CN101784125A - Data transmission method and system in TDD mode - Google Patents
Data transmission method and system in TDD mode Download PDFInfo
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- CN101784125A CN101784125A CN200910077216A CN200910077216A CN101784125A CN 101784125 A CN101784125 A CN 101784125A CN 200910077216 A CN200910077216 A CN 200910077216A CN 200910077216 A CN200910077216 A CN 200910077216A CN 101784125 A CN101784125 A CN 101784125A
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Abstract
The invention discloses a data transmission method and system in TDD mode, aiming to realize the technical scheme that data is transmitted between base station and user equipment. The data transmission method in TDD mode provided by the invention comprises the following step: relay node between base station and user equipment is used to transmit the data which are sent mutually between base station and user equipment, wherein time cell used for transmitting data between base station and relay node is time cell corresponding to a pre-configured downlink mixed area or uplink mixed area; and time cell used for transmitting data between relay node and user equipment is time cell corresponding to a pre-configured downlink access area or uplink access area.
Description
Technical field
The present invention relates to communication technical field, relate in particular to data transmission method and system under a kind of time division duplex (TDD) pattern.
Background technology
At present; frame structure under time division duplex (TDD) pattern in Long Term Evolution (LTE) system specifications as shown in Figure 1; the length of each radio frames is 10 milliseconds (ms); comprise two fields (half-frame); each field comprises the subframe (subframe) of 5 1ms again; each subframe can be divided into the common time slot (slot) of two 0.5ms again; in special subframe (S), comprise 3 special time slots; be descending pilot frequency time slot (DwPTS; Downlink Pilot Time Slot); protection is (GP) and uplink pilot time slot (UpPTS at interval; Uplink Pilot Time Slot); wherein subframe 0 must be a descending sub frame; synchronizing signal; the broadcast singal of non-scheduling (as MIB) all sends on this subframe, and considers the up-downgoing switching, and subframe 2 must be a sub-frame of uplink.
Two 5ms fields in radio frames can be two identical field structures as shown in Figure 1, promptly be the frame structure in cycle with 5ms, and the proportional arrangement of its uplink and downlink timeslot can be 1DL: 3UL, 2DL: 2UL or 3DL: 1UL.Wherein, DL represents down link, and UL represents down link.In addition, consider the compatibility of utilization ratio of wireless resources and different frame structure, two 5ms fields also can be different frame structures, have only a field to have the special time slot of 1ms (S), special time slot in the 5ms field can flexible configuration be last/downlink data time slot in addition, promptly be the frame structure in cycle with 10ms, the proportional arrangement of its uplink and downlink timeslot can be 6DL: 3UL, 7DL: 2UL, 8DL: 1UL or 3DL: 5UL.To sum up, have 7 kinds of uplink/downlink frames structural arrangements types, as shown in Figure 2.
In present LTE systematic research, via node (RN has been proposed, Relay Node) notion, but since also not clear and definite based on the frame structure configuration of the LTE TDD system of via node, can't realize transfer of data at present based on the LTE TDD system of via node.
Summary of the invention
The embodiment of the invention provides data transmission method and the system under a kind of tdd mode, in order to realize transmitting between base station and subscriber equipment by via node the technical scheme of data.
Data transmission method under a kind of tdd mode that the embodiment of the invention provides comprises:
Transmit the data that send mutually between described base station and the subscriber equipment by the via node between base station and the subscriber equipment; Wherein,
The time quantum that is used for transmission data between base station and via node is pre-configured down mixing zone or the pairing time quantum in up Mixed Zone;
The time quantum that is used for transmission data between via node and subscriber equipment is pre-configured descending access zone or up access area relative time quantum.
A kind of communication system that the embodiment of the invention provides comprises:
The base station is used to adopt the pre-configured pairing time quantum in down mixing zone to send data to via node; Adopt the pairing time quantum in pre-configured up Mixed Zone to receive the data that via node is transmitted;
Via node is used for receiving the data that base station that the pre-configured pairing time quantum in down mixing zone carries sends, and adopts pre-configured descending access area relative time quantum to be transmitted to subscriber equipment; Receive the data of the subscriber equipment transmission of carrying in the pre-configured up access area relative time quantum, and adopt the pre-configured pairing time quantum in up Mixed Zone to be transmitted to the base station;
Subscriber equipment is used for receiving the data that via node that pre-configured descending access area relative time quantum carries sends; Adopt pre-configured up access area relative time quantum to send data to via node.
The embodiment of the invention is transmitted the data that send mutually between described base station and the subscriber equipment by the via node between base station and the subscriber equipment; Wherein, the time quantum that is used between base station and via node the transmission data is pre-configured down mixing zone or the pairing time quantum in up Mixed Zone; The time quantum that is used for transmission data between via node and subscriber equipment is pre-configured descending access zone or up access area relative time quantum, thereby has realized transmitting between base station and subscriber equipment by via node the technical scheme of data.
Description of drawings
Fig. 1 is a prior art LTE tdd frame structural representation;
Fig. 2 is a prior art uplink/downlink frames structural arrangements schematic diagram;
The frame structure schematic diagram that Fig. 3 provides for the embodiment of the invention based on the LTE-A TDD system of via node;
The schematic flow sheet of the data transmission method under a kind of tdd mode that Fig. 4 provides for the embodiment of the invention;
Dispose the LTE-ATDD frame structure schematic diagram of 0 pattern under the semiduplex mode that Fig. 5 provides for the embodiment of the invention based on LTE TDD;
Dispose the LTE-ATDD frame structure schematic diagram of 1 pattern under the semiduplex mode that Fig. 6 provides for the embodiment of the invention based on LTE TDD;
Dispose the another kind of LTE-ATDD frame structure schematic diagram of 1 pattern under the semiduplex mode that Fig. 7 provides for the embodiment of the invention based on LTE TDD;
Dispose the LTE-ATDD frame structure schematic diagram of 2 patterns under the semiduplex mode that Fig. 8 provides for the embodiment of the invention based on LTE TDD;
Dispose the LTE-ATDD frame structure schematic diagram of 3 patterns under the semiduplex mode that Fig. 9 provides for the embodiment of the invention based on LTE TDD;
Dispose the LTE-ATDD frame structure schematic diagram of 4 patterns under the semiduplex mode that Figure 10 provides for the embodiment of the invention based on LTE TDD;
Dispose the LTE-ATDD frame structure schematic diagram of 5 patterns under the semiduplex mode that Figure 11 provides for the embodiment of the invention based on LTE TDD;
Dispose the LTE-ATDD frame structure schematic diagram of 6 patterns under the semiduplex mode that Figure 12 provides for the embodiment of the invention based on LTE TDD;
Dispose the LTE-ATDD frame structure schematic diagram of 0 pattern under the full-duplex mode that Figure 13 provides for the embodiment of the invention based on LTE TDD;
Dispose the LTE-ATDD frame structure schematic diagram of 1 pattern under the full-duplex mode that Figure 14 provides for the embodiment of the invention based on LTE TDD;
Dispose the LTE-ATDD frame structure schematic diagram of 2 patterns under the full-duplex mode that Figure 15 provides for the embodiment of the invention based on LTE TDD;
Dispose the LTE-ATDD frame structure schematic diagram of 3 patterns under the full-duplex mode that Figure 16 provides for the embodiment of the invention based on LTE TDD;
Dispose the LTE-ATDD frame structure schematic diagram of 4 patterns under the full-duplex mode that Figure 17 provides for the embodiment of the invention based on LTE TDD;
Dispose the LTE-ATDD frame structure schematic diagram of 5 patterns under the full-duplex mode that Figure 18 provides for the embodiment of the invention based on LTE TDD;
Dispose the LTE-ATDD frame structure schematic diagram of 6 patterns under the full-duplex mode that Figure 19 provides for the embodiment of the invention based on LTE TDD;
The structural representation of a kind of communication system that Figure 20 provides for the embodiment of the invention.
Embodiment
The embodiment of the invention provides data transmission method and the system under a kind of tdd mode, in order to realize transmitting between base station and subscriber equipment by via node the technical scheme of data.
In the LTE-A system, via node (RN) is used for transmitting data between base station and subscriber equipment, owing to increased via node, therefore need in the multi-hop cellular mobile communication networks system that forms, provide corresponding frame structure configuration, to realize the transfer of data in the multi-hop cellular mobile communication networks system.
Via node can adopt semiduplex working method, also can adopt the isolated full-duplex mode that avoids interference of physics, therefore is divided into half-duplex and two kinds of schemes of full duplex at the frame structure design aspect:
In half-duplex scheme, because the introducing of via node makes the Radio Link based on the cell mobile communication systems of via node be divided into three: the access link of (RN-Relay UE) between the repeated link and via node and subscriber equipment of (eNB-RN) between access link, base station and the via node of (eNB-Macro UE) between base station and the subscriber equipment.Consider the signal interference-limited of radio communication, therefore these three links need use the Radio Resource of quadrature, the transceiver of via node is the TDD mode of operation simultaneously, so the eNB-RN repeated link needs to take different time slots in the tdd frame structure with RN-Relay UE access link, so separate in the crack in the access of RN uplink downlink zone and relaying zone on time.But eNB-MacroUE access link zone and eNB-RN relaying zone can coexist, because for base station (eNB), RN is equivalent to subscriber equipment (UE), so in order fully effectively to utilize Radio Resource, eNB-MacroUE access link zone and eNB-RN relaying zone can be time slot coexistences, as long as its running time-frequency resource quadrature just can, so constituted a Mixed Zone.So, have following time slot zone in each the radio half frame structure based on the advanced person's of Relay Long Term Evolution (LTE-A) tdd frame structure:
Descending access zone: RN adopts this zone that the data of eNB are sent to UE.
Down mixing zone: eNB adopts this zone to send data to RN.
Up access zone: UE adopts this zone to send the data to RN.
Up Mixed Zone: RN adopts this zone to send data to eNB.
Special time slot (S): the same with LTE tdd frame structure, form by DwPTS, GP and UpPTS.DwPTS can transmit master sync signal, and DwPTS can be configured to descending access zone or down mixing zone; UpPTS can transmit uplink synchronizing signals and uplink detection reference signal (sounding), UpPTS can be configured to up access zone or up Mixed Zone, when UpPTS is configured to up access zone, be used to receive the signal of UE, but this signal can not be transmitted to eNB; When UpPTS is configured to up Mixed Zone, that RN sends to eNB is synchronizing signal and the sounding that self produces, rather than from the signal of UE.As shown in Figure 3, TX wherein represents sending mode, and RX represents receiving mode.
In the full duplex scheme, RN can transmit and receive data simultaneously in each subframe, therefore inserts or the Mixed Zone without differentiating uplink and downlink, can adopt the various configurations of current tdd frame structure.
Referring to Fig. 4, the data transmission method under a kind of tdd mode that the embodiment of the invention provides comprises step:
S101, via node determine that according to the corresponding relation of pre-configured down mixing zone with downgoing time unit the base station sends the time quantum that data adopted, and receive in this time quantum the data from the base station.
Wherein, described time quantum is subframe or time slot, and a plurality of time quantums constitute the Preset Time section described in the embodiment of the invention, and the length of this Preset Time section can be identical with the length of a radio frames, also can be different.
S102, via node are according to the pre-configured descending corresponding relation that inserts zone and downgoing time unit, be identified for to the downgoing time unit of subscriber equipment forwarding, and give subscriber equipment (Relay UE) from the data of base station by this downgoing time unit forwards from the data of base station.
S103, via node determine that according to the pre-configured up corresponding relation that inserts zone and up time quantum subscriber equipment sends the up time quantum that data adopted, and receive in this up time quantum the data from subscriber equipment.
S104, via node are according to the pre-configured up Mixed Zone and the corresponding relation of up time quantum, be identified for to the up time quantum of base station forwarding, and give the base station from the data of subscriber equipment by this up time quantum forwarding from the data of subscriber equipment.
Need to prove that the execution sequence of above-mentioned four steps is not fixed.Down direction, execution in step S101 and step S102 respectively; Up direction, execution in step S103 and step S104 respectively.The transfer of data of up direction and down direction can be carried out simultaneously.
Preferably, comprise regional with descending access respectively, the regional and corresponding time quantum in up Mixed Zone of regional, the up access of down mixing in each Preset Time section at least.
Preferably, directly under the situation of service data transmission, the time quantum that is used for synchronous signal transmission and/or broadcast singal in each Preset Time section is corresponding with descending access zone at base station and subscriber equipment.In addition, being used for the time quantum of synchronous signal transmission and/or broadcast singal in each Preset Time section also can be corresponding with the down mixing zone.
Preferably, described Preset Time section is more than or equal to section cycle time of each frame, and is the integral multiple of described cycle time of section.
Section cycle time described in the embodiment of the invention, for example the subframe 0 under the frame structure configuration 0 is identical to the frame structure of subframe 9 with subframe 5 to subframe 4 frame structures among Fig. 2, all be " DSUUU ", promptly be followed successively by descending sub frame, special subframe, sub-frame of uplink, sub-frame of uplink, sub-frame of uplink.Therefore, the time period that this subframe structure is repeated is called section cycle time, frame structure configuration 0 for example shown in Figure 2, and from subframe 0, every 5ms is the one-period time period; Frame structure configuration 5, from subframe 0, every 10ms is the one-period time period.
The length of the Preset Time section described in the embodiment of the invention can equal the length of section cycle time, can be the integral multiple of section cycle time still greater than the length of section cycle time also.
Preferably, the time corresponding unit, down mixing zone in each Preset Time section and the ratio of the quantity of the regional time corresponding of descending access unit, the ratio of time corresponding unit, perhaps up Mixed Zone and the quantity of the regional time corresponding of up access unit is the ratio of the access link data carried by data amount between data carried by data amount and via node and the subscriber equipment on the repeated link between base station and the via node.
Introduce the configuration that provides in the embodiment of the invention below in detail based on the system frame structure under the different time-gap configuration of the LTE-A TDD system-frame of via node.
Frame structure configuration under the semiduplex mode comprises following seven kinds:
1, based on the frame structure that has LTE tdd frame structural arrangements 0 pattern now.
As shown in Figure 2, in the frame structure of configuration 0,5ms is a transfer point, and 3 sub-frame of uplink of 1 descending sub frame (D) (U) are arranged among every 5ms.Descending have only a subframe, and promptly subframe 0, therefore, in the system frame structure that the embodiment of the invention provides based on RN, except configurating downlink inserts the zone, also need the configurating downlink Mixed Zone, the frame structure that therefore must will have configuration 0 now expands to the frame structure of 10ms at least.
As shown in Figure 5, the frame structure of 10ms can configure descending access zone, regional, the up Mixed Zone of down mixing and up access zone.Preferably, synchronizing signal and broadcast message are by subframe 0 transmission, therefore subframe 0 can be configured to descending access zone, subframe 5 can be configured to the down mixing zone, remaining sub-frame of uplink, can be according to the proportionate relationship of the access link data carried by data amount between data carried by data amount and via node and the subscriber equipment on the repeated link between base station and the via node, collocating uplink inserts zone and up Mixed Zone, be the subframe and the up ratio that inserts the quantity of the corresponding subframe in zone of up Mixed Zone correspondence, be the ratio of the access link data carried by data amount between data carried by data amount and via node and the subscriber equipment on the repeated link between base station and the via node.
2, based on the frame structure that has LTE tdd frame structural arrangements 1 pattern now.
As shown in Figure 2, in the frame structure of configuration 1,5ms is a transfer point, and 2 sub-frame of uplink of 2 descending sub frames are arranged among every 5ms.Preferably, subframe 0 is used to carry synchronizing signal and broadcast message, thus be configured to descending access zone, another descending sub frame, promptly subframe 4 is configured to the down mixing zone.In the sub-frame of uplink, promptly a subframe in subframe 2 and the subframe 3 is configured to up access zone, and another is configured to up Mixed Zone, as shown in Figure 6.
If the Radio Resource that data quantity transmitted needs between data quantity transmitted and RN and the Relay UE between eNB and the RN is asymmetric, can expand to 10ms even longer to the frame structure of RN so, to guarantee between eNB and the RN proportion requirement of data quantity transmitted between the data quantity transmitted and RN and Relay UE.Be configured to descending the access under the regional situation in subframe 0, can dynamically dispose the ratio that up-downgoing inserts zone and up-downgoing Mixed Zone.As shown in Figure 7, the descending ratio that inserts the corresponding number of sub frames in the zone number of sub frames corresponding with the down mixing zone is 3: 1, and the up ratio that inserts the corresponding number of sub frames in the zone number of sub frames corresponding with up Mixed Zone also is 3: 1.
3, dispose the frame structure of 2 patterns based on LTE TDD.
As shown in Figure 2, in the frame structure of LTE TDD configuration 2,5ms is a transfer point, and 1 sub-frame of uplink of 3 descending sub frames is arranged among every 5ms.Up have only a subframe 2, can only be configured to up access zone or up Mixed Zone, therefore need the frame structure of LTE TDD configuration 2 is expanded to the frame structure of 10ms length at least, as shown in Figure 8,7 one of subframe 2 and subframes are configured to up Mixed Zone, and another is configured to up access zone; Subframe 0 is configured to descending access zone, for other descending sub frames, can send to the size relation of the required Radio Resource of the data volume of Relay UE and data volume that eNB sends to RN according to RN, dynamic-configuration is descending access zone or down mixing zone.
4, dispose the frame structure of 3 patterns based on LTE TDD.
As shown in Figure 2, in the frame structure of LTE TDD configuration 3,10ms is a transfer point, and 3 sub-frame of uplink of 6 descending sub frames are arranged among every 10ms.Subframe 0 and subframe 5 can be carried synchronizing signal and broadcast message, so be configured to descending access zone.Other 5 descending sub frames dynamic-configuration as required are descending access zone and down mixing zone.3 sub-frame of uplink dynamic-configuration as required are up access zone and up Mixed Zone, and as shown in Figure 9, the descending ratio that inserts zone and down mixing zone is 5: 1; The up ratio that inserts zone and up Mixed Zone is 2: 1.
5, dispose the frame structure of 4 patterns based on LTE TDD.
As shown in Figure 2, in the frame structure of LTE TDD configuration 4,10ms is a transfer point, and 2 sub-frame of uplink of 7 descending sub frames are arranged among every 10ms.Subframe 0 and subframe 5 are configured to descending access zone, other 5 descending sub frames dynamic-configuration as required are descending access zone and down mixing zone, a subframe in 2 sub-frame of uplink is configured to up access zone, and another sub-frame configuration is up Mixed Zone.As shown in figure 10, the descending ratio that inserts zone and down mixing zone is 6: 1, and subframe 2 is up Mixed Zone, and subframe 3 is up access zone.Dynamically change the up ratio that inserts zone and up Mixed Zone if desired, needing extension frame structure is 20ms even bigger.
6, dispose the frame structure of 5 patterns based on LTE TDD.
As shown in Figure 2, in the frame structure of LTE TDD configuration 5,10ms is a transfer point, and 1 sub-frame of uplink of 8 descending sub frames is arranged among every 10ms.Subframe 0 and subframe 5 carrying synchronizing signal and broadcast messages, so be configured to descending access zone, other 7 descending sub frames dynamic-configuration as required are descending access zone and down mixing zone; Owing to have only 1 sub-frame of uplink in the frame of a 10ms, so LTETDD will be disposed the frame that 5 frame structure expands to a 20ms at least, sub-frame of uplink among first 10ms and second 10ms, be in subframe 2 and the subframe 12, a subframe is configured to up access zone, and another sub-frame configuration is up Mixed Zone, as shown in figure 11, if further change the up ratio that inserts zone and up Mixed Zone, need extend further to 40ms even bigger frame structure.
7, dispose the frame structure of 6 patterns based on LTE TDD.
As shown in Figure 2, in the frame structure of LTE TDD configuration 6,5ms is a transfer point, and 5 sub-frame of uplink of 3 descending sub frames are arranged in the frame structure of this 10ms.Subframe 0 and subframe 5 carrying synchronizing signal and broadcast messages, so it is regional to be configured to descending accesss, another descending sub frame is configured to the down mixing zone, as shown in figure 12,5 sub-frame of uplink dynamic-configuration as required are the regional and up Mixed Zone of up access.
In sum, the embodiment of the invention has provided above-mentioned 7 kinds of basic frame structure configurations, certainly be not limited to this 7 kinds of configurations, can be according to the difference of the channel condition of the access link of (RN-Relay UE) between the repeated link and via node and subscriber equipment of (eNB-RN) between base station and the via node, it is the difference of the required Radio Resource of these two link transmission identical datas, can dispose different subframes neatly and be access zone or Mixed Zone, and can further realize disposing neatly the corresponding relation that inserts zone and Mixed Zone and subframe by expanding existing frame structure.
About the frame structure design aspect under the full-duplex mode based on the LTE-A TDD system of via node, because via node is in full duplex mode of operation following time, via node can receive from the signal of UE (or eNB) simultaneously and transmit a signal to eNB (or UE), therefore the behavior of frame structure design need the change eNB and UE, design fairly simple, the frame structure configuration of 7 kinds of tdd modes shown in Figure 13 to 19, as seen from the figure, frame structure design under the full duplex does not need to consider to dispose the Mixed Zone of up-downgoing and insert the zone, do not need frame structure is expanded and disposed, therefore design fairly simplely, can adopt existing frame structure Configuration Type.
DwPTS in the special time slot is used for synchronous signal transmission and broadcast, can be transmitted to UE through via node; UpPTS is used to transmit uplink synchronizing signals and sounding, sends to RN by UE, but RN can not be transmitted to eNB, and RN is generated by oneself to uplink synchronizing signals and the sounding that eNB sends.
Introduce the system that the embodiment of the invention provides below.
Referring to Figure 20, a kind of communication system that the embodiment of the invention provides comprises base station 11, via node 12 and one or more subscriber equipment 13.
Via node 12 is used for receiving the data that base station 11 that the pre-configured pairing time quantum in down mixing zone carries sends, and adopts pre-configured descending access area relative time quantum to be transmitted to subscriber equipment 13; Receive the data of subscriber equipment 13 transmissions of carrying in the pre-configured up access area relative time quantum, and adopt the pre-configured pairing time quantum in up Mixed Zone to be transmitted to base station 11.
Preferably, described via node 12 comprises:
Time period dispensing unit 121, be used for storing pre-configured descending insert zone, down mixing regional, up insert zone and up Mixed Zone respectively with the corresponding relation of the time quantum of each Preset Time section.
Time quantum determining unit 122, be used for according to described corresponding relation, determine that base station 11 sends the time quantum of data, transmits the time quantum of data, the time quantum that subscriber equipment 13 sends data and time quantum from data to base station 11 that transmit to subscriber equipment 13.
Preferably, the descending corresponding relation that inserts the time quantum in zone and the Preset Time section of storage in the described time period dispensing unit 121 comprises the time quantum and the descending corresponding relation that inserts the zone that are used for synchronous signal transmission and broadcast singal in this Preset Time section.Comprise special time quantum (can be understood as special subframe) in each Preset Time section, descending pilot frequency time slot in the special time quantum is used for synchronous signal transmission and broadcast singal, therefore preferably, this descending pilot frequency time slot is corresponding with descending access zone, and this descending pilot frequency time slot also can be corresponding with the down mixing zone certainly; And the uplink pilot time slot in the special time quantum can be corresponding with up access zone or up Mixed Zone.
Preferably, described base station 11 comprises:
Time period dispensing unit 111 is used for storing the pre-configured down mixing zone and the corresponding relation of the time quantum of each Preset Time section, and the corresponding relation of the time quantum in up Mixed Zone and each the Preset Time section.
Time quantum determining unit 112 is used for definite affiliated pairing time quantum in down mixing zone of data that need send to via node 12; Determine from the pairing time quantum in up Mixed Zone under the data of via node 12.
Preferably, described subscriber equipment 13 comprises:
Time period dispensing unit 131 is used for storing the pre-configured descending access zone and the corresponding relation of the time quantum of each Preset Time section, and the up corresponding relation that inserts the time quantum in zone and each Preset Time section.
Time quantum determining unit 132 is used for definite affiliated up access area relative time quantum of data that need send to via node 12; Determine from the descending access area relative time quantum under the data of via node 12.
In sum, the embodiment of the invention has provided the dissimilar Relay frame structure configuration under half-duplex and the full-duplex mode in advance based on the dissimilar frame structure configuration of existing LTE TDD system.Based on this, transmit the data that send mutually between described base station and the subscriber equipment by the via node between base station and the subscriber equipment; Wherein, the subframe that is used between base station and via node the transmission data is pre-configured down mixing zone or the pairing subframe in up Mixed Zone; The subframe that is used for transmission data between via node and subscriber equipment is pre-configured descending access zone or up access area relative subframe, thereby has realized transmitting between base station and subscriber equipment by via node the technical scheme of data.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (12)
1. the data transmission method under the TDD pattern is characterized in that described method comprises:
Transmit the data that send mutually between described base station and the subscriber equipment by the via node between base station and the subscriber equipment; Wherein,
The time quantum that is used for transmission data between base station and via node is pre-configured down mixing zone or the pairing time quantum in up Mixed Zone;
The time quantum that is used for transmission data between via node and subscriber equipment is pre-configured descending access zone or up access area relative time quantum.
2. method according to claim 1 is characterized in that, described via node will comprise for the step of subscriber equipment from the data forwarding of base station:
Via node determines that according to the corresponding relation of pre-configured down mixing zone with the downgoing time unit base station sends the downgoing time unit that data adopted, and receives in this downgoing time unit the data from the base station;
Via node is according to the pre-configured descending corresponding relation that inserts zone and downgoing time unit, be identified for to the downgoing time unit of subscriber equipment forwarding, and give subscriber equipment from the data of base station by this downgoing time unit forwards from the data of base station.
3. method according to claim 1 and 2 is characterized in that, described via node will comprise for the step of base station from the data forwarding of user's equipment:
Via node determines that according to the pre-configured up corresponding relation that inserts zone and up time quantum subscriber equipment sends the up time quantum that data adopted, and receives in this up time quantum the data from subscriber equipment;
Via node is according to the pre-configured up Mixed Zone and the corresponding relation of up time quantum, be identified for to the up time quantum of base station forwarding, and give the base station from the data of subscriber equipment by this up time quantum forwarding from the data of subscriber equipment.
4. method according to claim 1 is characterized in that, comprises regional with descending access respectively, the regional and corresponding time quantum in up Mixed Zone of regional, the up access of down mixing in each Preset Time section at least.
5. method according to claim 4 is characterized in that, is used for the time quantum of synchronous signal transmission and/or broadcast singal in described each Preset Time section, and is corresponding with descending access zone or down mixing zone.
6. method according to claim 4 is characterized in that, described Preset Time section is more than or equal to section cycle time of each frame, and is the integral multiple of described cycle time of section.
7. according to claim 4,5 or 6 described methods, it is characterized in that, the time corresponding unit, down mixing zone in described each Preset Time section and the ratio of the quantity of the regional time corresponding of descending access unit, the ratio of time corresponding unit, perhaps up Mixed Zone and the quantity of the regional time corresponding of up access unit is the ratio of the access link data carried by data amount between data carried by data amount and via node and the subscriber equipment on the repeated link between base station and the via node.
8. a communication system is characterized in that, described system comprises:
The base station is used to adopt the pre-configured pairing time quantum in down mixing zone to send data to via node; Adopt the pairing time quantum in pre-configured up Mixed Zone to receive the data that via node is transmitted;
Via node is used for receiving the data that base station that the pre-configured pairing time quantum in down mixing zone carries sends, and adopts pre-configured descending access area relative time quantum to be transmitted to subscriber equipment; Receive the data of the subscriber equipment transmission of carrying in the pre-configured up access area relative time quantum, and adopt the pre-configured pairing time quantum in up Mixed Zone to be transmitted to the base station;
Subscriber equipment is used for receiving the data that via node that pre-configured descending access area relative time quantum carries sends; Adopt pre-configured up access area relative time quantum to send data to via node.
9. system according to claim 8 is characterized in that, described via node comprises:
The time period dispensing unit, be used for storing pre-configured descending insert zone, down mixing regional, up insert zone and up Mixed Zone respectively with the corresponding relation of the time quantum of each Preset Time section;
The time quantum determining unit is used for according to described corresponding relation, determines that the base station sends the time quantum of data, transmits the time quantum of data, the time quantum that subscriber equipment sends data and time quantum from data to the base station that transmit to subscriber equipment;
Transmission unit, the base station that is used for determining by described time quantum determining unit sends the time quantum of data, receives the data that the base station sends; By the definite time quantum of described time quantum determining unit, to the data of subscriber equipment repeating base station to subscriber equipment forwarding data; Time quantum by the definite subscriber equipment transmission data of described time quantum determining unit receives the data that subscriber equipment sends; By the time quantum that described time quantum determining unit is determined, transmit the data of subscriber equipment to the base station to base station forwarding data.
10. system according to claim 9, it is characterized in that, the descending corresponding relation of storing in the described time period dispensing unit that inserts the time quantum in zone and the Preset Time section comprises the time quantum and the descending corresponding relation that inserts the zone that are used for synchronous signal transmission and broadcast singal in this Preset Time section.
11. system according to claim 8 is characterized in that, described base station comprises:
The time period dispensing unit is used for storing the pre-configured down mixing zone and the corresponding relation of the time quantum of each Preset Time section, and the corresponding relation of the time quantum in up Mixed Zone and each frame;
The time quantum determining unit is used for definite affiliated pairing time quantum in down mixing zone of data that need send to via node; Determine from the pairing time quantum in up Mixed Zone under the data of via node;
Transmission unit, the pairing time quantum in down mixing zone that is used to adopt described time quantum determining unit to determine sends data to via node; Receive the data of the via node transmission of carrying in the definite pairing time quantum in up Mixed Zone of described time quantum determining unit.
12. system according to claim 8 is characterized in that, described subscriber equipment comprises:
The time period dispensing unit is used for storing the pre-configured descending access zone and the corresponding relation of the time quantum of each Preset Time section, and the up corresponding relation that inserts the time quantum in zone and each Preset Time section;
The time quantum determining unit is used for definite affiliated up access area relative time quantum of data that need send to via node; Determine from the descending access area relative time quantum under the data of via node;
Transmission unit, the up access area relative time quantum that is used to adopt described time quantum determining unit to determine sends data to via node; Receive the data of the via node transmission of carrying in the definite descending access area relative time quantum of described time quantum determining unit.
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