CN102045779A - Relay method, equipment and system - Google Patents
Relay method, equipment and system Download PDFInfo
- Publication number
- CN102045779A CN102045779A CN2009101805327A CN200910180532A CN102045779A CN 102045779 A CN102045779 A CN 102045779A CN 2009101805327 A CN2009101805327 A CN 2009101805327A CN 200910180532 A CN200910180532 A CN 200910180532A CN 102045779 A CN102045779 A CN 102045779A
- Authority
- CN
- China
- Prior art keywords
- mode
- repeater
- base station
- fdd
- frequency division
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2603—Arrangements for wireless physical layer control
- H04B7/2606—Arrangements for base station coverage control, e.g. by using relays in tunnels
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15564—Relay station antennae loop interference reduction
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2643—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]
- H04B7/2656—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA] for structure of frame, burst
Abstract
The invention discloses a relay method, relay equipment and a relay system, and relates to the technical field of communication. The invention effectively solves the loop back self-interference problem during executing relay, does not need to reserve specific system resources or increase extra relay equipment, furthest increases the capacity of the system, and reduces the cost and consumption of the system. The relay method provided by the embodiment of the invention comprises that: an improved repeater performs communication with a base station by adopting a first mode; when the communication is performed between the improved repeater and the base station by adopting the first mode, communication is performed between the improved repeater and a terminal served by the improved repeater by adopting a second mode; the first mode is a time division duplex mode, and the second mode is a frequency division duplex mode; or the first mode is a frequency division duplex mode, and the second mode is a time division duplex mode. The embodiment of the invention is suitable for communication systems such as long term evolution (LTE) and long term evolution access (LTE-A) systems in the occasions needing relay.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of trunking method, equipment and system.
Background technology
Because relaying (Relay) technology can provide good user to cover and high data throughout, has obtained extensive use in mobile communication technology.
In relay system, the link between base station and the repeater is referred to as the relaying back haul link, and the link between the terminal of repeater and this relay services is referred to as the relaying access link.The base station sends downlink data packet by the relaying back haul link to repeater, and receives the upstream data bag that repeater sends; Repeater sends downlink data packet by the relaying access link to its terminal of serving, and receives the upstream data bag that corresponding terminal sends.
In realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art:
Because relaying back haul link and relaying access link adopt same link, when repeater is received and dispatched communication simultaneously, can cause the winding self-interference, influence the normal transmitting-receiving of data, cause the effect of relaying relatively poor, can't satisfy user's needs.
Summary of the invention
For solving problems of the prior art, embodiments of the invention provide a kind of trunking method, equipment and system, can avoid the winding self-interference problem in the relay processes, realize high-quality trunking traffic, satisfy user's needs.
For achieving the above object, embodiments of the invention adopt following technical scheme:
The embodiment of the invention provides a kind of trunking method, and described method comprises:
Improved repeater adopts first mode and base station to communicate;
When between described improved repeater and described base station, adopting first mode to communicate, adopt second mode to communicate between the terminal that described improved repeater and this improved repeater are served;
Wherein, described first mode is a time division duplex, and described second mode is the Frequency Division Duplexing (FDD) mode; Perhaps, described first mode is the Frequency Division Duplexing (FDD) mode, and described second mode is a time division duplex.
The embodiment of the invention also provides a kind of repeater, and described repeater comprises: first TU Trunk Unit is used to adopt first mode and base station to communicate; Second TU Trunk Unit is used for communicating between the terminal that adopts second mode and described repeater to serve when described first TU Trunk Unit and base station adopt first mode to communicate;
Wherein, described first mode is a time division duplex, and described second mode is the Frequency Division Duplexing (FDD) mode; Perhaps, described first mode is the Frequency Division Duplexing (FDD) mode, and described second mode is a time division duplex.
The embodiment of the invention also provides a kind of communication system, and this system comprises the terminal that base station, repeater and this repeater are served,
When adopting first mode to communicate between described repeater and the described base station, adopt second mode to communicate between described repeater and the described terminal; Wherein, described first mode is a time division duplex, and described second mode is the Frequency Division Duplexing (FDD) mode; Perhaps, described first mode is the Frequency Division Duplexing (FDD) mode, and described second mode is a time division duplex.
The technical scheme that the embodiment of the invention provides, by working in coordination of time division duplex and Frequency Division Duplexing (FDD) mode realized between base station and the repeater, communication between repeater and the relevant terminal, efficiently solve the winding self-interference problem in the relay system, realize high-quality trunking traffic, satisfied user's needs.And, the technical scheme of the embodiment of the invention has made full use of the resource of existing tdd systems and frequency division duplex system, need not to reserve specific system resource when in commission continuing, also need not to set up extra trunking, farthest increase the capacity of system, reduced the cost and the consumption of system.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
A kind of time division way that Fig. 1 provides for the embodiment of the invention is avoided the schematic diagram of winding self-interference;
Utilize TDD/FDD to realize the schematic diagram of relaying in the band in the FDD LTE system that Fig. 2 provides for the embodiment of the invention two;
Utilize TDD/FDD to realize the schematic diagram of relaying in the band in the TDD LTE system that Fig. 3 provides for the embodiment of the invention two;
Utilize TDD/FDD to realize the schematic diagram of the outer relaying of band in the FDD LTE system that Fig. 4 provides for the embodiment of the invention two;
Utilize TDD/FDD to realize the schematic diagram of the outer relaying of band in the TDD LTE system that Fig. 5 provides for the embodiment of the invention two;
The one-way junction method schematic diagram that Fig. 6 provides for the embodiment of the invention two;
Bandwidth assignment schematic diagram under a kind of one-way junction mode that Fig. 7 provides for the embodiment of the invention two;
The schematic diagram of frame structure under a kind of one-way junction mode that Fig. 8 provides for the embodiment of the invention two;
The schematic diagram of special subframe under a kind of one-way junction mode that Fig. 8 A provides for the embodiment of the invention two;
The schematic diagram of special subframe under a kind of one-way junction mode that Fig. 8 B provides for the embodiment of the invention two;
The trunking method principle schematic that Fig. 9 provides for the embodiment of the invention two;
The bandwidth assignment schematic diagram that Figure 10 provides for the embodiment of the invention two;
A kind of frame structure schematic diagram that Figure 11 provides for the embodiment of the invention two;
The another kind of frame structure schematic diagram that Figure 12 provides for the embodiment of the invention two;
A kind of repeater schematic diagram that Figure 13 A provides for the embodiment of the invention three;
The another kind of repeater schematic diagram that Figure 13 B provides for the embodiment of the invention three;
The structural representation of a kind of trunking traffic module that Figure 14 provides for the embodiment of the invention three;
The structural representation of another trunking traffic module that Figure 15 provides for the embodiment of the invention three.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
For the winding self-interference, a solution that the embodiment of the invention provides is to adopt time division duplex (TDD) mode, on time domain two links is distinguished, and promptly allows repeater not receive and dispatch simultaneously.For example, referring to Fig. 1, Long Term Evolution (Long Term Evolution, LTE) in the system, reserving multicast single frequency network (Multi-media Broadcast over a SingleFrequency Network, MBSFN) subframe in the wireless frame structure of repeater configurations, at MBSFN subframe place, only carry out communicating by letter of base station and repeater (NB-to-relay), at other non-MBSFN subframe place, repeater and relevant terminal (relay-to-UE) communicate.
Yet, when adopting this mode, because the use of MBSFN subframe, taken the resource of system, limited the capacity of system.For example, because the physical resource of reserving for the MBSFN subframe is used alone as the communication of base station to repeater, can not when needs elevator system capacity, limit the lifting of power system capacity again as the communication of repeater to terminal; And owing to need consider the process that the MBSFN subframe is mixed automatic repeat requests (HARQ) between base station, repeater and terminal three simultaneously, it is complicated to cause HARQ to coordinate, and time delay increases, and has limited the capacity and the number of users of repeater node.
The another kind of solution that the embodiment of the invention provides is Frequency Division Duplexing (FDD) (FDD) mode, this mode is that repeater has disposed the microwave back haul system with special proprietary protocol separately, and the extra frequency range of this microwave back haul system utilization realizes the communication of base station to repeater.
Yet this mode only is applied in the microwave back haul system at present, belongs to point-to-point transmission means, and every relaying back haul link all needs a cover backhaul transceiver, for having a plurality of relay node, has increased the base station equipment cost undoubtedly greatly.And, microwave frequency band is used for repeated link after, channel quality is still relatively poor, does not reach the sighting distance requirement far away, can not achieve the desired result.
Therefore, the embodiment of the invention provides a kind of trunking method, can avoid the winding self-interference problem in the relay processes, realizes high-quality trunking traffic, satisfies user's needs, and Details as Follows:
The embodiment of the invention one provides a kind of trunking method, and described method comprises:
Improved repeater adopts first mode and base station to communicate;
When between described improved repeater and described base station, adopting first mode to communicate, adopt second mode to communicate between the terminal that described improved repeater and this improved repeater are served;
Wherein, described first mode is the TDD mode, and described second mode is the FDD mode; Perhaps, described first mode is the FDD mode, and described second mode is the TDD mode.
The communicating by letter of data on frequency-division section and frequency division frequency range when the improved repeater among the present invention need be supported simultaneously hereinafter unifiedly abbreviates improved repeater as repeater.
The trunking method that the embodiment of the invention provides can be applicable to LTE system, the senior (LTEAdvanced of Long Term Evolution, LTE-A) system, but be not limited to this, the backhaul that the embodiment of the invention can also be used for the access device under the common networking scene of other access devices and macro base station is connected, backhaul as Micro, Pico and Femeto connects, also can be used for the working method of two kinds of dual-mode system mixed networking in follow-up LTE-A system and other wireless communication systems, also can be used for the working method of the common networking of different frequency range system under the identical dual-mode etc.
Be appreciated that in different communication systems carrying out the equipment that above-mentioned trunking method participates in may be different, for example, described method can for:
Between base station of evolution (eNB) and repeater, adopt first mode to communicate; Between the terminal that described repeater and this repeater are served, adopt second mode to communicate; Wherein, described first mode is the TDD mode, and described second mode is the FDD mode; Perhaps, described first mode is the FDD mode, and described second mode is the TDD mode.And, repeater need be supported the processing of data under the processing of data under the TDD mode and the FDD mode simultaneously, and under the TDD mode with the FDD mode under the communicating by letter of corresponding data, to guarantee in relaying back haul link and the relaying access link normal transmission of data during relaying in different ways respectively.Identical description is equally applicable to related content hereinafter.
The technical scheme that the embodiment of the invention provides, by working in coordination of TDD mode and FDD mode realized between base station and the repeater, communication between repeater and the relevant terminal, efficiently solve the winding self-interference problem in the relay system, realize high-quality trunking traffic, satisfied user's needs.And, the technical scheme of the embodiment of the invention has made full use of the resource of existing TDD system and FDD system, need not to reserve specific system resource when in commission continuing, and also need not to set up extra trunking, farthest increase the capacity of system, reduced the cost and the consumption of system.
The trunking method that the embodiment of the invention two is provided is elaborated below.The embodiment of the invention two is that example describes with the scene among the LTE mainly.
TDD is identical with the FDD system to a considerable extent in the existing LTE standard agreement, for example, has similar frame structure on the physical layer, have identical pilot frequency design and modulation coding mode, transmission mode, has identical L2 layer user surface protocol stack, have identical L3 protocol stack, similar on the agreement guaranteed communicating on the equipment.The embodiment of the invention need not that the existing equipment in TDD and the FDD system is carried out bigger hardware and changes, the base station of finishing evolution by working in coordination of this equipment room that communicates to repeater (eNB-relay), repeater to the communication between terminal (relay-UE), avoided the winding self-interference between relaying back haul link and the relaying access link.
Referring to Fig. 2, in the macro base station overlay network that constitutes in FDD LTE system, utilize TDD/FDD to realize the schematic diagram of relaying in the band.In this system, adopt in a like fashion (FDD) between eNB and the repeater and between eNB and the terminal and communicate.When carrying out relaying, provide the trunking traffic of eNB-relay by FDD LTE mode, and utilize TDD LTE mode to realize the communication of relay-UE.
Referring to Fig. 3, in the macro base station overlay network that constitutes in TDD LTE system, utilize TDD/FDD to realize the schematic diagram of relaying in the band.In this system, adopt in a like fashion (TDD) between eNB and the repeater and between eNB and the terminal and communicate.When carrying out relaying, provide the trunking traffic of eNB-relay by TDD LTE mode, and utilize FDD LTE mode to realize the communication of relay-UE.
Referring to Fig. 4, in the macro base station overlay network that constitutes in FDD LTE system, utilize TDD/FDD to realize the schematic diagram of the outer relaying of band.In this system, between eNB and the repeater between (TDD) and eNB and the terminal (FDD) communicate in different ways.When carrying out relaying, provide the trunking traffic of eNB-relay by TDD LTE mode, and utilize FDD LTE mode to realize the communication of relay-UE.
Referring to Fig. 5, in the macro base station overlay network that constitutes in TDD LTE system, utilize TDD/FDD to realize the schematic diagram of the outer relaying of band.In this system, between eNB and the repeater between (FDD) and eNB and the terminal (TDD) communicate in different ways.When carrying out relaying, provide the trunking traffic of eNB-relay by FDD LTE mode, and utilize TDD LTE mode to realize the communication of relay-UE.
From the above mentioned, the communication link at repeater two ends adopts different system spectral resources respectively, the performance loss of having avoided co-channel interference to cause; And, relaying back haul link and relaying access link adopt the TDD/FDD frequency spectrum resource respectively, farthest increased the capacity of original LTE system, effectively utilized simultaneously the more cheap TDD frequency spectrum resource of cost, for example, can TDD relaying coverage mode realize the roaming of TDD single-mode terminal cheaply.
The technical scheme that the embodiment of the invention provides, by working in coordination of TDD mode and FDD mode realized between base station and the repeater, communication between repeater and the relevant terminal, efficiently solve the winding self-interference problem in the relay system, realize high-quality trunking traffic, satisfied user's needs.And, the technical scheme of the embodiment of the invention has made full use of the resource of existing TDD system and FDD system, need not to reserve specific system resource when in commission continuing, and also need not to set up extra trunking, farthest increase the capacity of system, reduced the cost and the consumption of system.
Further, a kind of trunking method that below embodiment of the invention two is provided is elaborated.In the embodiment of the invention two, repeater is supported the one-way transmission of eNB-relay-UE or the one-way transmission of UE-relay-eNB at synchronization, it is the pattern that repeater has adopted a kind of one-way junction (one-way-relay), in first moment, only allow repeater to receive eNB/NB and by second mode data are sent to described terminal by data and this repeater that first mode sends; In second moment, only allow repeater to receive described terminal and by second mode data are sent to described eNB/NB by data and this repeater that first mode sends; Wherein, described first is the different moment with second constantly constantly.
Referring to Fig. 6, the one-way junction method schematic diagram that provides for the embodiment of the invention.
Moment i on the down direction, repeater is supported eNB-＞relay-＞UE downlink communication, promptly eNB-relay downlink communication link takies the FDD downstream spectrum; Relay-UE downlink communication link takies the TDD downstream spectrum;
Moment j on the up direction, repeater support eNB＜-relay＜-the UE uplink communication, promptly eNB-relay uplink communication link takies the FDD uplink spectrum, and relay-UE uplink communication link takies the FDD uplink spectrum.
Wherein, i is the different moment with moment j constantly.At moment i, the carrier frequency of repeater is TDD carrier frequency and the descending carrier frequency of FDD; At moment j, the carrier frequency of repeater is TDD carrier frequency and FDD uplink carrier frequencies.
Repeater switches on TDD carrier frequency point and FDD carrier frequency point carrier wave in difference constantly, so that repeater moment i sends data on the time division duplex frequency range, j sends data on Frequency Division Duplexing (FDD) constantly, perhaps repeater constantly i on the Frequency Division Duplexing (FDD) frequency range, send data, j sends data on time division duplex constantly, and repeater moment i receives data on the time division duplex frequency range, j receives data on Frequency Division Duplexing (FDD) constantly, perhaps, repeater i constantly receives data on the Frequency Division Duplexing (FDD) frequency range, j receives data on time division duplex constantly, thereby has guaranteed that repeater adopts identical frequency range when sending data or receiving data.
Fig. 6 only shows a kind of spectrum allocation may mode, also can be that the link between the eNB-relay takies the TDD frequency spectrum, and the link between the relay-UE takies the FDD frequency spectrum.
Under this mode, the frequency spectrum that is adjacent that the frequency spectrum that adopts during data in emission for fear of repeater adopts when receiving data produces and disturbs, and referring to Fig. 7, is provided with protection frequency band (Guard Band) in TDD frequency band that is adopted and FDD frequency band.
Under this mode, because repeater transceive data simultaneously, the relaying back haul link need carry out corresponding HARQ configuration according to the uplink-downlink configuration of TDD frequency spectrum, and when promptly relaying access link down direction adopted TDD, the relaying back haul link adopted the downlink frame of FDD; Or when relaying access link up direction adopted TDD, the relaying back haul link adopted the uplink frame of FDD.The relaying back haul link can be considered as half-duplex FDD mode to repeater, the relaying back haul link need be according to the TDD uplink downlink configuration modification HARQ sequential of relaying access link, and the corresponding subframe of the TDD of repeater needs and the corresponding subframe of eNB keeps synchronous.
Referring to Fig. 8, show the schematic diagram of frame structure under a kind of one-way junction mode.Be that the scene of configuration (Configure) #1 is that example describes with the tdd frame structure of repeater among Fig. 8.First the row block representation the downlink frame structure under the FDD mode of eNB, second the row block representation uplink frame structure under the FDD mode of eNB, the third line block representation a kind of frame structure of repeater, from left to right square frame of each row has been represented the 0th subframe to the 9 subframes successively.D in the square frame represents that this square frame represented descending sub frame, and U represents that this square frame represented sub-frame of uplink, and S represents that this square frame represented special subframe.Solid arrow among the figure represents that current subframe belongs to synchronously/broadcasting/paging subframe, is the subframe that system must transmit, and dotted arrow is general subframe, as Frame.Arrow represents that downwards this subframe sends on down direction, arrow represents that upwards this subframe sends on up direction.Different filling textures is used to distinguish different subframes in the square frame, square frame with identical filling texture has corresponding relation, for example, repeater is to from the FDD of eNB the descending the 0th, 1 subframe, up the 7th subframe of FDD that can send eNB is fed back or the like, thereby the clear HARQ of relaying back haul link under the one-way junction mode and the HARQ of relaying access link of having shown, HARQ after the configuration can make when described repeater receives descending sub frame from described base station, can on corresponding sub-frame of uplink, feed back, when the base station sends sub-frame of uplink, can confirm from the feedback of base station down subframe simultaneously by receiving.When described repeater when terminal sends descending sub frame, can on corresponding sub-frame of uplink, receive the feedback of self terminal, simultaneously when the sub-frame of uplink that receives self terminal to send, the feedback of descending sub frame that can be by sending to terminal is confirmed.
As shown in Figure 8, repeater receive from eNB synchronously/broadcasting/paging subframe after, the 0th subframe (being filled with square little lattice), the 4th subframe (being filled with the little lattice of rhombus), the 5th subframe (being filled with the oblique lattice of left-hand), the 9th subframe (being filled with the oblique lattice of dextrad) as Fig. 8 first row demonstration, send the synchronous/broadcasting/paging subframe of oneself simultaneously, as the 0th, 1,5,6 subframes of Fig. 8 the third line demonstration.Thereby the TDD subframe that makes repeater is the FDD subframe of eNB synchronously.
Wherein, when the repeater under the one-way junction mode sends special subframe by the TDD mode, because special subframe exists the UPPTS symbol to receive the uplink synchronous data, and this moment, the base station just sent downlink data by the descending sub frame of FDD mode to repeater, so just require repeater also will receive simultaneously, cause the conflict of repeater one-way transmission from the downlink data of base station and the upstream data of terminal.For fear of this conflict, can be the MBSFN subframe at the FDD descending sub frame of corresponding TDD special subframe moment configurating base station, shown in Fig. 8 A, the FDD descending sub frame that will comprise the TDD special subframe correspondence of UPPTS is configured to the MBSFN subframe that is made of Physical Downlink Control Channel subframe (PDCCH) and Physical Multicast Channel (PMCH) subframe, repeater just can not receive the downlink data from the base station in the upstream data that receives self terminal like this, has avoided receiving conflict; Perhaps referring to shown in Fig. 8 B, also can be by the descending symbol of the FDD descending sub frame on the corresponding base station constantly of UPPTS symbol of TDD special subframe be destroyed, as mask this descending symbol, avoid the reception conflict of repeater by not sending downlink data.
The technical scheme that the embodiment of the invention provides, by working in coordination of TDD mode and FDD mode realized between base station and the repeater, communication between repeater and the relevant terminal, efficiently solve the winding self-interference problem in the relay system, reached relaying effect preferably.And, the technical scheme of the embodiment of the invention has made full use of the resource of existing TDD system and FDD system, need not to reserve specific system resource when in commission continuing, and also need not to set up extra trunking, farthest increase the capacity of system, reduced the cost and the consumption of system.
Further, another trunking method that below embodiment of the invention two is provided is elaborated.In the embodiment of the invention two,,, only allow repeater to receive the data that data that NB/eNB sends by first mode and described terminal send by second mode first constantly referring to Fig. 9; Second constantly, only allow repeater data to be sent to described NB/eNB and this repeater is sent to described terminal by second mode with data by first mode; Wherein, described first is the different moment with second constantly constantly, promptly limits repeater and can only receive data simultaneously or send data at synchronization.
Only demonstrate a kind of spectrum allocation may mode among Fig. 9, for example, between NB/eNB and repeater, can adopt the TDD mode, between repeater and terminal, can adopt the FDD mode.
Moment i on down direction, the repeater support receives the data of eNB transmission and the data that receiving terminal sends, and at eNB-relay downlink communication link, takies the FDD downstream spectrum; Relay-UE uplink communication link takies the sub-frame of uplink of HFDD DL;
Moment j on up direction, repeater support this repeater to send data and send data to terminal to eNB, at eNB-relay uplink communication link, take the FDD uplink spectrum; Relay-UE uplink communication link takies the descending sub frame of HFDD UL, and wherein, i is the different moment with j.
Under this mode; referring to Figure 10; between the nearby frequency bands of TDD and FDD, need not to be provided with the protection frequency band; adopted a kind of mixing Frequency Division Duplexing (FDD) (Hybrid Frequency Division Duplex; HFDD) mode; can utilize the HFDD frequency band to carry out the transmission of transmission of uplink data or downlink data, this HFDD frequency band can be TDD frequency band or FDD frequency band.
Under this mode, because repeater is transceive data simultaneously, in fact the ascending-descending subframes of the physical frame of eNB and relay is complementary in synchronization, it is the uplink frame that repeater can receive self terminal when receiving downlink frame from eNB, perhaps, when repeater sends uplink frame to eNB, can send downlink frame to terminal.Therefore, during embodiment of the invention conducting frame structural design, considered the sequence problem of the ascending-descending subframes of eNB and relay, the HARQ sequential has been provided with.
When as shown in figure 11, having shown the tdd frame structure that adopts Configure# 0 to the setting of HARQ sequential.Because when repeater receives from the subframe of synchronous/broadcasting/paging of eNB, as the 0th, 4,5, during 9 subframes, repeater can not send the subframe of the synchronous/broadcasting/paging of this repeater to terminal, as the 0th, 1,5,6 subframes, therefore need be shifted by subframe (shift), make the FDD downlink frame of eNB and the TDD downlink frame of repeater on sending direction, stagger, at least make 0 on the FDD frequency spectrum, on 5 subframes and the TDD frequency spectrum 0,5 subframes stagger on sending direction, even repeater receives from not sending corresponding downstream frame to terminal after the downlink frame of eNB.To TDD configuration# 0, can make stagger fully the 0th, 1,5,6 subframes of eNB of the 0th, 4,5,9 subframes of repeater by two subframes of shift, the TDD subframe of other configurations can not stagger fully by two subframes of shift, as the 4th, 9 subframes are staggered, then corresponding paging information can be placed on the 0th, 5 subframes.
When as shown in figure 12, having shown the tdd frame structure that adopts Configure# 2 to the setting of HARQ sequential.Can adjust HARQ sequential between HARQ sequential between repeater and the eNB and repeater and the corresponding terminal by three subframes of shift to TDD configuration#2.To the sub-frame configuration HARQ behind the shift, so that when described repeater receives descending sub frame from described base station, can on corresponding sub-frame of uplink, feed back,, can confirm from the feedback of base station down subframe by receiving simultaneously when the base station sends sub-frame of uplink.When described repeater when terminal sends descending sub frame, can on corresponding sub-frame of uplink, receive the feedback of self terminal, simultaneously when the sub-frame of uplink that receives self terminal to send, the feedback of descending sub frame that can be by sending to terminal is confirmed.
Be appreciated that can adopt above-mentioned similar methods to carry out uplink-downlink configuration to semiduplex FDD designs the HARQ sequential.HARQ configuration mode shown in Fig. 8,11,12 is a kind of exemplary setting, TDD subframe to the difference configuration, the configuration of HARQ also inequality, when adopt with existing relay system in the mode of HARQ compatibility the time, the mode that reconfigures HARQ with relay system according to the embodiment of the invention is also different.
The technical scheme that the embodiment of the invention provides, by working in coordination of TDD mode and Frequency Division Duplexing (FDD) mode realized between base station and the repeater, communication between repeater and the relevant terminal, efficiently solve the winding self-interference problem in the relay system, reached relaying effect preferably.And, the technical scheme of the embodiment of the invention has made full use of the resource of existing TDD system and frequency division duplex system, need not to reserve specific system resource when in commission continuing, also need not to set up extra trunking, farthest increase the capacity of system, reduced the cost and the consumption of system.
The embodiment of the invention three provides a kind of repeater, and described repeater comprises:
First TU Trunk Unit is used to adopt first mode and base station to communicate; Second TU Trunk Unit is used for communicating between the terminal that adopts second mode and described repeater to serve when described first TU Trunk Unit and base station adopt first mode to communicate;
Wherein, described first mode is the TDD mode, and described second mode is the Frequency Division Duplexing (FDD) mode; Perhaps, described first mode is the Frequency Division Duplexing (FDD) mode, and described second mode is the TDD mode.
Further, described repeater also comprises configuration module, is used to dispose the HARQ sequential of the subframe of the subframe of described base station and repeater, to satisfy the HARQ between the terminal that HARQ between described base station and the repeater and described repeater and this repeater served.
When all adopting duplex mode to communicate by letter to TDD mode and FDD mode, according to this concrete working method, as shown in FIG. 13A, described repeater also comprises: time-division transceiver module 131 and frequency division transceiver module 132,
Described time-division transceiver module 131, be used to make described first TU Trunk Unit to adopt time division duplex and base station to communicate, and, make described second TU Trunk Unit when described first TU Trunk Unit and base station adopt the Frequency Division Duplexing (FDD) mode to communicate, communicate between the terminal that adopts time division duplex and described repeater to serve;
Described frequency division transceiver module 132, be used to make described first TU Trunk Unit to adopt Frequency Division Duplexing (FDD) mode and base station to communicate, and, make described second TU Trunk Unit when described first TU Trunk Unit and base station adopt time division duplex to communicate, communicate between the terminal that adopts Frequency Division Duplexing (FDD) mode and described repeater to serve.
At this moment, described first TU Trunk Unit also comprises time-division baseband processing unit 133, described second TU Trunk Unit also comprises frequency division baseband processing unit 134, perhaps, described first TU Trunk Unit also comprises frequency division baseband processing unit 134, described second TU Trunk Unit also comprises time-division baseband processing unit 133, and this situation is by being shown in dotted line among Figure 13 A
Described time-division baseband processing unit 133 is used to receive the data from described time-division transceiver module, carries out being sent to described frequency division baseband processing unit after the respective handling, perhaps, reception is from the data of described frequency division baseband processing unit, carry out respective handling after, be sent to described time-division transceiver module;
Described frequency division baseband processing unit 134 is used to receive the data from described frequency division transceiver module, carries out being sent to described time-division baseband processing unit after the respective handling, perhaps, reception is from the data of described time-division baseband processing unit, carry out respective handling after, be sent to described frequency division transceiver module.
Described time-division baseband processing unit (Base Band Unit, BBU) 133 and described frequency division baseband processing unit 134 between can communicate, with guarantee corresponding data under time division way and the frequency division mode alternately.
Wherein, referring to Figure 14, first TU Trunk Unit or second TU Trunk Unit can realize by the trunking traffic module shown in Figure 14.Above-mentioned time-division transceiver module 131 can be realized by TDD switch (TDD SWITCH), time-division baseband processing unit 133 is used for the data under the time division way are handled, above-mentioned frequency division transceiver module 132 can realize that frequency division baseband processing unit 134 is used for the data under the frequency division mode are handled by duplexer (Duplexer).Wherein, also shown among Figure 14 in some required unit under the TDD mode and under the FDD mode, as D/A (D/A) modular converter, mould/number (A/D) modular converter, oscillator (Oscilator), time-division carrier frequency phase-locked loop (TDD Carrier Frequency PLL), frequency division carrier frequency phase-locked loop (FDD Carrier Frequency PLL), power amplifier (PA) and low noise amplifier (LNA) etc. have omitted some devices that those of ordinary skills can be known according to disclosed content among Figure 14,15.
In order further to reduce the hardware cost of repeater, repeater can adopt semiduplex mode to finish communicating by letter of relaying back haul link and two links of relaying access link under the situation that satisfies the trunking capacity demand, repeater is only supported the unilateral communication of relaying back haul link and relaying access link at synchronization, referring to Figure 15, repeater can use a cover R-T unit to finish communicating by letter of on two links of relaying back haul link and relaying access link TDD and FDD, at this moment, referring to Figure 13 B, described repeater also comprises mixing transceiver module 135 and mixing baseband processing unit 136
Described mixing transceiver module 135, be used to make described first TU Trunk Unit to adopt first mode and base station to communicate, and, make described second TU Trunk Unit when described first TU Trunk Unit and base station adopt first mode to communicate, communicate between the terminal that adopts second mode and described repeater to serve.
Above-mentioned mixing baseband processing unit 136 have simultaneously to the time data under the frequency-division section and the function of the data processing under the frequency division frequency range.
Different processing mode during according to relaying, described repeater also comprises the first relay and control module or the second relay and control module,
The described first relay and control module is used for only allowing described first TU Trunk Unit to receive described base station and by second mode downlink data being sent to described terminal by downlink data and described second TU Trunk Unit that first mode sends in first moment; In second moment, only allow described second TU Trunk Unit to receive described terminal and by first mode upstream data is sent to described base station by upstream data and described first TU Trunk Unit that second mode sends.At this moment, need between TDD frequency band and FDD frequency band, the protection frequency band be set, and adopt filter to eliminate the adjacent interference frequently of TDD/FDD.
At this moment, described repeater also comprises:
The first special subframe configuration module, be used for for the special subframe under the time division duplex, the descending sub frame of Frequency Division Duplexing (FDD) mode that will be corresponding with described special subframe is configured to multicast single frequency network MBSFN subframe or removes descending symbol in this descending sub frame, during with the upstream data avoiding sending according to the ascending pilot frequency subframe UPPTS symbol of described special subframe, receive the downlink data that the base station sends according to the descending symbol on the described Frequency Division Duplexing (FDD) descending sub frame when the repeater receiving terminal; Perhaps, the second special subframe configuration module, be used for for the special subframe under the time division duplex, remove the descending symbol in this descending sub frame, during with the upstream data avoiding sending according to the ascending pilot frequency subframe UPPTS symbol of described special subframe, receive the downlink data that the base station sends according to the descending symbol on the described Frequency Division Duplexing (FDD) descending sub frame when the repeater receiving terminal.
Perhaps,
Above-mentioned repeater is underway in the embodiment of the invention when continuing, can also adopt the HFDD mode, under this mode, need not between TDD frequency band and FDD frequency band, the protection frequency band to be set, only allow repeater to receive data simultaneously or send data simultaneously a moment, at this moment, can adopt the described second relay and control module, be used for first constantly, only allow described first TU Trunk Unit to receive the upstream data that downlink data that described base station sends by first mode and the described second TU Trunk Unit receiving terminal send by second mode; Second constantly, only allow described first TU Trunk Unit upstream data to be sent to described base station and described second TU Trunk Unit is sent to described terminal by second mode with downlink data by first mode, wherein, described first is the different moment with second constantly constantly.
At this moment, described repeater also comprises:
The subframe shift module, be used for the subframe under described base station or the repeater time division duplex is shifted, so that when described repeater receive from described base station synchronously/during broadcasting/paging subframe, described repeater does not send synchronous/broadcasting/paging subframe of this repeater to corresponding terminal.
Referring to Figure 15, can realize processing by BBU, by apparatus for radio frequency processing, as Duplexer to TDD data down and under the FDD, realize the mixing transceiver module, be implemented in the switching on the different carrier frequency points by single-link relaying time-division/frequency division switch (Single-Link Relay Switch TDD/FDD).
Repeater only needs one to put downlink radio frequency equipment under this mode, can guarantee simultaneously to avoid recycling TDD frequency spectrum under the adjacent condition of disturbing frequently again, therefore can utilize the eNB system configuration of original LTE just can finish the communication function of eNB-relay and two links of relay-UE.
Under this half-duplex structure, the BBU in the TU Trunk Unit has simultaneously to the TDD LTE function of TDD LTE data processing with to the FDD LTE function of FDD LTE data processing, and Duplexer handles the signal of TDDLTE and FDD LTE frequency range simultaneously.Repeater under this structure can carry out communicating by letter of TDD LTE and two kinds of systems of FDD LTE simultaneously, for example, for the relaying back haul link, repeater carries out data communication by the TDDLTE function of BBU under the TDD mode, obtain submitting to its FDD LTE function again after the data of relaying back haul link at the BBU place and handle, finish the data communication of relaying access link by FDD LTE function.
The concrete working method of each functional module and unit is referring to the inventive method embodiment among apparatus of the present invention embodiment.Each functional module and unit can be realized separately among apparatus of the present invention embodiment, also can be integrated in one or more unit and realize.
The embodiment of the invention also provides a kind of communication system, and this system comprises the terminal that base station, repeater and this repeater are served, and adopts first mode to communicate between base station and the repeater; When repeater and base station adopt first mode to communicate, adopt second mode to communicate between the terminal that described repeater and this repeater are served; Perhaps, adopt second mode to communicate between base station and the repeater; Adopt first mode to communicate between the terminal that described repeater and this repeater are served.
The technical scheme that the embodiment of the invention provides, by working in coordination of time division duplex and Frequency Division Duplexing (FDD) mode realized between base station and the repeater, communication between repeater and the relevant terminal, efficiently solve the winding self-interference problem in the relay system, realize high-quality trunking traffic, satisfied user's needs.And, the technical scheme of the embodiment of the invention has made full use of the resource of existing tdd systems and frequency division duplex system, need not to reserve specific system resource when in commission continuing, also need not to set up extra trunking, farthest increase the capacity of system, reduced the cost and the consumption of system.
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.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can software product form embody, this computer software product can be stored in the storage medium, as ROM/RAM, magnetic disc, CD etc., 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 some part of each embodiment of the present invention or embodiment.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (16)
1. a trunking method is characterized in that, described method comprises:
Improved repeater adopts first mode and base station to communicate;
When between described improved repeater and described base station, adopting first mode to communicate, adopt second mode to communicate between the terminal that described improved repeater and this improved repeater are served;
Wherein, described first mode is a time division duplex, and described second mode is the Frequency Division Duplexing (FDD) mode;
Perhaps, described first mode is the Frequency Division Duplexing (FDD) mode, and described second mode is a time division duplex.
2. trunking method according to claim 1 is characterized in that, described method comprises:
Outside band, in the frequency division duplex system of relaying, when adopting time division duplex to communicate between described base station and the improved repeater, adopt the Frequency Division Duplexing (FDD) mode to communicate between the terminal that described improved repeater and this improved repeater are served; Perhaps,
Outside band, in the tdd systems of relaying, when adopting the Frequency Division Duplexing (FDD) mode to communicate between described base station and the improved repeater, adopt time division duplex to communicate between the terminal that described improved repeater and this improved repeater are served; Perhaps,
In band, in the frequency division duplex system of relaying, when adopting the Frequency Division Duplexing (FDD) mode to communicate between described base station and the improved repeater, adopt time division duplex to communicate between the terminal that described improved repeater and this improved repeater are served; Perhaps,
In band, in the tdd systems of relaying, when adopting time division duplex to communicate between described base station and the improved repeater, adopt the Frequency Division Duplexing (FDD) mode to communicate between the terminal that described improved repeater and this improved repeater are served.
3. trunking method according to claim 1 is characterized in that, described method comprises:
In first moment, only allow improved repeater to receive described base station and by second mode downlink data is sent to described terminal by downlink data and this improved repeater that first mode sends;
In second moment, only allow improved repeater to receive described terminal and by first mode upstream data is sent to described base station by upstream data and this improved repeater that second mode sends;
Wherein, described first is the different moment with second constantly constantly, described improved repeater carries out carrier frequency and switches when second moment, send data so that be engraved on the time division duplex frequency range during improved repeater the first, be engraved in second o'clock and send data on the Frequency Division Duplexing (FDD), be engraved on the Frequency Division Duplexing (FDD) frequency range during perhaps improved repeater the first and send data, be engraved in second o'clock and send data on the time division duplex, and be engraved on the time division duplex frequency range during improved repeater the first and receive data, be engraved in second o'clock and receive data on the Frequency Division Duplexing (FDD), perhaps, be engraved on the Frequency Division Duplexing (FDD) frequency range during improved repeater the first and receive data, be engraved in second o'clock and receive data on the time division duplex.
4. trunking method according to claim 3 is characterized in that, described method also comprises:
For the special subframe under the time division duplex, the descending sub frame of Frequency Division Duplexing (FDD) mode that will be corresponding with described special subframe is configured to multicast single frequency network MBSFN subframe or removes descending symbol in this descending sub frame, during with the upstream data avoiding sending according to the ascending pilot frequency subframe UPPTS symbol of described special subframe, receive the downlink data that the base station sends according to the descending symbol on the described Frequency Division Duplexing (FDD) descending sub frame when improved repeater receiving terminal.
5. trunking method according to claim 1 is characterized in that, described method comprises:
First constantly, only allow improved repeater to receive the upstream data that downlink data that described base station sends by first mode and described terminal send by second mode;
Second constantly, only allow improved repeater upstream data to be sent to described base station and this improved repeater is sent to described terminal by second mode with downlink data by first mode;
Wherein, described first is the different moment with second constantly constantly.
6. trunking method according to claim 5 is characterized in that, described method comprises:
Subframe under described base station or the improved repeater time division duplex is shifted, so that when described improved repeater receive from described base station synchronously/during broadcasting/paging subframe, described improved repeater does not send synchronous/broadcasting/paging subframe of this improved repeater to corresponding terminal.
7. want 1 to 6 each described method according to right, it is characterized in that described method also comprises:
Dispose the HARQ sequential of the subframe of the subframe of described base station and improved repeater, so that satisfy the HARQ between the terminal that HARQ between described base station and the improved repeater and described improved repeater and this improved repeater serve.
8. a repeater is characterized in that, described repeater comprises:
First TU Trunk Unit is used to adopt first mode and base station to communicate;
Second TU Trunk Unit is used for communicating between the terminal that adopts second mode and described repeater to serve when described first TU Trunk Unit and base station adopt first mode to communicate;
Wherein, described first mode is a time division duplex, and described second mode is the Frequency Division Duplexing (FDD) mode; Perhaps, described first mode is the Frequency Division Duplexing (FDD) mode, and described second mode is a time division duplex.
9. repeater according to claim 8 is characterized in that, described repeater also comprises time-division transceiver module and frequency division transceiver module,
Described time-division transceiver module, be used to make described first TU Trunk Unit to adopt time division duplex and base station to communicate, and, make described second TU Trunk Unit when described first TU Trunk Unit and base station adopt the Frequency Division Duplexing (FDD) mode to communicate, communicate between the terminal that adopts time division duplex and described repeater to serve;
Described frequency division transceiver module, be used to make described first TU Trunk Unit to adopt Frequency Division Duplexing (FDD) mode and base station to communicate, and, make described second TU Trunk Unit when described first TU Trunk Unit and base station adopt time division duplex to communicate, communicate between the terminal that adopts Frequency Division Duplexing (FDD) mode and described repeater to serve.
10. repeater according to claim 9, it is characterized in that, described first TU Trunk Unit also comprises the time-division baseband processing unit, described second TU Trunk Unit also comprises the frequency division baseband processing unit, perhaps, described first TU Trunk Unit also comprises the frequency division baseband processing unit, and described second TU Trunk Unit also comprises the time-division baseband processing unit
Described time-division baseband processing unit is used to receive the data from described time-division transceiver module, carries out being sent to described frequency division baseband processing unit after the respective handling, perhaps, reception is from the data of described frequency division baseband processing unit, carry out respective handling after, be sent to described time-division transceiver module;
Described frequency division baseband processing unit is used to receive the data from described frequency division transceiver module, carries out being sent to described time-division baseband processing unit after the respective handling, perhaps, reception is from the data of described time-division baseband processing unit, carry out respective handling after, be sent to described frequency division transceiver module.
11. repeater according to claim 8 is characterized in that, described repeater also comprises the mixing transceiver module,
Described mixing transceiver module, be used to make described first TU Trunk Unit to adopt first mode and base station to communicate, and, make described second TU Trunk Unit when described first TU Trunk Unit and base station adopt first mode to communicate, communicate between the terminal that adopts second mode and described repeater to serve.
12. repeater according to claim 11 is characterized in that, described repeater also comprises the first relay and control module or the second relay and control module,
The described first relay and control module is used for only allowing described first TU Trunk Unit to receive described base station and by second mode downlink data being sent to described terminal by downlink data and described second TU Trunk Unit that first mode sends in first moment; In second moment, only allow described second TU Trunk Unit to receive described terminal and by first mode upstream data is sent to described base station by upstream data and described first TU Trunk Unit that second mode sends;
The described second relay and control module is used for first constantly, only allows described first TU Trunk Unit to receive the upstream data that downlink data that described base station sends by first mode and the described second TU Trunk Unit receiving terminal send by second mode; Second constantly, only allow described first TU Trunk Unit upstream data to be sent to described base station and described second TU Trunk Unit is sent to described terminal by second mode with downlink data by first mode;
Wherein, described first is the different moment with second constantly constantly.
13. repeater according to claim 12 is characterized in that, when adopting the described first relay and control module, described repeater also comprises:
The first special subframe configuration module, be used for for the special subframe under the time division duplex, the descending sub frame of Frequency Division Duplexing (FDD) mode that will be corresponding with described special subframe is configured to multicast single frequency network MBSFN subframe or removes descending symbol in this descending sub frame, during with the upstream data avoiding sending according to the ascending pilot frequency subframe UPPTS symbol of described special subframe, receive the downlink data that the base station sends according to the descending symbol on the described Frequency Division Duplexing (FDD) descending sub frame when the repeater receiving terminal; Perhaps,
The second special subframe configuration module, be used for for the special subframe under the time division duplex, remove the descending symbol in this descending sub frame, during with the upstream data avoiding sending according to the ascending pilot frequency subframe UPPTS symbol of described special subframe, receive the downlink data that the base station sends according to the descending symbol on the described Frequency Division Duplexing (FDD) descending sub frame when the repeater receiving terminal.
14. repeater according to claim 12 is characterized in that, when adopting the described second relay and control module, described repeater also comprises:
The subframe shift module, be used for the subframe under described base station or the repeater time division duplex is shifted, so that when described repeater receive from described base station synchronously/during broadcasting/paging subframe, described repeater does not send synchronous/broadcasting/paging subframe of this repeater to corresponding terminal.
15. to 14 each described repeaters, it is characterized in that described repeater also comprises configuration module according to Claim 8,
Described configuration module is used to dispose the HARQ sequential of the subframe of the subframe of described base station and repeater, to satisfy the HARQ between the terminal that HARQ between described base station and the repeater and described repeater and this repeater served.
16. a communication system is characterized in that described system comprises the terminal that base station, repeater and this repeater are served,
When adopting first mode to communicate between described repeater and the described base station, adopt second mode to communicate between described repeater and the described terminal;
Wherein, described first mode is a time division duplex, and described second mode is the Frequency Division Duplexing (FDD) mode; Perhaps, described first mode is the Frequency Division Duplexing (FDD) mode, and described second mode is a time division duplex.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101805327A CN102045779A (en) | 2009-10-19 | 2009-10-19 | Relay method, equipment and system |
| PCT/CN2010/077866 WO2011047616A1 (en) | 2009-10-19 | 2010-10-19 | Relay method, apparatus and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101805327A CN102045779A (en) | 2009-10-19 | 2009-10-19 | Relay method, equipment and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102045779A true CN102045779A (en) | 2011-05-04 |
Family
ID=43899832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101805327A Pending CN102045779A (en) | 2009-10-19 | 2009-10-19 | Relay method, equipment and system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102045779A (en) |
| WO (1) | WO2011047616A1 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014079287A1 (en) * | 2012-11-20 | 2014-05-30 | 华为技术有限公司 | Self-interference elimination technology-based communication method, base station and communication system |
| CN104244337A (en) * | 2014-09-02 | 2014-12-24 | 余凤莲 | Optimized transmission system for LTE dual-mode relay network |
| CN106131923A (en) * | 2016-06-30 | 2016-11-16 | 厦门纵行信息科技有限公司 | A kind of network-building method mixing access module multihop network and Wireless Telecom Equipment |
| CN107113837A (en) * | 2014-12-23 | 2017-08-29 | 索尼公司 | Method, infrastructure element, base station and NE |
| CN107634792A (en) * | 2017-09-04 | 2018-01-26 | 上海华为技术有限公司 | A kind of method, equipment and network equipment for accessing passback co-sited AF panel |
| WO2018219096A1 (en) * | 2017-06-02 | 2018-12-06 | 维沃移动通信有限公司 | Transmission method, related equipment and system for terminal self-interference |
| CN113890584A (en) * | 2021-08-25 | 2022-01-04 | 力同科技股份有限公司 | Talkback relay system and its radio frequency receiving and transmitting control method and device |
| CN114303326A (en) * | 2019-09-05 | 2022-04-08 | 高通股份有限公司 | Repeater with configurable operating mode |
| US11824620B2 (en) | 2019-09-05 | 2023-11-21 | Qualcomm Incorporated | Remote unit with a configurable mode of operation |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021029129A1 (en) * | 2019-08-15 | 2021-02-18 | 株式会社Ｎｔｔドコモ | Wireless communication system, ground base station, aerial base station, and wireless communication method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4529375B2 (en) * | 2003-04-28 | 2010-08-25 | パナソニック電工株式会社 | Wireless relay device |
| CN101119153B (en) * | 2006-08-03 | 2010-12-08 | 中兴通讯股份有限公司 | Method for selecting wireless digital relay system and transmission time spacing |
| CN101137204B (en) * | 2006-08-30 | 2011-04-27 | 华为技术有限公司 | Mobile communication system and mobile communication method |
| CN101527916A (en) * | 2008-03-05 | 2009-09-09 | 中兴通讯股份有限公司 | Method for multiplexing control channel of relay station in orthogonal frequency division multiplexing system |
-
2009
- 2009-10-19 CN CN2009101805327A patent/CN102045779A/en active Pending
-
2010
- 2010-10-19 WO PCT/CN2010/077866 patent/WO2011047616A1/en active Application Filing
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014079287A1 (en) * | 2012-11-20 | 2014-05-30 | 华为技术有限公司 | Self-interference elimination technology-based communication method, base station and communication system |
| CN103841631A (en) * | 2012-11-20 | 2014-06-04 | 华为技术有限公司 | Communication method based on self-interference elimination technology, base station and communication system |
| CN103841631B (en) * | 2012-11-20 | 2017-06-27 | 华为技术有限公司 | A kind of communication means based on self-interference technology for eliminating, base station and communication system |
| CN104244337A (en) * | 2014-09-02 | 2014-12-24 | 余凤莲 | Optimized transmission system for LTE dual-mode relay network |
| CN107113837B (en) * | 2014-12-23 | 2022-02-22 | 索尼公司 | Method for reducing interference, infrastructure unit, base station and network unit |
| CN107113837A (en) * | 2014-12-23 | 2017-08-29 | 索尼公司 | Method, infrastructure element, base station and NE |
| CN106131923B (en) * | 2016-06-30 | 2020-03-27 | 厦门纵行信息科技有限公司 | Networking method of multi-hop network in hybrid access mode and wireless communication equipment |
| CN106131923A (en) * | 2016-06-30 | 2016-11-16 | 厦门纵行信息科技有限公司 | A kind of network-building method mixing access module multihop network and Wireless Telecom Equipment |
| WO2018219096A1 (en) * | 2017-06-02 | 2018-12-06 | 维沃移动通信有限公司 | Transmission method, related equipment and system for terminal self-interference |
| US11223464B2 (en) | 2017-06-02 | 2022-01-11 | Vivo Mobile Communication Co., Ltd. | Transmission method, related equipment and system for terminal self-interference |
| US11689340B2 (en) | 2017-06-02 | 2023-06-27 | Vivo Mobile Communication Co., Ltd. | Transmission method, related equipment and system for terminal self-interference |
| CN107634792A (en) * | 2017-09-04 | 2018-01-26 | 上海华为技术有限公司 | A kind of method, equipment and network equipment for accessing passback co-sited AF panel |
| CN114303326A (en) * | 2019-09-05 | 2022-04-08 | 高通股份有限公司 | Repeater with configurable operating mode |
| US11824620B2 (en) | 2019-09-05 | 2023-11-21 | Qualcomm Incorporated | Remote unit with a configurable mode of operation |
| CN114303326B (en) * | 2019-09-05 | 2024-04-12 | 高通股份有限公司 | Repeater with configurable modes of operation |
| CN113890584A (en) * | 2021-08-25 | 2022-01-04 | 力同科技股份有限公司 | Talkback relay system and its radio frequency receiving and transmitting control method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011047616A1 (en) | 2011-04-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102045779A (en) | Relay method, equipment and system | |
| US9831990B2 (en) | Communication system, method, base station, and communication device | |
| CN101072065B (en) | Apparatus and method for transparent relaying in multi-hop relay cellular network | |
| CN102113398B (en) | Resource allocation method for backhaul link and access link in wireless communication system including relay | |
| EP2521390B1 (en) | Method for carrier aggregation and method for dynamic spectrum allocation | |
| EP1777877B1 (en) | Apparatus and method for supporting multiple links in a network using frequency bands | |
| EP1931155B1 (en) | Wireless relay communication system and method | |
| CN103814532B (en) | In mixed zone/with outer relaying | |
| CN112075115A (en) | Method for format of backhaul and access link slot in wireless communication system and terminal using the same | |
| EP1890402A2 (en) | Apparatus and method for providing relay service in multi-hop relay broadband wireless access communication system | |
| CN108353286A (en) | The system and method for configuring carrier wave using the candidate parameter config set of overlapping | |
| CN101873630B (en) | Wireless communication method, system and device thereof | |
| EP3497861B1 (en) | Latency reduction in tdd systems with carrier aggragation | |
| CN101123789B (en) | Method and system for wireless resource control and allocation | |
| KR20070031173A (en) | Apparatus and method for supportting multi link in multi-hop relay cellular network | |
| EP3444987A1 (en) | Punctured/on-demand control information for flexible/full duplex communication | |
| WO2012165067A1 (en) | Wireless resource allocation method, wireless resource allocation device, and communication system | |
| CN102474815A (en) | Communication system, communication apparatus, communication method and computer program product | |
| CN1941665B (en) | Method for realizing radio transit based on transfer station | |
| EP3535921B1 (en) | Techniques for processing multiple division duplexing schemes within a transmission time interval | |
| KR20070108426A (en) | Apparatus and method for supporting relay service in multi-hop relay broadband wireless access communication system | |
| CN101814944B (en) | Data transmission method, system and device | |
| WO2011098844A1 (en) | Effective ways to use a special subframe for a time division duplex relay backhaul | |
| CN101784125A (en) | Data transmission method and system in TDD mode | |
| IL194097A (en) | Ofdma-based operation of a wireless subscriber terminal in a plurality of cells |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110504 |