CN101951639B - Data transmission method, terminal, base station and system - Google Patents
Data transmission method, terminal, base station and system Download PDFInfo
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- CN101951639B CN101951639B CN 201010270825 CN201010270825A CN101951639B CN 101951639 B CN101951639 B CN 101951639B CN 201010270825 CN201010270825 CN 201010270825 CN 201010270825 A CN201010270825 A CN 201010270825A CN 101951639 B CN101951639 B CN 101951639B
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Abstract
The embodiment of the invention provides a data transmission method, a terminal, a base station and a data transmission system. The method comprises the following steps of: receiving a data frame transmitted by the base station; and demodulating a data block carried in a remaining time-frequency resource when a first area in the data frame does not use all time-frequency resource and the remaining time-frequency resource in the first area carries the data block. The method of the embodiment fully utilizes the remaining time-frequency resource in the first area on the basis of not changing the original structure of the first area in the data frame, so that the time-frequency resource also can carry data information. Therefore, the throughput of a system is improved on the premise of keeping original coverage and demodulation performance.
Description
Technical field
The present invention relates to the communications field, especially relate to a kind of data transmission method, terminal, base station and system.
Background technology
existing worldwide interoperability for microwave access (Worldwide Interoperability for Microwave Access, WiMAX) adopt OFDM (Orthogonal Frequency Division Multiple Access, OFDMA) multiple access method, its scheduling resource is divided into time domain and two latitudes of frequency domain, wherein on time domain take OFDMA symbol (OFDMA symbol) as unit, such as the frame length of 5ms can take 47 symbol on time domain, frequency domain is take subchannel (subchannel) as unit, the size of subchannel depends on different band width configuration, 10M bandwidth for example, remove restriction and the pilot sub-carrier of protection subcarrier, descendingly generally be divided into 30 subchannel, uply be divided into 35 subchannel.Consider that WiMAX is generally with time division duplex (Time Division Duplexing, TDD) duplex mode is main, its time domain need be distinguished uplink and downlink, the ratio of the symbol that namely in 47 symbol, uplink and downlink take is 29: 18 (i.e. 29 downlink OFDMA symbols, 18 upgoing O FDMA symbols), in this application, downlink data transmission in WiMAX only is discussed.
be illustrated in figure 1 as a downlink data frame structure schematic diagram in existing WiMAX system, this downlink data frame is by base station (base station, BS) construct and be handed down to terminal, this downlink data frame comprises 29 symbol (0-28) on time domain, and comprise 30 subchannel (0-29) on frequency domain, as seen from Figure 1, this downlink data frame specifically can comprise four zones: introduction (preamble) and zone (Zone) 1-3, wherein preamble occupies 0 symbol and 0-29 subchannel, Zone1 occupies 1-8 symbol and 0-9 subchannel, Zone2 occupies 9-18 symbol and 0-29 subchannel, Zone3 occupies 19-28 symbol and 0-29 subchannel.
Above-mentioned Zone1 can comprise again 3 parts: frame control head (the Frame Control Header of section, FCH), downlink resource map information (Downlink Map, DL-MAP) and data block (burst), wherein FCH is used to indicate length scale, modulation coding mode of the frequency domain information of the Zone that DL-MAP carries and DL-MAP etc.; DL-MAP is used to indicate the time-domain information of Zone and the Time-Frequency Information of indication burst; Burst is used for the data message that carrying BS is handed down to terminal.
In prior art, first indicated regional frequency domain information of FCH generally only takies the parton channel, such as 0-9 ten sub-channels in Fig. 1, although this design can make the FCH of BS adjacent sectors, DL-MAP signaling stagger, thereby reduce disturbance, also can converge power, improve covering and the demodulation performance of FCH, DL-MAP, but this has caused also running time-frequency resource corresponding to remaining 20 sub-channels to have waste (in Fig. 1 shown in dash area).
Summary of the invention
The embodiment of the present invention provides a kind of data transmission method, terminal, base station and system, be used for to reduce the wasting of resources of WiMAX system downlink data frame, improves the throughput of whole WiMAX system.
On the one hand, the embodiment of the present invention provides a kind of data transmission method, and the method comprises: receive the Frame that the base station issues; Whole running time-frequency resources are not used in first zone in described Frame, and have carried in the situation of data block in residue running time-frequency resource corresponding to described first zone, the data block of carrying in the residue running time-frequency resource in demodulation described first zone.
On the other hand, the embodiment of the present invention also provides a kind of terminal, and this terminal comprises: receiving element is used for receiving the Frame that the base station issues; Demodulating unit is used for not used whole running time-frequency resources in described Frame first zone, and has carried in the situation of data block in the residue running time-frequency resource in described first zone, the data block of carrying in the residue running time-frequency resource in demodulation described first zone.
On the other hand, the embodiment of the present invention also provides a kind of base station, comprise: the Frame structural unit, be used for the Frame that structure is handed down to terminal, comprise data block in the residue running time-frequency resource in first zone of described Frame, and described Frame comprises the relevant information of the data block resource location of living in that comprises in the residue running time-frequency resource that is used to indicate first zone correspondence in described Frame, and perhaps described Frame comprises the relevant information of the data block resource location of living in that comprises in the residue running time-frequency resource that is used to indicate first zone correspondence in next Frame; Issue the unit, be used for described Frame is handed down to terminal.
On the other hand, the embodiment of the present invention also provides a kind of data transmission system, comprises terminal as above and base station.
On the basis of the embodiment of the present invention first regional original structure in not changing Frame, take full advantage of the residue running time-frequency resource in first zone, make this running time-frequency resource also can carry data message, thereby promoted the throughput of system on the prerequisite that keeps original covering and demodulation performance.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, during the below will describe embodiment, the accompanying drawing of required use is done to introduce simply, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is a downlink data frame structure schematic diagram in existing WiMAX system;
The schematic flow sheet of a kind of data transmission method that Fig. 2 provides for the embodiment of the present invention;
A kind of data frame structure schematic diagram that the base station that Fig. 3 provides for the embodiment of the present invention issues;
The schematic flow sheet of the another kind of data transmission method that Fig. 4 provides for the embodiment of the present invention;
The schematic flow sheet of the another kind of data transmission method that Fig. 5 provides for the embodiment of the present invention;
The structural representation of a kind of terminal that Fig. 6 provides for the embodiment of the present invention;
Figure 7 shows that the structural representation of the another kind of terminal that the embodiment of the present invention provides;
Figure 8 shows that the structural representation of the another kind of terminal that the embodiment of the present invention provides;
Figure 9 shows that the structural representation of a kind of base station that the embodiment of the present invention provides;
The structural representation of the data transmission system that Figure 10 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Be illustrated in figure 2 as the schematic flow sheet of a kind of data transmission method that the embodiment of the present invention provides, the present embodiment is that the method comprises the steps: from the explanation made for the present invention of the angle of terminal
S201: receive the Frame that the base station issues.
S202: first zone (Zone1) do not use whole running time-frequency resources in described Frame, and carried in the situation of data block in the residue running time-frequency resource of described Zone1, the data block of carrying in the residue running time-frequency resource of the described Zone1 of demodulation.In embodiments of the present invention, the residue running time-frequency resource of Zone1 refers to such time-frequency region: the time domain scope of time domain scope and Zone1 is identical, the frequency domain scope is to remove remaining frequency domain after the frequency domain scope that Zone1 uses, such as part shown in dash area in Fig. 1.
The purpose of the embodiment of the present invention is to improve the resource utilization of downlink data frame, therefore when Zone1 in Frame has used whole running time-frequency resource, resource utilization has reached maximum, need not recycle the present invention improves, be that the present invention only is applied to that in Frame, Zone1 does not use whole running time-frequency resources, and carried in the situation of data block in the residue running time-frequency resource of this Zone1.
A kind of data frame structure schematic diagram that the base station that being illustrated in figure 3 as the embodiment of the present invention provides issues, for convenience of description, in the present embodiment and following enforcement all with symbol (x1, x2), subchannel (y1, y2) represent the resource units of two dimension in Frame, wherein x1 represents the time domain original position of this resource units in Frame, x2 represents the time domain final position of this resource units in Frame, y1 represents the frequency domain original position of this resource units in Frame, and y2 represents the frequency domain final position of this resource units in Frame.Because Zone1 has in embodiments of the present invention only used the part running time-frequency resource, therefore the base station is in the construction data frame, can partly add data block at the residue running time-frequency resource, such as the symbol (1 in Fig. 3,4), subchannel (14,18) then zone can in the residing position of this data block of the DL_MAP of Zone1 indicating, make terminal can remove to remain according to this indication the corresponding position demodulating data of running time-frequency resource.Such as, can indicate this data block residing position according to the downlink resource map information in DL_MAP indication (DL-MAP_IE), when being used to refer to the data block present position, can use DL-MAP_IE following four fields:: connection identifier (Connect Identification, CID) field, time domain starting point (symbol offset) field, time domain size (symbol number) field, frequency domain starting point (subchannel offset) field and frequency domain size (subchannel number) field.Wherein the CID field can be indicated the data that comprised which specific user in current data block, and symbol offset field, symbol number field, subchannel offset field and subchannel number field combine the position that just can indicate current data block.Then by resolving DL-MAP_IE, can find that in Fig. 3, data block symbol (Isosorbide-5-Nitrae), subchannel (14,18) are arranged in the residue running time-frequency resource.
On the basis of the embodiment of the present invention first regional original structure in not changing Frame, take full advantage of the residue running time-frequency resource in first zone, make this running time-frequency resource also can carry data message, thereby promoted the throughput of system on the prerequisite that keeps original covering and demodulation performance.
Be illustrated in figure 4 as the schematic flow sheet of the another kind of data transmission method that the embodiment of the present invention provides, the method comprises the steps:
S401: receive the Frame that the base station issues.
Each base station can corresponding specific sector when networking, this sector can base station location number, the form of sector number (Cell ID, Segment) represents, the base station can Preamble specific according to the Segment information structuring, and constructs and issue FCH according to Segment information at the ad-hoc location of Frame.
In the present embodiment, terminal can scan by the frequency point information of its configuration, thereby the preamble of capture-data frame also carries out frame synchronization, then terminal can get cell ID and the Segment information of sector corresponding to base station from preamble, then again according to the Segment acquisition of information to FCH the position in Frame.
S402: judge in described Frame, whether Zone1 has used whole running time-frequency resources, if Zone1 has used whole running time-frequency resources, according to the data in this Frame of normal mode demodulation, if Zone1 does not use whole running time-frequency resources, enter step S403.
As one embodiment of the present of invention, terminal can realize above-mentioned judgement by the Bitmap field that detects in FCH, if each in the Bitmap field in described frame control head section is all 1, in described Frame, Zone1 has used whole running time-frequency resources; If have at least one not to be 1 in the Bitmap field in described frame control head section, in described Frame, Zone1 does not use whole running time-frequency resources.This is the number of subchannels of having indicated Zone1 to use due to the Bitmap field, such as this downlink data frame of hypothesis has 30 subchannel, 6 bit positions of Bitmap field represent respectively subchannel group0-subchannel group5, and subchannel group0-subchannel group5 represents respectively 6,4,6,4,6,4 subchannel, only need judge that whether the Bitmap field is all 1 to get final product, as long as be not all 1, can the specified data frame in Zone1 only used the part running time-frequency resource.
S403: the information that the residue running time-frequency resource of buffer memory Zone1 carries, this information comprises described data block.
As one embodiment of the present of invention, the information that terminal can in DL-MAP, the residue running time-frequency resource of buffer memory Zone1 carries in resolving Zone1.Such as take Fig. 3 as example, suppose that S402 detect to find that in frame control head section, the Bitmap field is designated as 110000, represent that namely Zone1 has taken subchannel group0 and subchannel group1, be that Zone1 has taken 10 sub-channels, its frequency domain resource that takies is 0-9subchannel, and the residue frequency domain resource in Zone1 is 10-29subchannel as can be known.
Terminal is when resolving DL-MAP, position due to DL-MAP in time domain is symbol (1,2) thus terminal can buffer memory symbol (1,2) information that the running time-frequency resource that, subchannel (10-29) is corresponding carries, in addition due in Fig. 3 in DL-MAP because its magnitude relationship also folds to symbol (3,4), so the terminal information that also needs the running time-frequency resource of buffer memory symbol (3,4), subchannel (10-29) to carry.And then, when the Zone transitional information of terminal in parsing DL-MAP indicated (STC_DL_Zone_IE), it can learn that the maximum figure of Zone1 on time domain is 9 symbol, therefore, the information that terminal needs the running time-frequency resource of further buffer memory symbol (5,8), subchannel (10-29) to carry.DL-MAP can indicate the scope of each Zone on time domain by " OFDMA symbol offset " field in continuous STC_DL_Zone_IE, and such as can be designated as respectively with " the OFDMA symbol offset " field in continuous two STC_DL_Zone_IE 9, the 19 time domain scopes of distinguishing each Zone in this Frame in Fig. 3: Zone1 is that 0-8symbol, Zone2 are that 9-18symbol and Zone3 are 19-28symbol.
S404: obtain DL-MAP_IE, this DL-MAP_IE is used to indicate the position of downlink resource corresponding to the data block of carrying in the residue running time-frequency resource in first zone in described Frame.Explanation about DL-MAP_IE can be referring to previous embodiment.
S405: the data block of carrying in the described residue running time-frequency resource of resource location demodulation from the information of step 403 buffer memory according to described DL-MAP_IE indication.
On the basis of the embodiment of the present invention first regional original structure in not changing Frame, take full advantage of the residue running time-frequency resource in first zone, make this running time-frequency resource also can carry data message, thereby promoted the throughput of system on the prerequisite that keeps original covering and demodulation performance.
Be illustrated in figure 5 as the schematic flow sheet of the another kind of data transmission method that the embodiment of the present invention provides, the method comprises the steps:
S501: receive the Frame that the base station issues.
S502: judge in described Frame, whether Zone1 has used whole running time-frequency resources, if Zone1 has used whole running time-frequency resources, according to the data in this Frame of normal mode demodulation, if Zone1 does not use whole running time-frequency resources, enter step S503.
S503: the information that the residue running time-frequency resource of buffer memory Zone1 carries, this information comprises described data block.
S401-S403 in S501-S503 and above-described embodiment is similar, no longer gives unnecessary details at this.
S504: the data block of carrying in the described residue running time-frequency resource of resource location demodulation from the information of buffer memory indicated according to the DL-MAP_IE of a upper Frame of storage, described DL-MAP_IE is used to indicate the position of downlink resource corresponding to the data block of carrying in the residue running time-frequency resource in first zone in described Frame.
the present embodiment and Fig. 4 the difference of corresponding embodiment be: the present embodiment is not to indicate the position of data block in the residue running time-frequency resource according to the DL-MAP_IE in the Frame of current reception, but indicate by the DL-MAP_IE in a upper Frame of storage, be the base station a upper Frame in advance the Frame of current reception in the residue running time-frequency resource position of data block send to terminal, then corresponding data is put in this position in the base station when the construction data frame, make terminal after receiving Frame, can be directly according to this position demodulation corresponding data that is indicated to of DL-MAP_IE in a upper Frame.
It is pointed out that in adopting the mode of this demodulation in advance, the DL-MAP_IE of the upper Frame that the base station need to be stored according to terminal when the construction data frame determines the scope of Zone.Such as, the DL-MAP_IE of a upper Frame of terminal buffers is 3, be respectively symbol (1 on its time domain, 5), symbol (3,6), symbol (5,8),, the base station is when the construction data frame, and corresponding " the OFDMA symbol offset " field of its first STC_DL_Zone_IE must be greater than 8, namely must greater than in DL-MAP_IE on time domain maximum numerical value; Be respectively on its frequency domain (10,13), (17,25), (15,18), the indicated subchannel of the FCH of Frame necessarily can not comprise the interval of (10,25).
S505: store the DL-MAP_IE in described Frame, described DL-MAP_IE is used to indicate resource location corresponding to data block that carries in the residue running time-frequency resource of first area in next Frame.
Also can indicate according to the DL-MAP_IE of Frame the data block of carrying in the residue running time-frequency resource in next Frame of demodulation in order to make terminal, therefore terminal is when resolving the DL-MAP of current data frame, needs the DL-MAP_IE that this is used to indicate resource location corresponding to the data block of carrying in the residue running time-frequency resource in next Frame to store.
The embodiment of the present invention is from the different of the corresponding embodiment of Fig. 4, the terminal of the embodiment of the present invention only is positioned at residue during running time-frequency resource at the indicated resource location of the DL-MAP_IE of a upper Frame, information that just need to the residue running time-frequency resource in first zone of buffer memory carries in this frame.Therefore not only can take full advantage of the residue running time-frequency resource in first zone, make this running time-frequency resource also can carry data message, thereby promoted the throughput of system on the prerequisite that keeps original covering and demodulation performance, but also can reduce the processing load of terminal.
Be illustrated in figure 6 as the structural representation of a kind of terminal that the embodiment of the present invention provides, this terminal comprises receiving element 610 and demodulating unit 620, and wherein receiving element 610 is connected with demodulating unit 620.
Receiving element 610 is used for receiving the Frame that the base station issues.
The purpose of the embodiment of the present invention is to improve the resource utilization of downlink data frame, therefore when Zone1 in Frame has used whole running time-frequency resource, resource utilization has reached maximum, need not recycle the present invention improves, be that the present invention only is applied in Frame first zone and does not use whole running time-frequency resources, and carried in the situation of data block in the residue running time-frequency resource in this first zone.
Because Zone1 has in embodiments of the present invention only used the part running time-frequency resource, therefore the base station is in the construction data frame, can partly add data block at the residue running time-frequency resource, such as the symbol (1 in Fig. 3,4), subchannel (14,18) then zone can in the residing position of this data block of the DL_MAP of Zone1 indicating, make terminal can remove to remain according to this indication the corresponding position demodulating data of running time-frequency resource.Such as, can indicate according to the DL-MAP_IE in DL_MAP the residing resource location of this data block.Demodulating unit 620 comes demodulation to remain the data block of carrying in running time-frequency resource according to the indication of DL-MAP_IE again.
On the basis of the embodiment of the present invention first regional original structure in not changing Frame, take full advantage of the residue running time-frequency resource in first zone, make this running time-frequency resource also can carry data message, thereby promoted the throughput of system on the prerequisite that keeps original covering and demodulation performance.
Be illustrated in figure 7 as the structural representation of the another kind of terminal that the embodiment of the present invention provides, this terminal comprises receiving element 710, judging unit 720 and demodulating unit 730, and judging unit 720 is connected with receiving element 710 and demodulating unit 730 respectively, wherein judging unit 720 comprises again detection module 721 and judge module 722, and demodulating unit 730 comprises again the first cache module 731, acquisition module 732 and the first demodulation module 733.
Receiving element 710 is used for receiving the Frame that the base station issues.
Detection module 721 is for detection of the frame control head section of described Frame, if judge module 722 be used in Bitmap field that detection module 721 detects frame control head section each be all 1, judge that in Frame, Zone1 has used whole frequency domain resource; If have at least one not to be 1 in the Bitmap field in described frame control head section, in described Frame, Zone1 does not use whole running time-frequency resources.
The information that the residue running time-frequency resource that the first cache module 731 is used for buffer memory Zone1 carries, this information comprises the data block of carrying in the residue time-frequency.In the present embodiment, the information that the first cache module 731 can in DL-MAP, the residue running time-frequency resource of buffer memory Zone1 carries in resolving Zone1.Concrete caching method can referring to the description in Fig. 4 corresponding method embodiment, not repeat them here.
Acquisition module 732 is used for obtaining DL-MAP_IE, and this DL-MAP_IE is used to indicate the position of downlink resource corresponding to the data block of carrying in first zone residue running time-frequency resource in Frame.Terminal is after the information that the residue running time-frequency resource of the first cache module 731 complete Zone1 of buffer memory carries, and its acquisition module 732 can continue to resolve DL-MAP to get DL-MAP_IE.DL-MAP_IE is resource location corresponding to data block that is used to refer in Zone1-Zone3, such as the burst1 in Zone1, burst2, in embodiments of the present invention, because BS residue running time-frequency resource at Zone1 in the construction data frame has been put into data block, so DL-MAP_IE also is used to refer to the resource location of data block in this residue running time-frequency resource.Specifically, DL-MAP_IE can come by following field the resource location of designation data piece: CID field, symbol offset field, symbol number field, subchannel offset field and subchannel number field.
The first demodulation module 733 is used for remaining the respective data blocks of carrying in running time-frequency resource according to the resource location demodulation of DL-MAP_IE indication.
It is pointed out that the judged result when judge module 722 is when entirely being 1, when namely in Frame, Zone1 had used whole frequency domain resource, the first 733 of demodulation modules need got final product according to data in normal this Frame of mode demodulation.
On the basis of the embodiment of the present invention first regional original structure in not changing Frame, take full advantage of the residue running time-frequency resource in first zone, make this running time-frequency resource also can carry data message, thereby promoted the throughput of system on the prerequisite that keeps original covering and demodulation performance.
Be illustrated in figure 8 as the structural representation of the another kind of terminal that the embodiment of the present invention provides, this terminal comprises receiving element 810, judging unit 820 and demodulating unit 830, and judging unit 820 is connected with receiving element 810 and demodulating unit 830 respectively, wherein judging unit 820 comprises again detection module 821 and judge module 822, and demodulating unit 830 comprises again the second cache module 831, the second demodulation module 832 and memory module 833.
In the present embodiment, the corresponding units in the corresponding embodiment of receiving element 810 and judging unit 820 and Fig. 7 is similar, no longer gives unnecessary details at this.
The information that the residue running time-frequency resource that the second cache module 831 is used for buffer memory Zone1 carries.
The second demodulation module 832 is used for the data block that the resource location indicated according to the DL-MAP_IE of a upper Frame of storage carries in the residue running time-frequency resource of the described Frame of information demodulation of described the second cache module 831 buffer memorys, described DL-MAP_IE is the DL-MAP_IE in a upper Frame, is used to indicate the position of downlink resource corresponding to the data block of carrying in the residue running time-frequency resource in first zone in the Frame of current reception.
the present embodiment and Fig. 7 the difference of corresponding embodiment be: the present embodiment is not to indicate the position of the data block of carrying in the residue running time-frequency resource according to the DL-MAP_IE in the Frame of current reception, but indicate by the DL-MAP_IE in a upper Frame of buffer memory, the position of the data block that to be the base station carry in the residue running time-frequency resource in advance the Frame of current reception at a upper Frame sends to terminal, then corresponding data is put in this position in the base station when the construction data frame, make terminal after receiving Frame, its second demodulation module 832 can be directly according to this position demodulation corresponding data that is indicated to of DL-MAP_IE in a upper Frame.
It is pointed out that in adopting the mode of this demodulation in advance, the scope of Zone need to be determined according to the DL-MAP_IE of the upper Frame of terminal institute buffer memory in the base station when the construction data frame.Specifically see also the description in the corresponding embodiment of Fig. 5.
Remain the data block of carrying in running time-frequency resource in next Frame of demodulation in order to make terminal also can indicate according to the DL-MAP_IE of Frame, so terminal need to be stored by 833 couples of DL-MAP_IE of memory module when the DL-MAP of resolution data frame.
The terminal of the embodiment of the present invention only is equipped with at the indicated resource-niche of the DL-MAP_IE of a upper Frame and is positioned at residue during running time-frequency resource, information that just need to the residue running time-frequency resource in first zone of buffer memory carries in this frame.Therefore not only can take full advantage of first regional corresponding residue running time-frequency resource, make this running time-frequency resource also can carry data message, thereby promoted the throughput of system on the prerequisite that keeps original covering and demodulation performance, but also can reduce the processing load of terminal.
Be illustrated in figure 9 as the structural representation of a kind of base station that the embodiment of the present invention provides, this base station comprises Frame structural unit 901 and issues unit 902, wherein:
Frame structural unit 901 is used for the Frame that structure is handed down to terminal, comprise data block in the residue running time-frequency resource in first zone of described Frame, and described Frame comprises the relevant information of the data block resource location of living in that comprises in the residue running time-frequency resource that is used to indicate first zone in described Frame, and perhaps described Frame comprises the relevant information of the data block resource location of living in that comprises in the residue running time-frequency resource that is used to indicate first zone in next Frame.
As one embodiment of the present of invention, above-mentioned relevant information comprises the four-dimensional sign of resource: time domain starting point, time domain size, frequency domain starting point and frequency domain size, this relevant information can be carried in DL-MAP_IE.
On the basis of the embodiment of the present invention first regional original structure in not changing Frame, take full advantage of the residue running time-frequency resource in first zone, make this running time-frequency resource also can carry data message, thereby promoted the throughput of system on the prerequisite that keeps original covering and demodulation performance.
The structural representation of the data transmission system that provides for the embodiment of the present invention as shown in figure 10, this system comprises base station 1001 and terminal 1002, wherein terminal 1002 can comprise the arbitrary described terminal of Fig. 6-Fig. 8, and the base station can comprise base station as described in Figure 9.
In downlink data transmission, base station 1001 is used for the construction data frame, and this Frame is handed down to terminal 1002, comprise data block in the residue running time-frequency resource of the Zone1 of this Frame, and this Frame comprises the relevant information that is used to indicate data block resource location of living in.
Different demodulation modes for terminal 1002, base station 1001 is also difference to some extent when the construction data frame, when being as shown in Figure 7 terminals when terminal 902, base station 1001 is when the construction data frame, need to remain in running time-frequency resource in Zone1 and put into data block, and the position indication information of this data block is put into Frame; And when terminal 902 is as shown in Figure 8 terminal, base station 1001 is when the construction data frame, only need to remain in running time-frequency resource in Zone1 and put into data block, and do not need to put into the position indication information of this data block, this position indication information is placed in a Frame, is the position indication information of data block in the residue running time-frequency resource in next Frame and Frame is deposited.
On the basis of the embodiment of the present invention first regional original structure in not changing Frame, take full advantage of the residue running time-frequency resource in first zone, make this running time-frequency resource also can carry data message, thereby promoted the throughput of system on the prerequisite that keeps original covering and demodulation performance.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above is only specific embodiments of the invention; the protection range that is not intended to limit the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. a data transmission method, is characterized in that, described method comprises:
Receive the Frame that the base station issues;
Judge in described Frame, whether first zone has used whole running time-frequency resources, wherein, judge in described Frame, whether first zone has used whole running time-frequency resources to comprise:
Detect the frame control head section of described Frame, if each in the Bitmap field in described frame control head section is all 1, in described Frame, whole running time-frequency resources have been used in first zone; If have at least one not to be 1 in the Bitmap field in described frame control head section, in described Frame, whole running time-frequency resources are not used in first zone;
Whole running time-frequency resources are not used in first zone in described Frame, and have carried in the situation of data block in the residue running time-frequency resource in described first zone, the data block of carrying in the residue running time-frequency resource according to described first zone of indication demodulation;
The data block of carrying in described residue running time-frequency resource according to described first zone of indication demodulation comprises:
The information that the residue running time-frequency resource in described first zone of buffer memory carries, this information comprises described data block;
Obtain downlink resource map information indication DL-MAP_IE, described DL-MAP_IE is used to indicate resource location corresponding to data block that carries in the residue running time-frequency resource in first zone in described Frame;
The data block of carrying in the described residue running time-frequency resource of resource location demodulation from the information of described buffer memory according to described DL-MAP_IE indication,
Or the information that in the described Frame of buffer memory, the residue running time-frequency resource in first zone carries, this information comprises described data block;
The data block of carrying in the described residue running time-frequency resource of resource location demodulation from the information of described buffer memory indicated according to the downlink resource map information indication DL-MAP_IE of a upper Frame of storing, described DL-MAP_IE is used to indicate resource location corresponding to data block that carries in the residue running time-frequency resource in first zone in described Frame;
Store the DL-MAP_IE in described Frame, described DL-MAP_IE is used to indicate resource location corresponding to data block that carries in the residue running time-frequency resource of first area in next Frame.
2. the method for claim 1, is characterized in that, the information that the residue running time-frequency resource in described buffer memory described first zone carries comprises:
The information that in DL-MAP, the residue running time-frequency resource in described first zone of buffer memory carries in resolving described first zone.
3. a terminal, is characterized in that, described terminal comprises:
Judging unit is used for judging whether described Frame first zone has used whole running time-frequency resources, and wherein, judging unit specifically is used for:
Detect the frame control head section of described Frame, if in the Bitmap field in described frame control head section
Each is all 1, and in described Frame, whole running time-frequency resources have been used in first zone; If the institute
State in the Bitmap field in frame control head section and have at least one not to be 1, in described Frame first
Whole running time-frequency resources are not used in individual zone;
Receiving element is used for receiving the Frame that the base station issues;
Demodulating unit, be used for not using whole running time-frequency resources in described Frame first zone, and carried in the situation of data block the data block of carrying in the residue running time-frequency resource according to described first zone of indication demodulation in the residue running time-frequency resource in described first zone;
Described demodulating unit comprises: the first cache module, be used for the information that the residue running time-frequency resource in buffer memory described first zone carries, and this information comprises described data block;
Acquisition module is used for obtaining downlink resource map information indication DL-MAP_IE, and described DL-MAP_IE is used to indicate the resource location of the data block of carrying in the residue running time-frequency resource in first zone in described Frame;
The first demodulation module is used for the data block of carrying in the described residue running time-frequency resource of the information demodulation of described the first cache module buffer memory according to the resource location of described DL-MAP_IE indication,
Or described demodulating unit comprises:
The second cache module is used for the information that the residue running time-frequency resource in the described Frame of buffer memory first zone carries;
The second demodulation module, be used for indicating the data block of carrying in the indicated described residue running time-frequency resource of resource location demodulation of DL-MAP_IE according to the downlink resource map information of a upper Frame of storing, described DL-MAP_IE is used to indicate resource location corresponding to data block that carries in the residue running time-frequency resource in first zone in described Frame;
Memory module is stored the DL-MAP_IE in described Frame, and described DL-MAP_IE is used to indicate resource location corresponding to data block that carries in the residue running time-frequency resource of first area in next Frame.
4. terminal as claimed in claim 3, is characterized in that, described judging unit comprises:
Detection module is for detection of the frame control head section of described Frame;
Judge module if each that is used in Bitmap field that detection module detects described frame control head section is all 1, judges that in described Frame, whole running time-frequency resources have been used in first zone; If have at least one not to be 1 in the Bitmap field in described frame control head section, in described Frame, whole running time-frequency resources are not used in first zone.
5. terminal as claimed in claim 3, is characterized in that, described the first cache module specifically is used for:
The information that in DL-MAP, the residue running time-frequency resource in described first zone of buffer memory carries in resolving described first zone.
6. a data transmission system, is characterized in that, comprises described terminal as arbitrary in claim 3-5.
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| ES2843548T3 (en) | 2015-11-06 | 2021-07-19 | Huawei Tech Co Ltd | LAA-LTE system, terminal and base station data transmission method |
| CN106937394B (en) * | 2015-12-29 | 2023-02-03 | 华为技术有限公司 | Downlink data transmission method and device |
| CN109561433B (en) | 2016-08-10 | 2020-03-20 | 华为技术有限公司 | Data channel sending and receiving method, network equipment and terminal |
| CN107889240B (en) * | 2016-09-30 | 2020-07-24 | 华为技术有限公司 | Data transmission method and equipment |
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| CN101102298A (en) * | 2006-07-06 | 2008-01-09 | 华为技术有限公司 | Use method and system of partial bandwidth in multi-carrier transmission system |
| CN101282165A (en) * | 2007-04-04 | 2008-10-08 | 华为技术有限公司 | Method and system for resource allocation of downlink frame data |
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| CN101102298A (en) * | 2006-07-06 | 2008-01-09 | 华为技术有限公司 | Use method and system of partial bandwidth in multi-carrier transmission system |
| CN101282165A (en) * | 2007-04-04 | 2008-10-08 | 华为技术有限公司 | Method and system for resource allocation of downlink frame data |
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