CN103139869B - A kind of up-downgoing data transmission method and WAP (wireless access point) - Google Patents
A kind of up-downgoing data transmission method and WAP (wireless access point) Download PDFInfo
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- CN103139869B CN103139869B CN201110377894.2A CN201110377894A CN103139869B CN 103139869 B CN103139869 B CN 103139869B CN 201110377894 A CN201110377894 A CN 201110377894A CN 103139869 B CN103139869 B CN 103139869B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0094—Indication of how sub-channels of the path are allocated
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/143—Two-way operation using the same type of signal, i.e. duplex for modulated signals
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
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Abstract
The invention provides a kind of up-downgoing data transmission method, described method comprises: WAP (wireless access point) WAP is by Uu link access evolution base station eNB, described WAP sets up the up-downgoing transfer of data between eNB on Uu link, and the special frequency domain resource that described WAP utilizes eNB to distribute on Ua link and low-cost user equipment LUE carry out up-downgoing transfer of data.Correspondingly, present invention also offers a kind of WAP (wireless access point).Implement up-downgoing data transmission method provided by the invention and WAP (wireless access point), significantly improve the utilance of network spectrum resource.
Description
Technical field
The present invention relates to the communications field, particularly relate to a kind of up-downgoing data transmission method and WAP (wireless access point).
Background technology
LTE (Long Term Evolution, Long Term Evolution) middle employing OFDM (Orthogonal FrequencyDivision Multiplexing, OFDM) technology, the spectrum efficiency of mobile radio communications system is greatly improved.Generally speaking, subscriber equipment (User Equipment, UE) same frequency range can not be used at synchronization, not only send data but also receive data, because the antenna that equipment transmit-receive sharing is identical, if use same frequency range at synchronization, not only send data but also receive data, the data-signal so sent may again by antenna receive return, thus cause the self-interference in UE to cause cannot proper communication.Therefore, the mode of LTE system up-downgoing duplex communicates, such as, can adopt frequency division multiplexing (Frequency DivisionDuplex, FDD) or time division multiplexing (Time Division Duplex, TDD).
At M2M (Machine to Machine, machine and machine communication) in application scenarios, number of user equipment is many, the data volume of transfer of data is less and basic based on transmitting uplink data, especially in extensive M2M scene, ability of user terminal is lower, and direct access network can cause the availability of frequency spectrum lower, and can affect the attainable spectrum efficiency of normal LTE subscriber equipment.
Summary of the invention
The embodiment of the present invention provides a kind of up-downgoing data transmission method and system, the transmission data of low cost user terminal LUE are converged by increasing WAP (wireless access point) WAP in a network, set up up-downgoing data communication with evolution base station eNB, improve the utilance of frequency spectrum resource.
According to the first aspect of the embodiment of the present invention, provide a kind of up-downgoing data transmission method, comprising:
WAP (wireless access point) WAP is by Uu link access evolution base station eNB;
Described WAP sets up the up-downgoing transfer of data between eNB on Uu link;
The special frequency domain resource that described WAP utilizes eNB to distribute on Ua link and low-cost user equipment LUE carry out up-downgoing transfer of data.
According to the second aspect of the embodiment of the present invention, provide a kind of WAP (wireless access point), comprising:
Access unit, for accessing evolution base station eNB by Uu link;
First transmission unit, for setting up the up-downgoing transfer of data between eNB on Uu link;
Second transmission unit, carries out up-downgoing transfer of data for the special frequency domain resource that utilizes eNB to distribute on Ua link and low-cost user equipment LUE.
Implement the embodiment of the present invention, there is following beneficial effect: replacing low-cost user equipment LUE to access eNB by increasing WAP (wireless access point) WAP in a network, converging the up-downgoing data of LUE, significantly improving the utilance of Internet resources; And the function of WAP greatly simplifies compared with eNB, and equipment cost has clear superiority.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 illustrates the schematic diagram of the up-downgoing data transmission method according to embodiment of the present invention.
Fig. 2 illustrates the first schematic diagram of Uu link according to embodiment of the present invention and Ua link duplex mode.
Fig. 3 illustrates the second schematic diagram of Uu link according to embodiment of the present invention and Ua link duplex mode.
Fig. 4 illustrates the 3rd schematic diagram of Uu link according to embodiment of the present invention and Ua link duplex mode.
Fig. 5 illustrates the 4th schematic diagram of Uu link according to embodiment of the present invention and Ua link duplex mode.
Fig. 6 illustrates the structural representation of the WAP (wireless access point) according to embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
See Fig. 1, illustrate the schematic diagram of the up-downgoing data transmission method according to embodiment of the present invention, described method comprises:
S100, WAP (wireless access point) WAP are by Uu link access evolution base station eNB;
S102, described WAP set up the up-downgoing transfer of data between eNB on Uu link;
The special frequency domain resource that S104, described WAP utilize eNB to distribute on Ua link and low-cost user equipment LUE carry out up-downgoing transfer of data.
In the embodiment of the present invention, the system of application up-downgoing data transmission method comprises evolution base station eNB, WAP (wireless access point) (Wireless Access Point, and low-cost user equipment (Low-cost UserEquipment, LUE) WAP).WAP in embodiment of the present invention replaces LUE to access eNB, converge the up-downgoing data of LUE, for upstream data, upstream data is first sent to WAP by LUE, then the upstream data of multiple LUE is packaged into a MAC PDU (Media Access Control Protocol DataUnit by WAP, media access control protocol data unit) adopt high order modulation coded system to be sent to eNB afterwards, the data of multiple LUE can take identical running time-frequency resource.In high order modulation, the exponent number of modulation is higher, and the information of transmitted per unit time is more, and correspondingly, message transmission rate is also higher.High order modulation in embodiment of the present invention can adopt 16QAM (Quadrature Amplitude Modulation, orthogonal amplitude keying), 64QAM.In some other execution mode of the present invention, higher order of modulation can be selected, such as 128QAM or 256QAM.High-order coding in embodiment of the present invention can to adopt on 1ms (millisecond) frequency domain the bit number of transmission in 1 PRB (Physical Resource Block, Physical Resource Block) to be 56 or 72 etc.In embodiment of the present invention, the higher and position of WAP (wireless access point) WAP ability is fixed, and its channel condition is more stable, can select the modulation coding mode of relative high-order, improves message transmission rate.For downlink data, eNB is sent to WAP after the downlink data of multiple LUE being packaged into a MAC PDU, and the data of multiple LUE take identical running time-frequency resource, the downlink data decoding that eNB sends by WAP, and the data that each LUE decoded is relevant are sent to each LUE.WAP is the data that LUE converges up-downgoing, replaces LUE to access eNB, significantly improves the utilance of Internet resources.And the coverage of WAP is less, be generally limited to the covering of indoor distances, transmitting power is less, can greatly simplify compared with eNB, and thus the cost of WAP can greatly reduce compared with eNB, is very suitable for the application of M2M scene.LUE can be the equipment of ability lower than the common UE of LTE, and it is M2M equipment normally.The function that LUE supports is less than common UE, and therefore its cost is lower.Therefore LUE structure is usually simple than common UE, and power consumption is also lower.This LUE can not possess the function of access eNB, and only can access WAP.Uu link is the link between WAP and eNB, and UE is by this link access WAP.Ua link is the link between WAP and subordinate LUE, and WAP by the data of this link aggregation from LUE, and issues downlink data to LUE.
WAP (wireless access point) WAP communicates with eNB according to Uu air protocol, and particularly, WAP, according to the possible position scan-synchronized signal of frequency range centered carrier, obtains the down-going synchronous with eNB, receiving control information etc.WAP is by wireless heterogeneous networks (the Radio Resource Control between WAP and eNB, RRC) dedicated signaling obtains the special frequency domain resource that eNB is the Ua link assignment of WAP and LUE, and wherein special frequency domain resource comprises bandwidth, frequency domain position etc.The frequency domain resource of Ua link is that LUE is special, and this part frequency domain resource scheduling can not use to the common UE of LTE by eNB, and eNB is the special frequency domain resource of Ua link assignment, can avoid the interference between two links.ENB can also configure identical Ua link private resource for distant WAP, makes these frequency domain resource can be multiplexing between the Ua link of different WAP, thus improves the utilance of frequency spectrum resource.When WAP and eNB does up-downgoing transfer of data, the upstream data of its subordinate LUE is packaged into a MAC PDU and is sent to eNB by WAP.WAP receives from after the descending MAC PDU of eNB, resolves, and obtains the downlink data of LUE, and transmit this downlink data to described LUE to this MAC PDU.The packet of multiple LUE can be packetized in a MAC PDU and to be uploaded to eNB or WAP can will resolve the packet delivery that obtain to multiple LUE.
Uu link between WAP and eNB and the Ua link between WAP and LUE can use identical up-downgoing duplex mode, such as FDD or TDD.Basic based on uplink service under considering M2M scene, and in existing FDD or TDD proportioning descending sub frame more than sub-frame of uplink, be applied directly to M2M scene and can cause the wasting of resources, can FDD system be changed into TDD system by WAP, become sub-frame of uplink more than the proportioning pattern of descending sub frame more than the proportioning Mode change of sub-frame of uplink TDD descending sub frame, thus improve the efficiency of transmission system.
See Fig. 2, illustrate the first schematic diagram of Uu link according to embodiment of the present invention and Ua link duplex mode, wherein UL represents up link, DL represents down link, Uu link between WAP and eNB adopts FDD, WAP uses the first frequency range f1 to send upstream data (as the transverse axis f arrow vertically upward relative to WAP in Fig. 2 is schematically shown) to eNB, WAP uses the second frequency range f2 reception from the downlink data (as the transverse axis f arrow vertically downward relative to WAP in Fig. 2 is schematically shown) of eNB, wherein, f1 is not equal to f2.Ua link between WAP and LUE also adopts FDD, WAP can use the first frequency range f1 as downlink transfer frequency range (as the transverse axis f arrow vertically downward relative to LUE in Fig. 2 is schematically shown), uses the second frequency range f2 as uplink frequency range (as the transverse axis f arrow vertically upward relative to LUE in Fig. 2 is schematically shown).While WAP uses frequency range f1 to send data by Uu chain road direction eNB, frequency range f1 can also be used to send downlink data by Ua chain road direction LUE, in like manner, while WAP uses frequency range f2 to receive the data of eNB transmission by Uu link, the upstream data that frequency range f2 is sent by Ua link reception LUE can also be used.Article two, the data of link use different orthogonal sub-carriers, guarantee that the interference between two links is minimum.
See Fig. 3, illustrate the second schematic diagram of Uu link according to embodiment of the present invention and Ua link duplex mode, Uu link between WAP and eNB adopts FDD, WAP uses the first subframe in the first frequency range f1 (subframe as corresponding relative to the transverse axis f arrow vertically upward of WAP in Fig. 3) to send upstream data to eNB, use the second frequency range f2 reception from the downlink data of eNB, wherein, f1 is not equal to f2.Ua link between WAP and LUE adopts TDD, uses the first frequency range f1 to carry out transfer of data.The proportioning of TDD can be determined according to traffic performance, the proportioning selecting sub-frame of uplink more under M2M scene, such as TDD configuration 6.According to the method that the embodiment of the present invention provides, while first subframe of WAP in use first frequency range f1 sends upstream data to eNB, (in as Fig. 3, the transverse axis of LUE is marked with the subframe of D to first subframe that can utilize in the first frequency range f1 on Ua link, wherein D represents downlink transfer) send downlink data to LUE, the second subframe (as in Fig. 3, the transverse axis of LUE is marked with the subframe of U, wherein U the represents uplink) reception in the first frequency range f1 can be utilized from the upstream data of LUE.The second subframe in embodiment of the present invention is not equal to the first subframe, and the second subframe can be the subframe except the first subframe.It should be noted that; being marked with S subframe at LUE transverse axis is special subframe (Special Subframe), and S subframe can comprise three territory: DwPTS (descending pilot frequency time slot), GP (protection interval) and UpPTS (uplink pilot time slot).That adopt due to Uu link is FDD, and it can not know the existence of special subframe, so do not transmit the descending of Uu link in this subframe, and in the DwPTS transmitting downlink data of Ua link, UpPTS transmit ascending data, GP is as the up-downgoing switching time of LUE.
See Fig. 4, illustrate the 3rd schematic diagram of Uu link according to embodiment of the present invention and Ua link duplex mode, Uu link between WAP and eNB adopts TDD configuration 2, Ua link between WAP and LUE also adopts TDD, wherein U represents uplink, D represents downlink transfer, WAP can use the first subframe (as in Fig. 4, the transverse axis of WAP indicates the subframe of U) to send upstream data to eNB, uses the second subframe (as in Fig. 4, the transverse axis of WAP indicates the subframe of D) reception from the downlink data of eNB.Meanwhile, WAP can use described first subframe (as in Fig. 4, the transverse axis of LUE indicates the subframe of D) to send downlink data, uses described second subframe (as in Fig. 4, the transverse axis of LUE indicates the subframe of U) reception from the upstream data of LUE.What the TDD of Ua link adopted can regard new TDD configuration as; its special subframe can adopt corresponding new configuration; particularly; as the UpPTS of Ua link in the DwPTS subframe time section of Uu link; in like manner; as the DwPTS time period of Ua link in the UpPTS subframe time section of Uu link, GP is the guard time switched as up-downgoing.
See Fig. 5, illustrate the 4th schematic diagram of Uu link according to embodiment of the present invention and Ua link duplex mode, WAP uses the first frequency range f1 to send upstream data to eNB, use the first subframe in the second frequency range f2 (as in Fig. 5 relative to the subframe of the transverse axis of WAP arrow indication vertically downward) receive downlink data from eNB.Ua link between WAP and LUE adopts TDD 6, use the second frequency range f2, according to method provided by the invention, while first subframe of WAP in use second frequency range f2 receives the downlink data from eNB, the first subframe (as in Fig. 5, LUE transverse axis is marked with the subframe of the U) reception in described second frequency range f2 can be used from the upstream data of LUE, and WAP can use the second subframe (as in Fig. 5, LUE transverse axis is marked with the subframe of D) in the second frequency range f2 to send downlink data to LUE.It should be noted that, due to the employing of Uu link is FDD, and it can not know the existence of special subframe, so do not transmit the downlink data of Uu link in this subframe, and in the DwPTS transmitting downlink data of Ua link, UpPTS transmit ascending data, GP is as the up-downgoing switching time of LUE.
In the embodiment shown in above-mentioned Fig. 2 to Fig. 4, the special frequency domain resource of Ua link can be obtained by the radio resource control RRC dedicated signaling between WAP and eNB, or, can also be obtained by the broadcast message of eNB, particularly, broadcasted by eNB, WAP carries out energy measuring in all possible special frequency domain resource, select one not by the special frequency domain resource that the uses special frequency domain resource as Ua link, thus avoid interference.In the above-described embodiment, when WAP moves, the special frequency domain resource of the Ua link of two WAP may be made to interfere with each other by originally not disturbing to become, when WAP detects the strong jamming of Ua link, WAP can by energy detection scan eNB by the special frequency domain resource of all available Ua link of Uu link broadcast, selects one not have noisy special frequency domain resource as the new frequency domain private resource of Ua link.
In the embodiment shown in fig. 5, WAP obtains the special frequency domain resource of the Ua link that eNB clearly indicates by the special RRC signaling between this WAP and eNB, to avoid interference better, this is due in this kind of embodiment, eNB, before the descending sub frame of Uu link, N (N <=3) individual OFDM symbol sends down control channel always, and WAP cannot use energy measuring to determine whether the special frequency domain resource of Ua link is taken by other WAP.In the present embodiment, WAP can utilize private downlink frequency domain resource additionally to send frequency range locking signal on Ua link, lock this frequency range for LUE and access corresponding WAP, wherein said frequency range locking signal can be Zadoff-Chu (ZC) sequence of regular length, the control domain resource of Uu link is avoided during resource mapping, and ZC sequence is different from the synchronizing signal used in existing protocol, can guarantee that the common UE of LTE can not access WAP like this.In the present embodiment, when WAP moves, the special frequency domain resource of the Ua link of two WAP may be made to interfere with each other by originally not disturbing to become, when WAP detects the strong jamming of Ua link, WAP is by the up MAC-CE of Uu link (Media Access Control-Control Element, medium education-control unit) dedicated signaling instruction eNB strong jamming information, the special frequency domain resource of the Ua link namely indicating eNB originally to be distributed by RCC dedicated signaling has been in strong jamming state, then eNB can reshuffle signaling by RRC and again distributes new special frequency domain resource to WAP, WAP obtains eNB and reshuffles by RRC the new special frequency domain resource that signaling redistributes.
In an embodiment of the present invention, WAP detects the strong jamming of Ua link and after obtaining new glitch-free special frequency domain resource, notifies that the LUE that this WAP serves carries out frequency error factor, be switched in new special frequency domain resource.Particularly, the special frequency domain resource that each LUE indicating this WAP to serve by beep-page message is new, namely beep-page message is sent to each LUE, the position that parameter indicates new special frequency domain resource is carried in beep-page message, and after the time preset, make new special frequency domain resource position come into force, the described time preset can be that system information (System Information, SI) revises the cycle, also can be several times of paging cycle.It should be noted that, those skilled in the art can need to arrange the time preset according to application, the setting of this time are not limited to the execution mode related in the present embodiment.It is synchronous that described special frequency domain resource newly can be used for obtaining with this WAP by LUE, and with the up-downgoing transfer of data of described WAP.
Alternatively, eNB can pass through locating information, determines the frequency domain resource of multiplexing Ua link between WAP far away, when the resource of Ua link needs to change, is reshuffled the resource instruction of the new Ua link of signaling WAP by RRC; WAP is not needed to scan optional Ua link or report disturbed condition.
In the embodiment of the present invention, low-cost user equipment LUE carries out band scan according to all possible positions of special frequency domain resource of Ua link, obtains the WAP point of LUE access, and the Frequency Synchronization of acquisition and this WAP point.In the embodiment shown in fig. 5, if the control domain resource having eNB to send in Ua link private downlink frequency range, so LUE frequency range locking signal that WAP can be utilized to send, accesses the Microcell that this WAP is formed, and obtains the down time-frequency synchronization with this WAP.After LUE is linked into the Microcell of WAP formation, receive the broadcast message of this WAP Microcell that WAP sends.The coverage of WAP is less, be generally less than 100 meters, the uplink synchronous of LUE and WAP does not need to use TA (Time Alignment, time unifying), and do not need to keep down-going synchronous with WAP, only need WAP and LUE all to keep down-going synchronous with eNB.Ua link cancels RACH (Random Access Channel, Random Access Channel), each LUE distributes SR (SchedulingRequest, dispatch request) resource, when LUE need send upstream data and the ascending resource of with no authorized time, first LUE sends SR request resource, and after receiving the ascending resource of WAP mandate, the ascending resource that recycling is authorized sends upstream data.
WAP sends periodic uplink transmissions scheduling of resource parameter or/and scheduling downlink resource parameter is to LUE, so that LUE is according to the ascending resource of periodic uplink transmissions scheduling of resource parameter determination transmit ascending data and transformat, periodic uplink transmissions scheduling of resource parameter comprises: the position of ascending resource in time-domain dimension, frequency domain dimension and the transformat of upstream data; By periodic uplink transmissions scheduling of resource parameter is sent to LUE, so that LUE is according to the ascending resource of periodic uplink transmissions scheduling of resource parameter determination transmit ascending data and transformat, and do not need to detect PDCCH, thus reduce the complexity of scheduling of resource, LUE is economized on electricity more.WAP sends periodic uplink transmissions scheduling of resource parameter or/and scheduling downlink resource parameter is to LUE by high-rise RRC dedicated signaling; When periodic uplink transmissions scheduling of resource parameter or/and when scheduling downlink resource parameter upgrades, send the periodic uplink transmissions scheduling of resource parameter of renewal or/and scheduling downlink resource parameter is to LUE by the signaling of reshuffling of RRC.
In the embodiment of the present invention, WAP (wireless access point) WAP is receiving upstream data that LUE sends and after sending scheduling downlink resource parameter to LUE, WAP feeds back joint instructions information to LUE, joint instructions information comprises uplink retransmission instruction and descending instruction, whether uplink retransmission instruction is used to indicate has upstream data to need to retransmit, and whether descending instruction is used to indicate has downlink data to need transmission.Particularly, uplink retransmission is designated as ACK/NACK, ACK is for confirming (Acknowledgement), namely instruction does not have upstream data to need to retransmit, NACK is the confirmation (Negative Acknowledgement) of negative, namely instruction has upstream data to need to retransmit, and a bit represents ACK/NACK result here, and another bit represents descending instruction.If do not have upstream data to need to retransmit, then within this cycle, use to other UE the ascending resource scheduling of configuration.According to joint instructions information, LUE has determined whether that upstream data needs to retransmit and whether have downlink data to need transmission.If do not have upstream data to need to retransmit and do not have downlink data to need transmission, then the direct shutter transceiver of LUE, enters sleep state, until the next cycle.If there is upstream data to need to retransmit, LUE, then after the joint instructions information receiving WAP feedback, retransmits upstream data to WAP according to the position of ascending resource in ascending resource scheduling parameter in frequency domain dimension and transformat.If there is downlink data to need transmission, WAP then, after feedback joint instructions information to LUE, sends downlink data to WAP.Particularly, if having sent scheduling downlink resource parameter to LUE, then the transformat of the position of the downlink resource determined according to scheduling downlink resource parameter in frequency domain dimension and downlink data sends downlink data; If do not send scheduling downlink resource parameter to LUE, then send the transformat of the position of downlink resource in frequency domain dimension and downlink data by the mode of PDCCH and send downlink data to LUE.
See Fig. 6, illustrate the structural representation of the WAP (wireless access point) according to embodiment of the present invention, described WAP (wireless access point) 600 can comprise:
Access unit 602, for accessing evolution base station eNB by Uu link;
First transmission unit 604, for setting up the up-downgoing transfer of data between eNB on Uu link;
Second transmission unit 606, carries out up-downgoing transfer of data for the special frequency domain resource that utilizes eNB to distribute on Ua link and low-cost user equipment LUE.
In embodiment of the present invention, the access unit of WAP (wireless access point) WAP communicates with eNB according to Uu air protocol, by Uu link access evolution base station eNB.WAP in embodiment of the present invention replaces LUE to access eNB, converges the up-downgoing data of LUE.LUE can be the equipment of ability lower than common UE, and it is M2M equipment normally.The function that LUE supports is less than common UE, and cost is lower.Therefore LUE structure is usually simple than common UE, and power consumption is also lower.This LUE can not possess the function of access eNB, and only can access WAP.
In the embodiment shown in Figure 2, Ua link and Uu link all adopt FDD, and first transmission unit of WAP (wireless access point) WAP uses the first frequency range f1 to send upstream data to eNB, use the second frequency range f2 reception from the downlink data of eNB.In the present embodiment, while the first transmission unit uses the first frequency range f1 to send upstream data to eNB, the second transmission unit can use described first frequency range f1 to send downlink data to LUE; While the downlink data that the first transmission unit uses the second frequency range f2 to receive from eNB, the second transmission unit can use the second frequency range f reception from the upstream data of LUE.
In the embodiment shown in fig. 3, Uu link adopts FDD, Ua link to adopt TDD 6, uses the first frequency range.First transmission unit uses first subframe of the first frequency range f1 to send upstream data to eNB, uses the second frequency range f2 reception from the downlink data of eNB.In the present embodiment, while the first transmission unit uses first subframe of the first frequency range f1 to send upstream data to eNB, the second transmission unit can use first subframe of the first frequency range f1 to send downlink data to LUE.Second transmission unit can use the second subframe in the first frequency range f1 to receive the upstream data from LUE, and wherein the second subframe is different from the first subframe, can be the subframe except the first subframe.
In the embodiment shown in fig. 4, Uu link and Ua link all adopt TDD, and Uu link adopts TDD2.In the present embodiment, the first transmission unit uses the first subframe to send upstream data to eNB, and use the second subframe reception from the downlink data of eNB, wherein the second subframe is not equal to the first subframe, can be the subframe except the first subframe.In the present embodiment, while the first transmission unit uses the first subframe to send upstream data to eNB, the second transmission unit can use the first subframe to send downlink data to LUE; While the downlink data that the first transmission unit uses the second subframe to receive from eNB, the second transmission unit can use the second subframe reception from the upstream data of LUE.
Adopt FDD, Ua link to adopt TDD 6 see Fig. 5, Uu link, use the second frequency range f2.First transmission unit uses the first frequency range f1 to send upstream data to eNB, uses the first subframe reception in the second frequency range f2 from the downlink data of eNB.In the present embodiment, while first transmission unit uses the first subframe in the second frequency range f2 to receive the downlink data from eNB, second transmission unit can use the first subframe reception in the second frequency range f2 from the upstream data of LUE, and second transmission unit the second subframe in the second frequency range f2 can be used to send downlink data to LUE, wherein the second subframe is not equal to the first subframe, can be the subframe except the first subframe.
WAP in embodiment of the present invention is except comprising said units, private resource acquiring unit can also be comprised, private resource acquisition module obtains special frequency domain resource by the dedicated radio resources control RRC signaling between WAP and eNB, or, special frequency domain resource can also be obtained by the broadcast message of eNB, particularly, all possible special frequency domain resource of eNB broadcast carries out energy measuring, select one not by the special frequency domain resource that the uses special frequency domain resource as Ua link.
Further, the WAP of embodiment of the present invention can also comprise interference indicating member, when WAP detects that the special frequency domain resource of Ua link is in disturbance state, interference indicating member is by being in disturbed state by medium education-its special frequency domain resource of originally distributing of control unit MAC-CE dedicated signaling instruction eNB.ENB, after the indication information receiving interference indicating member, will redistribute new special frequency domain resource.Private resource acquiring unit in present embodiment can obtain eNB and reshuffle by RRC the new special frequency domain resource that signaling redistributes.
Private resource acquiring unit in embodiment of the present invention, after getting new special frequency domain resource, indicate new special frequency domain resource by beep-page message to described LUE, new special frequency domain resource can be used for by the LUE that this WAP serves obtaining with the synchronous of this WAP and with the up-downgoing transfer of data of described WAP.
WAP in embodiment of the present invention can also comprise locking indicating member, and the LUE that locking indicating member is served to this WAP sends frequency range locking signal, and described frequency range locking signal may be used for described LUE and locks described special frequency domain resource and access this WAP.Described frequency range locking signal can be Zadoff-Chu (ZC) sequence of regular length, the control domain resource of Uu link is avoided during resource mapping, and ZC sequence is different from the synchronizing signal used in existing protocol, can guarantee that the common UE of LTE can not access WAP like this.
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in a computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
Above disclosedly be only a kind of preferred embodiment of the present invention, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.
Claims (16)
1. a up-downgoing data transmission method, is characterized in that, described method comprises:
WAP (wireless access point) WAP is by Uu link access evolution base station eNB;
Described WAP sets up the up-downgoing transfer of data between eNB on Uu link;
The special frequency domain resource that described WAP utilizes eNB to distribute on Ua link and low-cost user equipment LUE carry out up-downgoing transfer of data;
Wherein, described method also comprises:
Described WAP is in disturbed state by special frequency domain resource described in medium education-control unit MAC-CE dedicated signaling instruction eNB;
Described WAP obtains described eNB and reshuffles by RRC the new special frequency domain resource that signaling redistributes.
2. the method for claim 1, is characterized in that, described WAP up-downgoing transfer of data set up between eNB on Uu link comprises:
Described WAP uses the first frequency range to send upstream data to eNB, uses the second UHF band reception from the downlink data of eNB;
The special frequency domain resource that described WAP utilizes eNB to distribute on Ua link and low-cost user equipment LUE carry out up-downgoing transfer of data and comprise:
Described WAP uses described first frequency range to send downlink data to LUE, uses described second UHF band reception from the upstream data of LUE.
3. the method for claim 1, is characterized in that, described WAP up-downgoing transfer of data set up between eNB on Uu link comprises:
Described WAP uses the first subframe in the first frequency range to send upstream data to eNB, uses the second UHF band reception from the downlink data of eNB;
The special frequency domain resource that described WAP utilizes eNB to distribute on Ua link and low-cost user equipment LUE carry out up-downgoing transfer of data and comprise:
Described WAP utilizes the first subframe in the first frequency range to send downlink data to LUE on this Ua link, utilizes the second subframe reception in the first frequency range from the upstream data of LUE.
4. the method for claim 1, is characterized in that, described WAP up-downgoing transfer of data set up between eNB on Uu link comprises:
Described WAP uses the first subframe to send upstream data to eNB, uses the second subframe reception from the downlink data of eNB;
The special frequency domain resource that described WAP utilizes eNB to distribute on Ua link and low-cost user equipment LUE carry out up-downgoing transfer of data and comprise:
Described WAP uses described first subframe to send downlink data to LUE, uses described second subframe reception from the upstream data of LUE.
5. the method for claim 1, is characterized in that, described WAP up-downgoing transfer of data set up between eNB on Uu link comprises:
Described WAP uses the first frequency range to send upstream data to eNB, uses the first subframe reception in the second frequency range from the downlink data of eNB;
The special frequency domain resource that described WAP utilizes eNB to distribute on Ua link and low-cost user equipment LUE carry out up-downgoing transfer of data and comprise:
Described WAP uses the second subframe in the second frequency range to send downlink data to LUE, uses the first subframe reception in described second frequency range from the upstream data of LUE.
6. the method as described in claim 1 to 5 any one, is characterized in that, also comprises:
Described WAP obtains described special frequency domain resource by the dedicated radio resources control RRC signaling between this WAP and eNB, or, obtain described special frequency domain resource by the broadcast message of eNB.
7. the method for claim 1, is characterized in that, also comprises:
Described WAP indicates new special frequency domain resource by beep-page message to described LUE, described special frequency domain resource newly by described LUE for obtain with the synchronous of this WAP and with the up-downgoing transfer of data of described WAP.
8. method as claimed in claim 7, it is characterized in that, described method also comprises:
Described WAP sends frequency range locking signal to described LUE, is used to indicate described LUE and locks described special frequency domain resource and access this WAP.
9. a WAP (wireless access point) WAP, is characterized in that, comprising:
Access unit, for accessing evolution base station eNB by Uu link;
First transmission unit, for setting up the up-downgoing transfer of data between eNB on Uu link;
Second transmission unit, carries out up-downgoing transfer of data for the special frequency domain resource that utilizes eNB to distribute on Ua link and low-cost user equipment LUE;
Wherein, described WAP also comprises interference indicating member and private resource acquiring unit, wherein:
Described interference indicating member, for being in disturbed state by special frequency domain resource described in medium education-control unit MAC-CE dedicated signaling instruction eNB;
Described private resource acquiring unit, reshuffles by RRC the new special frequency domain resource that signaling redistributes for obtaining described eNB.
10. WAP as claimed in claim 9, is characterized in that, described first transmission unit, for using the first frequency range to send upstream data to eNB, using the second UHF band reception from the downlink data of eNB;
Described second transmission unit, for using described first frequency range to send downlink data to LUE, uses described second UHF band reception from the upstream data of LUE.
11. WAP as claimed in claim 9, is characterized in that, described first transmission unit, for using the first subframe in the first frequency range to send upstream data to eNB, use the second UHF band reception from the downlink data of eNB;
Described second transmission unit, for utilizing the first subframe in the first frequency range to send downlink data to LUE on this Ua link, utilizes the second subframe reception in the first frequency range from the upstream data of LUE.
12. WAP as claimed in claim 9, is characterized in that, described first transmission unit, for using the first subframe to send upstream data to eNB, use the second subframe reception from the downlink data of eNB;
Described second transmission unit, for using described first subframe to send downlink data to LUE, uses described second subframe reception from the upstream data of LUE.
13. WAP as claimed in claim 9, is characterized in that, described first transmission unit, for using the first frequency range to send upstream data to eNB, use the first subframe reception in the second frequency range from the downlink data of eNB;
Described second transmission unit, for using the second subframe in the second frequency range to send downlink data to LUE, uses the first subframe reception in described second frequency range from the upstream data of LUE.
14. WAP as described in any one of claim 9 to 13, is characterized in that, also comprise:
Private resource acquiring unit, for obtaining described special frequency domain resource by the dedicated radio resources control RRC signaling between this WAP and eNB, or, obtain described special frequency domain resource by the broadcast message of eNB.
15. WAP as claimed in claim 9, it is characterized in that, described private resource acquiring unit, also for indicating new special frequency domain resource by beep-page message to described LUE, described special frequency domain resource newly by described LUE for obtain with the synchronous of this WAP and with the up-downgoing transfer of data of described WAP.
16. WAP as claimed in claim 15, is characterized in that, also comprise:
Locking indicating member, for sending frequency range locking signal to described LUE, being used to indicate described LUE and locking described special frequency domain resource and access this WAP.
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| CN201110377894.2A CN103139869B (en) | 2011-11-24 | 2011-11-24 | A kind of up-downgoing data transmission method and WAP (wireless access point) |
| PCT/CN2012/085219 WO2013075665A1 (en) | 2011-11-24 | 2012-11-24 | Up/downlink data transmission method and wireless access point |
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| CN201110377894.2A CN103139869B (en) | 2011-11-24 | 2011-11-24 | A kind of up-downgoing data transmission method and WAP (wireless access point) |
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| CN110061771A (en) * | 2018-09-25 | 2019-07-26 | 中国信息通信研究院 | A kind of relay communication method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101237685A (en) * | 2007-01-30 | 2008-08-06 | 西门子通信技术（北京）有限公司 | Route changing method in wireless communication |
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| CN101237685A (en) * | 2007-01-30 | 2008-08-06 | 西门子通信技术（北京）有限公司 | Route changing method in wireless communication |
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