CN101521538A - Method and communication equipment for supporting relay transmission - Google Patents
Method and communication equipment for supporting relay transmission Download PDFInfo
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- CN101521538A CN101521538A CN 200810009361 CN200810009361A CN101521538A CN 101521538 A CN101521538 A CN 101521538A CN 200810009361 CN200810009361 CN 200810009361 CN 200810009361 A CN200810009361 A CN 200810009361A CN 101521538 A CN101521538 A CN 101521538A
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Abstract
The embodiment of the invention discloses a method for supporting relay transmission, comprising the following steps: in a long-term evolution (LTE) system, communication equipment carries out data transmission according to an LTE TDD wireless frame; and the LTE TDD wireless frame comprises different zones, wherein each zone occupies one or more sub-frames. By the proposal provided by the embodiment of the invention, when the communication equipment carries out data transmission, the LTE TDD wireless frame comprises different zones and each zone occupies one or more sub-frames, namely, the sub-frame is taken as cycle, thus realizing the compatibility with the LTE TDD frame structure of the existing LTE system and supporting relay transmission. The LTE TDD frame structure (10ms) provided by the embodiment of the invention considers the compatibility with the LTE system and also meets the flexibility of the relay application.
Description
Technical field
The present invention relates to wireless communication technology field, particularly a kind of method and communication equipment of supporting relay transmission.
Background technology
Along with express network technology and development of multimedia technology, undergoing an unusual development of wireless network is swift and violent, and the development trend of wireless network evolves to packet switching from circuit switching gradually, and various WiMAX access technologies emerge in an endless stream.Relaying technique is one of key technology of B3G/4G system, can improve cell throughout by relay station, increases the sub-district and covers, and reduces operator and builds wireless network cost and operation cost.As shown in Figure 1, the existing wireless access network network contains base station controller, 3 kind of means such as traditional base station and conventional terminal.Base station controller communicates with the transmission network by special use between traditional base station, generally connects by wired.
As shown in Figure 2, based on existing wireless communication system, a kind of wireless communication system based on RS (Relay Station, relay station) has been proposed.By original base station being carried out certain modification and introducing the coverage that new relay station improves the base station.Contain 4 kind of means in the system: base station controller, base station, relay station, terminal.
At the LTE of up-to-date announcement TDD (Long Term Evolution Time Division Duplex, long-term advancing time division duplex) in the frame structure, each radio frames comprises two fields (half-frame), each field comprises the subframe (subframe) of 5 1ms again, each subframe can be divided into common time slot (slot) or 3 special time slot: DwPTS (Downlink Pilot Time Slot of two 0.5ms again, descending pilot frequency time slot), GP (Gap, at interval) and UpPTS (Uplink Pilot Time Slot, uplink pilot time slot).As shown in Figure 3, be a field structure in the LTE tdd frame structure of 5ms, wherein first subframe must be a descending sub frame, and the 3rd subframe must be sub-frame of uplink.As shown in Figure 4, be the LTE tdd frame structure of 10ms.
Frame structure at Fig. 3 and Fig. 4, nontransparent relaying tdd frame structure and transparent relay tdd frame structure that prior art proposes, but these frame structures are primarily aimed at type 2 frame structures of original LTE TDD has added support to relay station, can not with the LTE tdd frame structure compatible of up-to-date announcement, and do not support the frame structure of the 10ms that prior art proposes yet.
Summary of the invention
The embodiment of the invention provides a kind of method, apparatus and system of supporting relay transmission, with the LTE TDD radio frames compatibility in realization and the LTE system.
For achieving the above object, the embodiment of the invention provides a kind of method of supporting relay transmission on the one hand, comprising: in Long Term Evolution LTE system, communication equipment carries out transfer of data according to LTE TDD radio frames; Described LTE TDD radio frames comprises different zones, and each zone takies one or more subframes.
On the other hand, the embodiment of the invention also provides a kind of communication equipment, comprising: transport module, be used for system at Long Term Evolution LTE, and carry out transfer of data according to LTE TDD radio frames; Described LTE TDD radio frames comprises different zones, and each zone takies one or more subframes.
Compared with prior art, the embodiment of the invention has the following advantages: the scheme that provides by the embodiment of the invention, communication equipment is when carrying out transfer of data, comprised different zones in the LTE TDD radio frames of institute's basis, and each zone takies one or more subframes, be the cycle promptly, realized LTE tdd frame structure compatible with prior LTE system with the subframe.
Description of drawings
Fig. 1 is the schematic diagram of prior art legacy wireless communication system framework;
Fig. 2 is the schematic diagram of the wireless communication system framework of prior art relay station;
Fig. 3 is the schematic diagram of the LTE tdd frame structure of prior art 5ms;
Fig. 4 is the schematic diagram of the LTE tdd frame structure of prior art 10ms;
Fig. 5 is a frame structure schematic diagram of supporting a kind of radio frames of nontransparent relaying in the embodiment of the invention one;
Fig. 6 is a frame structure schematic diagram of supporting a kind of radio frames of transparent relay in the embodiment of the invention one;
Fig. 7 is a frame structure schematic diagram of supporting a kind of radio frames of nontransparent relaying in the embodiment of the invention two;
Fig. 8 is a frame structure schematic diagram of supporting a kind of radio frames of transparent relay in the embodiment of the invention two;
Fig. 9 is a frame structure schematic diagram of supporting a kind of radio frames of nontransparent relaying in the embodiment of the invention three;
Figure 10 is a frame structure schematic diagram of supporting a kind of radio frames of transparent relay in the embodiment of the invention three;
Figure 11 is a frame structure schematic diagram of supporting a kind of radio frames of nontransparent relaying in the embodiment of the invention four;
Figure 12 is a frame structure schematic diagram of supporting a kind of radio frames of transparent relay in the embodiment of the invention four.
Embodiment
The embodiment of the invention provides a kind of method of supporting relay transmission, and in the LTE system, communication equipment carries out the relay transmission of data according to LTE TDD radio frames, and this LTE TDD radio frames comprises different zones, and each zone takies one or more subframes.The radio frames that the embodiment of the invention proposes comprises the radio frames of the affiliated terminal of base station, relay station and relay station, thereby makes the affiliated terminal of base station, relay station and relay station can carry out the relay transmission of data according to this LTE TDD radio frames.
In the frame structure of the LTE TDD radio frames that the embodiment of the invention proposes, insert the district and refer to that base station or relay station communicate by letter with terminal (except the affiliated terminal of relay station) in this accesss district; Relay area is meant the zone of communicating by letter with relay station in the base station; The mixed zone refer to the base station in this mixed zone simultaneously and relay station and terminal (under the relay station except the terminal) communicate by letter, so comprise in the mixed zone that relay area and access distinguish, wherein, the size of relay area, position and quantity can dispose.
The frame structure of the radio frames that the embodiment of the invention proposes can comprise descending access district, special time slot district, up mixed zone, up access district and downlink mixed area, and wherein each district takies one or more subframes.
In descending access district, the base station sends data to terminal (except the affiliated terminal of relay station); Terminal (except the affiliated terminal of relay station) receives the data that the base station sends, simultaneously, relay station to terminal under it send data (these data be relay station previous frame or on a field receive and the data of terminal under the relay station are planned to issue in the base station of buffer memory), terminal receives the data that relay station sends under the relay station.
In the DwPTS in special time slot district (Downlink Pilot Time Slot, descending pilot frequency time slot) zone, the base station sends downlink synchronous signal to terminal (except the affiliated terminal of relay station); Terminal (except the affiliated terminal of relay station) receives the signal that the base station sends, and simultaneously, relay station terminal under described relay station sends downlink synchronous signal, the signal that terminal reception relay station sends under the relay station; The GP in special time slot district (Guard Period, protection at interval) zone is the protection interval region, and base station and relay station can not send data; In the UpPTS in special time slot district (Uplink Pilot Time Slot, uplink pilot time slot) zone, terminal (except the affiliated terminal of relay station) sends uplink synchronizing signals to the base station; The signal that base station receiving terminal (except the affiliated terminal of relay station) sends, simultaneously, terminal sends uplink synchronizing signals to relay station under the relay station, and relay station receives the signal that the affiliated terminal of this relay station sends.
In up mixed zone, the base station receive self terminal (relay station under terminal except) data and from the data of relay station (these data be the base station previous frame or on a field receive and the relay station of buffer memory under terminal plan to issue the data of base station); In the frame structure of the radio frames of institute's foundation, RTG (Receive Transition Gap, reception/transmission conversion interval) is the change-over time of relay station from received signal to the transmission signal when relay station transmits data; Then to be the data that send in up mixed zone for fear of relay station cause interference to the received signal of base station in up access district of neighbor cell to TTG (Transmit Transition Gap, transmission/reception conversion interval); Terminal is in idle condition (can not send data) under the relay station.
In up access district, the base station receives the data of self terminal (except the affiliated terminal of relay station); Relay station receives the data that the affiliated terminal of this relay station sends, and these data can be transmitted to the base station in the up mixed zone of next field then by the relay station buffer memory.
In downlink mixed area, the base station sends data, and control signaling and synchronizing signal are given relay station and terminal (except the affiliated terminal of relay station); Relay station receives the data that synchronizing signal, control signaling and plan that the base station sends send to terminal under the relay station, and these data can be by the relay station buffer memory, is transmitted to terminal in the descending access district of the next field of next field or described next field then; Terminal is in idle condition (can not send data) under the relay station.
Introduce the embodiment of the invention one below, about a kind of method of supporting relay transmission, in the present embodiment, transfer of data is carried out according to the LTE TDD radio frames of 2 * 5ms in travelling carriage, relay station and base station.As shown in Figure 5, for supporting the frame structure schematic diagram of a kind of radio frames of nontransparent relaying in the present embodiment, this radio frames comprises the field of 2 5ms, each field comprises 5 subframes, each subframe is 1ms, this radio frames is supported the transfer of data of nontransparent relaying, and terminal can only be communicated by letter with relay station under nontransparent relaying referred to relay station.
When the transfer of data of nontransparent relaying is supported in the base station, the radio frames of base station institute foundation comprises two fields, each field comprises 5 districts, be followed successively by: descending access district (DL Access Zone), special time slot district (comprising DwPTS, GP and UpPTS), up mixed zone (UL Hybrid Zone), up access district (UL Access Zone) and downlink mixed area (DL Hybrid Zone), these 5 zones take 5 subframes in each field successively.The base station is that terminal sends data and control signaling in descending access district, and simultaneously, relay station is that terminal sends data and control signaling under it.In up mixed zone, the mode that terminal (relay station under terminal except) and relay station can FDM (Frequency Division Multiplex, frequency division multiplex) takies up transmission resource, and is linked into the base station.Have only terminal (except the affiliated terminal of relay station) can use this time interval resource to send data to the base station in up access district, simultaneously, terminal can use this time interval resource to send data to this relay station under the relay station.In downlink mixed area, base station transmits control information and downlink data comprise to relay station emission synchronizing signal and control signaling, shown in black square among Fig. 5.The transfer point GP that downstream-to-upstream is arranged between DwPTS and UpPTS.
When relay station is supported the transfer of data of nontransparent relaying, the radio frames of relay station institute foundation comprises two fields equally, each field comprises 5 districts, be followed successively by: descending access district (DL Access Zone), special time slot district (comprising DwPTS, GP and UpPTS), up mixed zone (UL Hybrid Zone), up access district (UL Access Zone) and downlink mixed area (DL Hybrid Zone), these 5 zones take 5 subframes in each field successively.In descending access district, the data forwarding that relay station will receive from the base station is given affiliated terminal.In up mixed zone, relaying is delivered to the base station with the data forwarding of affiliated terminal.In up access district, terminal was to the upstream data and the control signaling of its emission under relay station received.In downlink mixed area, relay station receives data, synchronizing signal and the control signaling that the base station sends.Between DwPTS and UpPTS the transfer point GP of downstream-to-upstream.Between special time slot district and up mixed zone, comprise the first transmitting-receiving conversion interval RTG, comprise that between up mixed zone and up access district send out to be received a conversion interval TTG, between the descending access district of the downlink mixed area of current field and next field, comprise the second transmitting-receiving conversion interval.
When the base station in system and relay station are all supported the transfer of data of nontransparent relaying, then comprise descending access district (DL Access Zone) successively for each field in the radio frames of terminal institute foundation under the relay station of supporting nontransparent relaying, the special time slot district (comprises RX (Receive, receiving slot), GP and UpPTS), first free area, up access district (UL Access Zone) and second free area, these 5 zones take 5 subframes in each field successively.This radio frames is only applicable to the MS under the nontransparent RS covering.In descending access district, terminal receives the base station data that relay station is transmitted under the relay station.RX in the special time slot district is used for receiving the synchronizing signal that relay station is launched.Be first free area subsequently.In up access district, terminal is to relay station emission upstream data and control signaling under the relay station.Be second free area subsequently.Between RX and UpPTS the transfer point GP of downstream-to-upstream.In each free area, terminal does not send data under the relay station.
As shown in Figure 6, for supporting the frame structure of a kind of radio frames of transparent relay in the present embodiment, a radio frames comprises the field of 2 5ms, and each field comprises 5 subframes, and each subframe is 1ms.Terminal can not only be communicated by letter with relay station under transparent relay referred to relay station, also can receive the signals such as DwPTS that send the base station.
Support that in order to make transparent frame structure with the radio frames of supporting nontransparent relaying is compatible fully, for terminal under base station and the relay station, the frame structure of the support transparent relay that present embodiment one proposes is identical with the frame structure of nontransparent relaying, difference only is to change the DwPTS in the special time slot district in the frame structure of the radio frames of the nontransparent relaying of support of relay station into receiving slot (RX), in RX, relay station does not send signal, the DwPTS that can be used for receiving base station carries out synchronously, perhaps enter idle condition, perhaps carry out cell measurement etc.Simultaneously, between the descending access district (DL Access Zone) of the downlink mixed area (DL Hybrid Zone) of a last field and current field, comprise the first transmitting-receiving conversion interval, be the second transmitting-receiving conversion interval between special time slot district and up mixed zone (UL Hybrid Zone), be one and send out the receipts conversion interval between up mixed zone (UL Hybrid Zone) and up access district (UL Access Zone).Obviously, because it is MAP (mapping) symbol that base station down inserts preceding 1 or more a plurality of symbol in district (DL Access Zone), terminal can directly be received this information, so first of transparent relay stations receive and dispatch the waste that conversion interval RTG can't cause resource herein.Terminals frames structure among Fig. 6 only limits to the terminals frames structure under the transparent relay stations covering.
In addition, when the part among the DwPTS in base station special time slot district was used to transmit data, correspondingly, the part of the RX time slot in relay station special time slot district also was used to transmit data, and at this moment, the transmission section data is equivalent to descending access district in the RX time slot.
Introduce the embodiment of the invention two below, about a kind of method of supporting relay transmission, method among method that is provided and the embodiment one is basic identical in the present embodiment, travelling carriage, transfer of data is carried out according to the LTE TDD radio frames of 2 * 5ms in relay station and base station, just when carrying out transfer of data, travelling carriage, relay station transmits according to different radio frames with the base station, as shown in Figure 7, it is the frame structure schematic diagram of supporting the LTE TDD radio frames of nontransparent relaying 2 * 5ms in the embodiment of the invention two, radio frames shown in Figure 7 and radio frames difference shown in Figure 5 are that the order of up mixed zone and up access district exchanges in each field, in the present embodiment, the 3rd subframe is up access district, the 4th subframe is up mixed zone, therefore in the frame structure of relay station, the first transmitting-receiving conversion interval is between up access district and up mixed zone, send out to receive conversion interval between up mixed zone and downlink mixed area, the second transmitting-receiving conversion interval is between the descending access district of the downlink mixed area of present frame and next field.
As shown in Figure 8, it is the frame structure schematic diagram of supporting the LTE TDD radio frames of transparent relay 2 * 5ms in the embodiment of the invention two, the radio frames shown in Figure 8 and the difference of radio frames shown in Figure 6 only are that the up mixed zone in the field and the order in up access district exchange, in the present embodiment, the 3rd subframe is up access district, the 4th subframe is up mixed zone, therefore in the frame structure of relay station, the first transmitting-receiving conversion interval is between up access district and up mixed zone, send out to receive conversion interval between up mixed zone and downlink mixed area, the second transmitting-receiving conversion interval is between the descending access district of the downlink mixed area of present frame and next field.
Introduce the embodiment of the invention three below, present embodiment has proposed a kind of method of supporting relay transmission, and in the present embodiment, transfer of data is carried out according to the LTE TDD radio frames of 10ms in travelling carriage, relay station and base station.As shown in Figure 9, for supporting the frame structure schematic diagram of a kind of radio frames of nontransparent relaying in the present embodiment, this radio frames comprises that 9 length are the subframe of 1ms, and each subframe comprises the time slot of two 0.5ms, and the special time slot that length is 1ms.
When the transfer of data of nontransparent relaying is supported in the base station, the radio frames of base station institute foundation comprises the first descending access district (DL Access Zone) successively, the special time slot district (comprises DwPTS, GP and UpPTS), up mixed zone (UL Hybrid Zone), up access district (UL Access Zone), downlink mixed area (DL Hybrid Zone) and the second descending access district (DL Access Zone).The first descending access district takies first 1ms subframe, the special time slot district takies second 1ms subframe, up mixed zone, up access district, the downlink mixed area and the second descending access district take remaining 8 1ms subframes successively, wherein up mixed zone, up access district, the quantity that each district in the downlink mixed area and the second descending access district takies subframe is arbitrarily, multiple compound mode is arranged, for example: up mixed zone can take 1 1ms subframe, up access district can take 3 1ms subframes, downlink mixed area can take 2 1ms subframes, and the second descending access district takies remaining 2 1ms subframes.Base station and relay station can be that terminal sends data and control signaling with the pattern of FDM simultaneously in the first and second descending access districts.In up mixed zone, the mode that terminal (relay station under terminal except) and relay station can FDM takies up transmission resource, and is linked into the base station.Only terminal (except the affiliated terminal of relay station) can use this time interval resource to send data to the base station in up access district, and simultaneously, terminal can use this time interval resource to send data to this relay station under the relay station.In downlink mixed area, base station transmits control information and downlink data comprise to relay station emission synchronizing signal and control signaling, shown in black square among Fig. 9.The transfer point GP that downstream-to-upstream is arranged between DwPTS and UpPTS.
When relay station is supported the transfer of data of nontransparent relaying, the radio frames of relay station institute foundation comprises the first descending access district (DL Access Zone) successively, the special time slot district (comprises DwPTS, GP and UpPTS), up mixed zone (UL Hybrid Zone), up access district (ULAccess Zone), downlink mixed area (DL Hybrid Zone) and the second descending access district (DL Access Zone).The first descending access district takies first 1ms subframe, and the special time slot district takies second 1ms subframe, and other zone takies one or more subframes successively.In the first descending access district and the second descending access district, the data forwarding that relay station will receive from the base station is given affiliated terminal.In up mixed zone, relaying arrives the base station with the data forwarding of affiliated terminal.In up access district, terminal was to the upstream data and the control signaling of its emission under relay station received.In downlink mixed area, relay station receives the data that the base station sends, synchronizing signal and control signaling.Between DwPTS and UpPTS the transfer point GP of downstream-to-upstream.Between special time slot district and up mixed zone, to insert the first transmitting-receiving conversion interval RTG; Between up mixed zone and up access district, to insert one and send out receipts conversion interval TTG; Between the downlink mixed area and the second descending access district, to insert the second transmitting-receiving conversion interval RTG.
Radio frames for terminal institute foundation under the relay station of supporting nontransparent relaying comprises the first descending access district (DL Access Zone) successively, the special time slot district (comprises RX, GP and UpPTS), first free area, up access district (UL Access Zone), second free area and the second descending access district (DLAccess Zone).The first descending access district takies first 1ms subframe, and the special time slot district takies second 1ms subframe, and other zone takies one or more subframes successively.In descending access district, terminal receives the base station data that relay station is transmitted under the relay station.RX in the special time slot district is used for receiving downlink data or the synchronizing signal that relay station is launched, and is first free area after the special time slot district.In up access district, affiliated terminal is second free area to relay station emission upstream data and control signaling after up access district.Between RX and UpPTS the transfer point GP of downstream-to-upstream.In each free area, terminal does not send data under the relay station.Terminals frames structure shown in Figure 9 only limits to the frame structure of the terminal under the nontransparent relay station covering.
As shown in figure 10, for supporting the frame structure schematic diagram of a kind of LTE TDD radio frames of transparent relay in the present embodiment, this radio frames comprises that 9 length are the subframe of 1ms, and each subframe comprises the time slot of two 0.5ms, and the special time slot that length is 1ms.
Support that in order to make transparent frame structure with the nontransparent relaying of support is compatible fully, the 10ms frame structure of the support transparent relay that the embodiment of the invention three proposes, as shown in figure 10.As seen from Figure 10, the base station is identical with the 10ms frame structure of nontransparent relaying with the 10ms frame structure of the affiliated terminal transparent relay of relay station, difference only is to support the DwPTS in the special time slot district in the frame structure of transparent relay to change receiving slot (RX) into relay station, relay station does not send signal in RX, the DwPTS that can be used for receiving base station carries out synchronously, perhaps enter idle condition, perhaps carry out cell measurement etc.
In addition, when the part among the DwPTS in base station special time slot district was used to transmit data, correspondingly, the part of the RX time slot in relay station special time slot district also was used to transmit data, and at this moment, the transmission section data is equivalent to descending access district in the RX time slot.Terminals frames structure shown in Figure 10 only limits to the terminals frames structure under the corresponding transparent relay stations covering.
Introduce the embodiment of the invention four below, present embodiment provides a kind of method of supporting relay transmission, the method of three kinds of method that is provided and embodiment is basic identical in the present embodiment, travelling carriage, transfer of data is carried out according to the LTE TDD radio frames of 10ms in relay station and base station, just when carrying out transfer of data, travelling carriage, relay station transmits according to different radio frames with the base station, as shown in figure 11, it is the frame structure schematic diagram of supporting the LTE TDD radio frames of nontransparent relaying 10ms in the embodiment of the invention four, the difference of radio frames shown in Figure 11 and radio frames shown in Figure 9 only is that up mixed zone and up access district exchange in proper order, in the present embodiment, adjacent with the special time slot district is up access district, be up mixed zone afterwards, therefore in the frame structure of relay station, the first transmitting-receiving conversion interval is between up access district and up mixed zone, send out and receive conversion interval between up mixed zone and downlink mixed area, the second transmitting-receiving conversion interval is between downlink mixed area and descending access district.
As shown in figure 12, it is the frame structure schematic diagram of the LTE TDD radio frames of the 10ms of support transparent relay in the embodiment of the invention four, the radio frames shown in Figure 12 and the difference of radio frames shown in Figure 10 only are that up mixed zone and up access district exchange in proper order, in the present embodiment, adjacent with the special time slot district is up access district, be up mixed zone afterwards, therefore in the frame structure of relay station, the first transmitting-receiving conversion interval is between up access district and up mixed zone, send out and receive conversion interval between up mixed zone and downlink mixed area, the second transmitting-receiving conversion interval is between downlink mixed area and descending access district.
Figure 11 and radio frames shown in Figure 12 can be reserved littler TTG protection at interval with respect to Fig. 9 and radio frames shown in Figure 10.
The method of the support relay transmission that provides according to the embodiment of the invention, communication equipment is when carrying out transfer of data, comprised different zones in the LTE TDD radio frames of institute's basis, and each zone takies one or more subframes, it promptly is the cycle with the subframe, realized and the compatibility of prior LTE system that radio frames does not change the size that inserts the subframe that the district takies, the signaling and the data of transmission, therefore can with the LTE tdd frame structure compatible in the prior LTE system.And the LTE tdd frame structure that the embodiment of the invention proposes comprises the mixed zone, therefore can support the relay transmission of data.In addition, the frame structure of the LTE TDD radio frames of the 10ms that the embodiment of the invention proposes had both been considered and the compatibility of LTE system, had satisfied the flexibility of relay application again.
Introduce the embodiment of the invention five below, a kind of communication equipment is provided, comprising: transport module, be used for system at LTE, carry out transfer of data according to LTE TDD radio frames, described LTE tdd frame structure comprises different zones, and each zone takies one or more subframes.
This communication equipment is specially the affiliated terminal of base station, relay station or relay station.Terminal under base station, relay station or the relay station is in the LTE system, can carry out transfer of data according to LTE TDD radio frames, this LTE radio frames can be for comprising the radio frames of 2 5ms fields, in each field, comprised 5 different zones, each zone is to take a subframe; This LTE radio frames can be the radio frames of 10ms for length also, in a radio frames, has comprised 6 different zones, and each zone takies one or more subframes.Base station, relay station or terminal are carried out the method for transfer of data can be with reference to the method embodiment of above-mentioned support relay transmission.
Communication equipment is when carrying out transfer of data, comprised different zones in the LTE TDD radio frames of institute's basis, and each zone takies one or more subframes, it promptly is the cycle with the subframe, realized compatibility with prior LTE system, radio frames does not change the size that inserts the subframe that the district takies, the signaling and the data of transmission, therefore can with the LTE tdd frame structure compatible in the prior LTE system.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (15)
1, a kind of method of supporting relay transmission is characterized in that, comprising:
In Long Term Evolution LTE system, communication equipment carries out transfer of data according to LTE TDD radio frames;
Described LTE TDD radio frames comprises different zones, and each zone takies one or more subframes.
2, support the method for relay transmission according to claim 1, it is characterized in that described LTE TDD radio frames comprises 2 fields, each field comprises the subframe of 5 1ms.
3, as the method for support relay transmission as described in the claim 2, it is characterized in that described communication equipment is the base station;
Described each field comprises 5 zones successively, is respectively: descending access district, special time slot district, up mixed zone, up access district and downlink mixed area, each zone take 1 subframe; Perhaps,
Described each field comprises 5 zones successively, is respectively: descending access district, special time slot district, up access district, up mixed zone and downlink mixed area, and each zone takies 1 subframe;
Described special time slot district comprises descending pilot frequency time slot, interval and uplink pilot time slot successively.
4, as the method for support relay transmission as described in the claim 2, it is characterized in that described communication equipment is a relay station;
Described LTE TDD radio frames is supported nontransparent relaying, described each field comprises 5 zones successively, be respectively: descending access district, special time slot district, up mixed zone, up access district and downlink mixed area, each zone takies 1 subframe, it between described special time slot district and the up mixed zone the first transmitting-receiving conversion interval, between described up mixed zone and the up access district being one and sending out the receipts conversion interval, is the second transmitting-receiving conversion interval between the descending access district of the downlink mixed area of current field and next field;
Described special time slot district comprises successively: descending pilot frequency time slot, interval and uplink pilot time slot.
5, as the method for support relay transmission as described in the claim 2, it is characterized in that described communication equipment is a relay station;
Described LTE TDD radio frames is supported nontransparent relaying, described each field comprises 5 zones successively, be respectively: descending access district, special time slot district, up access district, up mixed zone and downlink mixed area, each zone takies 1 subframe, it between described up access district and the up mixed zone the first transmitting-receiving conversion interval, between described up mixed zone and the downlink mixed area being one and sending out the receipts conversion interval, is the second transmitting-receiving conversion interval between the descending access district of the downlink mixed area of current field and next field;
Described special time slot district comprises successively: descending pilot frequency time slot, interval and uplink pilot time slot.
6, as the method for support relay transmission as described in the claim 2, it is characterized in that described communication equipment is a relay station;
Described LTE TDD radio frames is supported transparent relay, described each field comprises 5 zones successively, be respectively: descending access district, special time slot district, up mixed zone, up access district and downlink mixed area, each zone takies 1 subframe, it between the descending access district of the downlink mixed area of a last field and current field the first transmitting-receiving conversion interval, be the second transmitting-receiving conversion interval between described special time slot district and the up mixed zone, between described up mixed zone and the up access district be one and send out the receipts conversion interval;
Described special time slot district comprises successively: receiving slot, interval and uplink pilot time slot.
7, as the method for support relay transmission as described in the claim 2, it is characterized in that described communication equipment is a relay station;
The LTE TDD radio frames of described 2 * 5ms is supported transparent relay, described each field comprises 5 zones successively, be respectively: descending access district, special time slot district, up access district, up mixed zone and downlink mixed area, each zone takies 1 subframe, it between the descending access district of the downlink mixed area of a last field and current field the first transmitting-receiving conversion interval, be the second transmitting-receiving conversion interval between described up access district and the up mixed zone, between described up mixed zone and the downlink mixed area be one and send out the receipts conversion interval;
Described special time slot district comprises successively: receiving slot, interval and uplink pilot time slot.
As the method for support relay transmission as described in the claim 2, it is characterized in that 8, described communication equipment is a terminal under the relay station; Described each field comprises 5 zones successively, is respectively: descending access district, special time slot district, first free area, up access district and second free area, each zone take 1 subframe; Perhaps,
Described each field comprises 5 zones successively, is respectively: descending access district, special time slot district, up access district, first free area and second free area, and each zone takies 1 subframe;
Described special time slot district comprises receiving slot, interval and uplink pilot time slot successively.
9, support the method for relay transmission according to claim 1, it is characterized in that described LTE TDD radio frames is the radio frames of 10ms, comprises 10 subframes, the length of each subframe is 1ms.
10, as the method for support relay transmission as described in the claim 9, it is characterized in that, when described communication equipment was the base station, described radio frames comprised the first descending access district, special time slot district, up mixed zone, up access district, downlink mixed area and the second descending access district successively; Perhaps,
Described radio frames comprises the first descending access district, special time slot district, up access district, up mixed zone, downlink mixed area and the second descending access district successively;
Described special time slot district comprises descending pilot frequency time slot, interval and uplink pilot time slot successively, and the described first descending access district takies first subframe; Described special time slot district takies second subframe, and described up access district, up mixed zone, downlink mixed area and the second descending access district take remaining one or more subframe.
11, as the method for support relay transmission as described in the claim 9, it is characterized in that, when described communication equipment was relay station, described radio frames comprised the first descending access district, special time slot district, up mixed zone, up access district, downlink mixed area and the second descending access district successively;
The described first descending access district takies first subframe, and described special time slot district takies second subframe, and described up mixed zone, up access district, downlink mixed area and the second descending access district take remaining one or more subframe successively; Being the first transmitting-receiving conversion interval between described special time slot district and the up mixed zone, between described up mixed zone and the up access district being one and sending out the receipts conversion interval, is the second transmitting-receiving conversion interval between the described downlink mixed area and the second descending access district;
Described special time slot district comprises descending pilot frequency time slot, interval and uplink pilot time slot successively; Or comprise receiving slot, interval and uplink pilot time slot successively.
12, as the method for support relay transmission as described in the claim 9, it is characterized in that, when described communication equipment was relay station, described radio frames comprised the first descending access district, special time slot district, up access district, up mixed zone, downlink mixed area and the second descending access district successively;
The described first descending access district takies first subframe, and described special time slot district takies second subframe, and described up mixed zone, up access district, downlink mixed area and the second descending access district take remaining one or more subframe successively; Being the first transmitting-receiving conversion interval between described up access district and the up mixed zone, between described up mixed zone and the downlink mixed area being one and sending out the receipts conversion interval, is the second transmitting-receiving conversion interval between the described downlink mixed area and the second descending access district;
Described special time slot district comprises descending pilot frequency time slot, interval and uplink pilot time slot successively; Or comprise receiving slot, interval and uplink pilot time slot successively.
13, as the method for support relay transmission as described in the claim 9, it is characterized in that, during terminal, described radio frames comprises the first descending access district, special time slot district, first free area, up access district, second free area and the second descending access district successively under described communication equipment is relay station; Perhaps,
Described radio frames comprises the first descending access district, special time slot district, up access district, first free area, second free area and the second descending access district successively;
The described first descending access district takies first subframe, and described special time slot district takies second subframe, and described up access district, first free area, second free area and the second descending access district take the one or more subframes of residue; Described special time slot district comprises receiving slot, interval and uplink pilot time slot successively.
14, a kind of communication equipment is characterized in that, comprising: transport module, be used for system at Long Term Evolution LTE, and carry out transfer of data according to LTE TDD radio frames;
Described LTE TDD radio frames comprises different zones, and each zone takies one or more subframes.
As communication equipment as described in the claim 14, it is characterized in that 15, described communication equipment is specially terminal under base station, relay station or the described relay station.
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| CN 200810009361 CN101521538B (en) | 2008-02-25 | 2008-02-25 | Method and communication equipment for supporting relay transmission |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012010029A1 (en) * | 2010-07-22 | 2012-01-26 | 中兴通讯股份有限公司 | Method, device and base station for determining resource element set of relay link |
| CN102457967A (en) * | 2010-10-28 | 2012-05-16 | 华为技术有限公司 | Data transmission method and equipment |
| US9203501B2 (en) | 2008-10-24 | 2015-12-01 | Huawei Technologies Co., Ltd. | Relay transmission method and apparatus |
| US9247479B2 (en) | 2010-09-02 | 2016-01-26 | Intel Deutschland Gmbh | Resource allocation in a mobile communication system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1956354A (en) * | 2005-10-26 | 2007-05-02 | 华为技术有限公司 | Radio relay communication system and implementing method |
| KR20070048575A (en) * | 2005-11-04 | 2007-05-09 | 삼성전자주식회사 | Apparatus and method for supporting multi-link using of group of multi-hop in multi-hop relay cellular network with using two frequency band |
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2008
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9203501B2 (en) | 2008-10-24 | 2015-12-01 | Huawei Technologies Co., Ltd. | Relay transmission method and apparatus |
| WO2012010029A1 (en) * | 2010-07-22 | 2012-01-26 | 中兴通讯股份有限公司 | Method, device and base station for determining resource element set of relay link |
| US9247479B2 (en) | 2010-09-02 | 2016-01-26 | Intel Deutschland Gmbh | Resource allocation in a mobile communication system |
| US9980200B2 (en) | 2010-09-02 | 2018-05-22 | Intel Deutschland Gmbh | Resource allocation in a mobile communication system |
| CN102457967A (en) * | 2010-10-28 | 2012-05-16 | 华为技术有限公司 | Data transmission method and equipment |
| CN102457967B (en) * | 2010-10-28 | 2014-11-19 | 华为技术有限公司 | Data transmission method and equipment |
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| CN101521538B (en) | 2013-01-23 |
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