipment (UE) by base station.
In the present embodiment, base station is after generating subframe configuration information, and base station can be by subframe configuration information by broadcasting to UE, also, base station can choose the message of protection interval being sent to UE.
104, UE receives data according to the subframe configuration information and the protection interval got.
In the present embodiment, under the eMBMS scene of coverage enhancement, the data that base station is sent are concentrated mainly in the subframe of the stronger long CP symbol of covering power, base station can send the subframe of one or continuous several short CP symbols at regular intervals, to which UE can receive the subframe of one or continuous several short CP symbols at regular intervals, UE is after receiving broadcast or multicast business to base station requests, UE will be considered that the symbol of fixed quantity before the subframe of first received short CP symbol as protection interval, this fixed quantity can be the preset numerical value in base station, the protection interval that the second subframe being subject to contains fixed duration is thought to which UE may not need base station and send any message informing about protection interval, broadcast channel resource just need not be occupied in this way.
It should be understood that, since UE will do it cell searching at the beginning, primary synchronization signal (full name in English: Primary Synchronization Signal when UE passes through cell searching, english abbreviation: PSS) and secondary synchronization signal (full name in English: Secondary Synchronization Signal, english abbreviation: SSS) it finds when the second subframe (since primary synchronization signal and secondary synchronization signal only occur in normal or extension CP subframe on eMBMS carrier wave), UE determines a length of protection interval when the second subframe front is fixed, it should be understood that, the preceding n symbol of a length of preset second subframe in base station when fixed.
In the present embodiment; when the symbol of the different subframes of different covering powers is adjacent; when i.e. the subframe with different covering powers is adjacent; and previous subframe covering power it is stronger when; the symbol of weak covering power can be interfered to avoid the symbol time delay of strong covering power by the way that protection interval is arranged, to ensure that
The subframe of weak covering power is properly received.
The data transmission method in the embodiment of the present invention is illustrated from the angle of base station below, referring to Fig. 5, another embodiment of data transmission method includes: in the embodiment of the present invention
201, base station generates subframe configuration information；
In the present embodiment; base station will do it radio-resource-configuration; generate subframe configuration information, determine the structure of each subframe by subframe configuration information, for example, each area symbology of each subframe CP duration, transmission start time point and certain symbols that whether need to leave a blank as protection interval etc..
202, base station according to the subframe configuration information determine the first subframe symbol covering power be greater than the second subframe symbol covering power；
In the present embodiment, under the subframe configuration information, it is stronger (to the symbol in requisition for longer CP) in the weaker symbol of covering power (in requisition for before shorter CP) that there are covering powers.
203, the preceding n symbol of the second subframe is set protection interval by base station；
In the present embodiment; base station is after setting protection interval for the preceding n symbol of the second subframe; base station can be numbered from 0 again in the sign bit after protection interval; protection interval is not take up sign bit; so that resource impact still is able to since sign bit 0; UE be will not influence to the reception sequence of the information in the second subframe, and the second sub-frame boundary can be aligned.
Certainly; base station is after setting protection interval for the preceding n symbol of the second subframe; base station also can choose and not renumber; UE in this way to the reception of the information in the second subframe is received from (n+1)th sign-on of the second subframe, just will not influence the control channel position in a radio frame for time synchronization in this way.
204, the subframe configuration information is sent to user equipment (UE) by base station.
In the present embodiment, base station is after generating subframe configuration information, and base station can be by subframe configuration information by broadcasting to UE, also, base station can choose the message of protection interval being sent to UE.
205, base station sends the first information, at least one second subframe which is used to that UE to be notified to have the protection interval to UE, so that UE receives data according to the subframe configuration information and the first information.
In the present embodiment; base station can pass through broadcast channel (full name in English: Broadcast Channel; english abbreviation: BCH) to UE broadcast which subframe (the second subframe) contains protection interval, the when a length of fixed integer symbol appointed of the protection interval.
In some possible implementations of the invention, step 205 can be with are as follows:
Base station sends the second information to UE, the duration of at least one second subframe and protection interval which is used to that UE to be notified to have the protection interval, so that UE receives data according to the subframe configuration information and the second information.
In the present embodiment, base station can broadcast which subframe (the second subframe) contains the duration of protection interval and protection interval to UE by BCH, and the value range of the duration of the protection interval is 1 to 3 symbol.
In the present embodiment; when the symbol of the different subframes of different covering powers is adjacent; when i.e. the subframe with different covering powers is adjacent; and previous subframe covering power it is stronger when; the symbol of weak covering power can be interfered to avoid the symbol time delay of strong covering power by the way that protection interval is arranged, to ensure that being properly received for the subframe of weak covering power.
The data transmission method in the embodiment of the present invention is illustrated from the angle of UE below, referring to Fig. 6, another embodiment of data transmission method includes: in the embodiment of the present invention
301, UE receives the subframe configuration information that base station is sent, which is the subframe configuration information that base station generates；
In the present embodiment, after base station generates subframe configuration information, which is sent to UE by base station.
302, UE receives the information for the protection interval that base station is sent；
In the present embodiment; the protection interval be when base station according to the subframe configuration information determine the first subframe symbol covering power be greater than the second subframe symbol covering power when; protection interval made of the preceding n symbol of second subframe is arranged for base station; first subframe is the previous subframe adjacent with the second subframe, and n is preset value.
Wherein, at least one second subframe that the information of the protection interval is used to that UE to be notified to have the protection interval, or, the duration of at least one the second subframe and the protection interval that the information of the protection interval is used to that UE to be notified to have the protection interval.
303, UE receives data according to the information of the subframe configuration information and the protection interval.
In the present embodiment; UE can receive the subframe configuration information and the information of the protection interval by BCH; and then calculate the structure of each subframe; and the reception of downlink data is carried out according to the result of each subframe; such as after UE first receives the system information on BCH, then receive Downlink Control Information and downlink business
Data.
Optionally, in some embodiments of the invention, UE is included according to the information received data packet of subframe configuration information and protection interval: when UE carry out cell searching when, UE according in cell searching primary synchronization signal and secondary synchronization signal determine protection interval；UE receives data according to subframe configuration information and protection interval.
Specifically, when the eMBMS carrier wave of UE access to coverage enhancement, when UE carries out cell searching, it is found when the second subframe by primary synchronization signal and secondary synchronization signal (since primary synchronization signal and secondary synchronization signal only occur in normal or extension CP subframe on eMBMS carrier wave), UE determines a length of protection interval when the second subframe front is fixed, thus, UE, which sends any message informing about protection interval without base station, can determine the protection interval that the second subframe received contains fixed duration, and then data are received according to subframe configuration information and protection interval, broadcast channel resource need not thus be occupied.
The data transmission method in the embodiment of the present invention is described above, the base station in the embodiment of the present invention is described below, referring to Fig. 7, one embodiment of base station includes: in the embodiment of the present invention
Generation module 401, for generating subframe configuration information；
Setup module 402; for when determining that the covering power of symbol of the first subframe is greater than the covering power of the symbol of the second subframe according to subframe configuration information; protection interval is set by the preceding n symbol of the second subframe, the first subframe is the previous subframe adjacent with the second subframe, and n is default value；
Sending module 403, for subframe configuration information to be sent to user equipment (UE), so that UE receives data according to subframe configuration information and the protection interval got.
In the present embodiment; when the symbol of the different subframes of different covering powers is adjacent; when i.e. the subframe with different covering powers is adjacent; and previous subframe covering power it is stronger when; the symbol of weak covering power can be interfered to avoid the symbol time delay of strong covering power by the way that protection interval is arranged, to ensure that being properly received for the subframe of weak covering power.
Optionally; on the basis of the embodiment corresponding to above-mentioned Fig. 7; in the embodiment of the present invention in another embodiment of base station; if subframe configuration information includes the CP duration of the CP duration of the symbol of the first subframe and the symbol of the second subframe; then setup module 402; when covering power specifically for determining symbol that the covering power of the symbol of the first subframe is greater than the second subframe when the CP duration according to the symbol of the CP duration and the second subframe of the symbol of the first subframe, protection interval is set by the preceding n symbol of the second subframe；The CP duration of the symbol of first subframe is greater than the CP duration of the symbol of the second subframe.
Optionally, on the basis of the embodiment corresponding to above-mentioned Fig. 7, in the embodiment of the present invention in another embodiment of base station, sending module 403, specifically for subframe configuration information is sent to user equipment (UE) by broadcast channel.
Optionally; on the basis of the embodiment corresponding to above-mentioned Fig. 7, in the embodiment of the present invention in another embodiment of base station, sending module 403; it is also used to send the first information, at least one second subframe which is used to that UE to be notified to have the protection interval to UE.
In the present embodiment, sending module 403 can broadcast which subframe (the second subframe) contains protection interval to UE by BCH, the when a length of fixed integer symbol appointed of the protection interval.
Optionally; on the basis of the embodiment corresponding to above-mentioned Fig. 7; in the embodiment of the present invention in another embodiment of base station; sending module 403; it is also used to send the second information to UE, the duration of at least one the second subframe and the protection interval which is used to that UE to be notified to have the protection interval.
In the present embodiment, sending module 403 can broadcast which subframe (the second subframe) contains the duration of protection interval and protection interval to UE by BCH, and the value range of the duration of the protection interval is 1 to 3 symbol.
The base station in the embodiment of the present invention is described from the angle of modular functionality entity above, the base station in the embodiment of the present invention is described from the angle of hardware handles below, referring to Fig. 8, the base station in the embodiment of the present invention includes: processor 501, transmitter 502 and memory 503.
The present embodiments relate to base station can have than more or fewer components illustrated in fig. 8, two or more components can be combined, or can have different components and configure or set up, all parts can be in the combination realization of hardware, software or hardware and software including one or more signal processings and/or specific integrated circuit.
Processor 501 is for calling the instruction execution stored in memory 503 to operate as follows:
Generate subframe configuration information；
When determining that the covering power of symbol of the first subframe is greater than the covering power of the symbol of the second subframe according to the subframe configuration information; protection interval is set by the preceding n symbol of second subframe; first subframe is the previous subframe adjacent with second subframe, and the n is default value；
Transmitter 502 is for performing the following operations:
The subframe configuration information is sent to user equipment (UE), so that the UE receives data according to the subframe configuration information and the protection interval got.
Base station further include:
Memory 503 executes instruction required for corresponding operation for storage processor 501.
In the present embodiment; when the symbol of the different subframes of different covering powers is adjacent; when i.e. the subframe with different covering powers is adjacent; and previous subframe covering power it is stronger when; the symbol of weak covering power can be interfered to avoid the symbol time delay of strong covering power by the way that protection interval is arranged, to ensure that being properly received for the subframe of weak covering power.
Optionally, processor 501 is specifically used for performing the following operations:
If subframe configuration information includes the CP duration of the CP duration of the symbol of the first subframe and the symbol of the second subframe; then when the CP duration according to the symbol of the CP duration and the second subframe of the symbol of the first subframe determines the covering power for the symbol that the covering power of the symbol of the first subframe is greater than the second subframe, protection interval is set by the preceding n symbol of the second subframe；The CP duration of the symbol of first subframe is greater than the CP duration of the symbol of the second subframe.
Optionally, transmitter 502 is specifically used for performing the following operations:
Subframe configuration information is sent to user equipment (UE) by broadcast channel.
Optionally, transmitter 502 is also used to perform the following operations:
The first information, at least one second subframe that the first information is used to that UE to be notified to have protection interval are sent to UE.
Optionally, transmitter 502 is also used to perform the following operations:
The second information is sent to UE, the duration of at least one second subframe and protection interval that the second information is used to that UE to be notified to have protection interval.
The base station in the embodiment of the present invention is described above, introduces the user equipment (UE) in the embodiment of the present invention below by embodiment, referring to Fig. 9, one embodiment of user equipment (UE) includes: in the embodiment of the present invention
First receiving module 601, for receiving the subframe configuration information of base station transmission, subframe configuration information is the subframe configuration information that base station generates；
Second receiving module 602; for receiving data according to subframe configuration information and the protection interval got; protection interval be when base station according to subframe configuration information determine the first subframe symbol covering power be greater than the second subframe symbol covering power when; protection interval made of the preceding n symbol of second subframe is arranged for base station; first subframe is the previous subframe adjacent with the second subframe, and n is default value.
In the present embodiment; when the symbol of the different subframes of different covering powers is adjacent; when i.e. the subframe with different covering powers is adjacent; and previous subframe covering power it is stronger when; the symbol of weak covering power can be interfered to avoid the symbol time delay of strong covering power by the way that protection interval is arranged, to ensure that being properly received for the subframe of weak covering power.
Optionally, on the basis of the embodiment corresponding to above-mentioned Fig. 9, in the embodiment of the present invention in another embodiment of UE, the second receiving module 602, specifically for receiving the information for the protection interval that base station is sent；Data are received according to the information of subframe configuration information and protection interval；Wherein, at least one second subframe that the information of protection interval is used to that UE to be notified to have protection interval, or, the duration of at least one second subframe and protection interval that the information of protection interval is used to that UE to be notified to have protection interval.
Optionally; on the basis of the embodiment corresponding to above-mentioned Fig. 9, in the embodiment of the present invention in another embodiment of UE, the second receiving module 602; specifically for when carrying out cell searching, according in cell searching primary synchronization signal and secondary synchronization signal determine protection interval；Data are received according to subframe configuration information and protection interval.
The UE in the embodiment of the present invention is described from the angle of modular functionality entity above, the UE in the embodiment of the present invention is described from the angle of hardware handles below, referring to Fig. 10, the UE in the embodiment of the present invention includes: receiver 701, processor 702 and memory 703.
The present embodiments relate to UE can have than more or fewer components illustrated in fig. 10, two or more components can be combined, or can have different components and configure or set up, all parts can be in the combination realization of hardware, software or hardware and software including one or more signal processings and/or specific integrated circuit.
Receiver 701 is for performing the following operations:
The subframe configuration information that base station is sent is received, subframe configuration information is the subframe configuration information that base station generates；
Data are received according to subframe configuration information and the protection interval got; protection interval be when base station according to subframe configuration information determine the first subframe symbol covering power be greater than the second subframe symbol covering power when; protection interval made of the preceding n symbol of second subframe is arranged for base station; first subframe is the previous subframe adjacent with the second subframe, and n is default value.
In the present embodiment, when the symbol of the different subframes of different covering powers is adjacent, i.e., when the subframe with different covering powers is adjacent, and previous subframe covering power it is stronger when, can be with by setting protection interval
The symbol time delay of strong covering power is avoided to interfere the symbol of weak covering power, to ensure that being properly received for the subframe of weak covering power.
UE further include: processor 702, for calling the instruction execution stored in memory 703 to operate as follows:
Subframe structure is determined according to subframe configuration information and the protection interval got.
Memory 703 executes instruction required for corresponding operation for storage processor 702.
Optionally, receiver 701 is specifically used for performing the following operations:
Receive the information for the protection interval that base station is sent；Data are received according to the information of subframe configuration information and protection interval；Wherein, at least one second subframe that the information of protection interval is used to that UE to be notified to have protection interval, or, the duration of at least one second subframe and protection interval that the information of protection interval is used to that UE to be notified to have protection interval.
Optionally, receiver 701 is specifically used for performing the following operations:
When carrying out cell searching, according in cell searching primary synchronization signal and secondary synchronization signal determine protection interval；Data are received according to subframe configuration information and protection interval.
Figure 11 is please referred to, the embodiment of the present invention also provides a kind of system, which includes: base station 801 and user equipment 802；
Base station 801, for generating subframe configuration information；When determining that the covering power of symbol of the first subframe is greater than the covering power of the symbol of the second subframe according to subframe configuration information; protection interval is set by the preceding n symbol of the second subframe; first subframe is the previous subframe adjacent with the second subframe, and n is default value；Subframe configuration information is sent to user equipment 802；
User equipment 802, for receiving the subframe configuration information of the transmission of base station 801；Data are received according to subframe configuration information and the protection interval got.
In the present embodiment; when the symbol of the different subframes of different covering powers is adjacent; when i.e. the subframe with different covering powers is adjacent; and previous subframe covering power it is stronger when; the symbol of weak covering power can be interfered to avoid the symbol time delay of strong covering power by the way that protection interval is arranged, to ensure that being properly received for the subframe of weak covering power.
It is apparent to those skilled in the art that for convenience and simplicity of description, the device of foregoing description and the specific work process of module can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
In several embodiments provided herein, it should be understood that revealed device and method may be implemented in other ways.Such as, the apparatus embodiments described above are merely exemplary, such as, the division of the module, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple module or components can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed mutual coupling, direct-coupling or communication connection can be through some interfaces, the indirect coupling or communication connection of device or module, can be electrical property, mechanical or other forms.
The module as illustrated by the separation member may or may not be physically separated, and the component shown as module may or may not be physical module, it can and it is in one place, or may be distributed on multiple network modules.Some or all of the modules therein can be selected to achieve the purpose of the solution of this embodiment according to the actual needs.
In addition, each functional module in each embodiment of the present invention can integrate in a processing module, it is also possible to modules and physically exists alone, can also be integrated in two or more modules in a module.Above-mentioned integrated module both can take the form of hardware realization, can also be realized in the form of software function module.
If the integrated module is realized and when sold or used as an independent product in the form of software function module, can store in a computer readable storage medium.Based on this understanding, substantially all or part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products technical solution of the present invention in other words, the computer software product is stored in a storage medium, it uses including some instructions so that a computer equipment (can be personal computer, server or the network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), the various media that can store program code such as magnetic or disk.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although the present invention is described in detail referring to the foregoing embodiments, those skilled in the art should understand that: it is still possible to modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；And these are modified or replaceed, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (14)
- A kind of data transmission method characterized by comprisingBase station generates subframe configuration information；When the base station according to the subframe configuration information determine the first subframe symbol covering power be greater than the second subframe symbol covering power when; the preceding n symbol of second subframe is set protection interval by the base station; first subframe is the previous subframe adjacent with second subframe, and the n is default value；The subframe configuration information is sent to user equipment (UE) by the base station, so that the UE receives data according to the subframe configuration information and the protection interval got.
- According to the method for claim 1; it is characterized in that; the subframe configuration information includes the CP duration of the CP duration of the symbol of the first subframe and the symbol of the second subframe; it is described when the base station according to the subframe configuration information determine the first subframe symbol covering power be greater than the second subframe symbol covering power when, the base station sets protection interval for the preceding n symbol of second subframe and includes:When the base station according to the CP duration of the CP duration of the symbol of first subframe and the symbol of the second subframe determine first subframe symbol covering power be greater than the second subframe symbol covering power when, the preceding n symbol of second subframe is set protection interval by the base station；The CP duration of the symbol of first subframe is greater than the CP duration of the symbol of the second subframe.
- Method according to claim 1 or 2, which is characterized in that the method also includes:The base station sends the first information, at least one described second subframe that the first information is used to that the UE to be notified to have the protection interval to the UE.
- Method according to claim 1 or 2, which is characterized in that the method also includes:The base station sends the second information to the UE, the duration of at least one second subframe and the protection interval that second information is used to that the UE to be notified to have the protection interval.
- A kind of data transmission method characterized by comprisingUser equipment (UE) receives the subframe configuration information that base station is sent, and the subframe configuration information is the subframe configuration information that base station generates；The UE receives data according to the subframe configuration information and the protection interval got; the protection interval be when the base station according to the subframe configuration information determine the first subframe symbol covering power be greater than the second subframe symbol covering power when, the base station sets the preceding n symbol of second subframe Protection interval made of setting, first subframe are the previous subframe adjacent with second subframe, and the n is default value.
- According to the method described in claim 5, it is characterized in that, the UE is included according to the subframe configuration information and the protection interval received data packet got:The UE receives the information for the protection interval that the base station is sent；The UE receives data according to the information of the subframe configuration information and the protection interval；Wherein, at least one described second subframe that the information of the protection interval is used to that the UE to be notified to have the protection interval; or, the duration of at least one second subframe and the protection interval that the information of the protection interval is used to that the UE to be notified to have the protection interval.
- According to the method described in claim 5, it is characterized in that, the UE is included according to the subframe configuration information and the protection interval received data packet got:When the UE carry out cell searching when, the UE according in cell searching primary synchronization signal and secondary synchronization signal determine the protection interval；The UE receives data according to the subframe configuration information and the protection interval.
- A kind of base station characterized by comprisingGeneration module, for generating subframe configuration information；Setup module; for when determining that the covering power of symbol of the first subframe is greater than the covering power of the symbol of the second subframe according to the subframe configuration information; protection interval is set by the preceding n symbol of second subframe; first subframe is the previous subframe adjacent with second subframe, and the n is default value；Sending module, for the subframe configuration information to be sent to user equipment (UE), so that the UE receives data according to the subframe configuration information and the protection interval got.
- Base station according to claim 8, it is characterized in that, the subframe configuration information includes the CP duration of the CP duration of the symbol of the first subframe and the symbol of the second subframe, the setup module, when covering power specifically for determining symbol that the covering power of the symbol of first subframe is greater than the second subframe when the CP duration according to the symbol of the CP duration and the second subframe of the symbol of first subframe, protection interval is set by the preceding n symbol of second subframe, wherein, the CP duration of the symbol of first subframe is greater than the CP duration of the symbol of the second subframe.
- Base station according to claim 8 or claim 9, which is characterized in that the sending module is also used to send the first information to the UE, between the first information is for notifying the UE to have the protection Every at least one described second subframe.
- Base station according to claim 8 or claim 9; it is characterized in that; the sending module is also used to send the second information to the UE, the duration of at least one second subframe and the protection interval that second information is used to that the UE to be notified to have the protection interval.
- A kind of user equipment (UE) characterized by comprisingFirst receiving module, for receiving the subframe configuration information of base station transmission, the subframe configuration information is the subframe configuration information that base station generates；Second receiving module; for receiving data according to the subframe configuration information and the protection interval got; the protection interval be when the base station according to the subframe configuration information determine the first subframe symbol covering power be greater than the second subframe symbol covering power when; protection interval made of the preceding n symbol of second subframe is arranged for the base station; first subframe is the previous subframe adjacent with second subframe, and the n is default value.
- UE according to claim 12, which is characterized in that second receiving module, specifically for receiving the information for the protection interval that the base station is sent；Data are received according to the information of the subframe configuration information and the protection interval；Wherein, at least one described second subframe that the information of the protection interval is used to that the UE to be notified to have the protection interval; or, the duration of at least one second subframe and the protection interval that the information of the protection interval is used to that the UE to be notified to have the protection interval.
- UE according to claim 12, which is characterized in that second receiving module, be specifically used for when carrying out cell searching, according in cell searching primary synchronization signal and secondary synchronization signal determine the protection interval；Data are received according to the subframe configuration information and the protection interval.
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| PCT/CN2016/100560 WO2018058367A1 (en) | 2016-09-28 | 2016-09-28 | Data transmission method, base station and user equipment |
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