CN102801461B - Downlink return sub-frame structure configuration method and system - Google Patents
Downlink return sub-frame structure configuration method and system Download PDFInfo
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Abstract
The invention discloses a kind of downlink return sub-frame structure configuration method and system, the method includes: according to the distance between descending propagation delay or base station and the relay station of base station to relay station, on second slot of backhaul subframe descending to relay station, the terminal symbol of backhaul transport and/or the definition status of relay station configure；Relay station is according to terminal symbol and/or definition status, configurating downlink return sub-frame structure.The present invention can avoid relay station downlink reception end and transmitting terminal generation self-interference, and then can ensure that systematic function and user's impression.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of downlink return sub-frame structure configuration method and system.
Background technology
Relaying technique, as a kind of emerging technology, causes and notes the most widely, is considered the key technology of B3G/4G.
Owing to future wireless system or cellular system require to increase coverage, supporting higher rate transmission, wireless communication technology is carried by this
Go out new challenge.Meanwhile, the cost issues of system building and maintenance is more prominent.Along with transfer rate and the increasing of communication distance
Adding, the energy consumption issues of battery also becomes prominent, and the radio communication in future will use higher frequency, the path thereby resulted in
Loss decay is more serious.By relaying technique, traditional one hop link can be divided into multiple multi-hop link, due to distance contracting
Short, this will greatly reduce path loss, be favorably improved transmission quality, expand communication range, thus provide the user faster
Speed better service.
Fig. 1 is the schematic diagram of the junction network structure according to correlation technique, as it is shown in figure 1, in junction network, relay station is joined
And the link between the user of service and relay station is referred to as access link (Access Link), and the link between relay station and base station is claimed
For back haul link (Backhaul Link), the link that base station participates between user and the base station of service is referred to as the link (Direct that direct transfers
Link)。
Fig. 2 is the schematic diagram of the subframe structure according to correlation technique, as in figure 2 it is shown, at Long Term Evolution (Long Term
Evolution, referred to as LTE) and follow-up evolution communication systems in, the standard time of 1 descending sub frame or sub-frame of uplink is long
Degree is Tsubframe=30720TS=1ms, each subframe comprises 2 slot, the time span of each slot
Tslot=15360 Ts=0.5ms.If using general cyclic prefix (Normal cyclic prefix, wherein cyclic in subframe
Prefix is called for short CP), then 1 descending or up slot comprises 7 OFDM (Orthogonal Frequency
Division Multiplexing, referred to as OFDM) symbol or Single Carrier-Frequency Division multiple access (Single Carrier-Frequency
Division Multiple Access, referred to as SC-FDMA) symbol, i.e. from symbol 0 up-to symbol 6.
By including CP length computation, a length of 2208T of symbol 0s, a length of 2192T of other symbolss；If in subframe
Use extension CP (Extended cyclic prefix), then 1 slot comprises 6 symbols, by including CP length computation, often
The a length of 2560T of individual symbols.Wherein, Ts represents the length of a time quantum, Ts=1/30720 millisecond.The present invention retouches
In stating, OFDM symbol or SC-FDMA symbol, symbol can be referred to as, in subframe, symbol logo is from the beginning of 0.
If following discussion is without explanation, all it is assumed to be common CP configuration.
For relaying (In-band relaying) in band, back haul link and access link are operated on identical frequency spectrum.Ordinary circumstance
Under, in order to avoid between receiving terminal and the transmitting terminal of relay station self produce interference, for band in relaying, it is stipulated that back haul link and
Descending or up transmission can not be carried out on access link simultaneously, and must stagger in time.Therefore, in being used at present
The subframe of station transmission of continuing is divided into backhaul subframe and accesses subframe, the back haul link downlink and uplink transmission of relay station respectively descending and
Carrying out in up backhaul subframe, downlink and uplink accesses subframe and is respectively used to the transmission of access link downlink and uplink the most specially.And
And, for descending backhaul subframe, relay station needs to carry out the descending of access link in 1 or 2 OFDM symbol before this subframe
Launch, i.e. carry out downlink by descending access link to user, and carry out under back haul link in remaining available resource
Row receives, and i.e. receives the downlink transfer from base station by descending back haul link.
Further, relay station stepchild's frame in downstream is carried out between downlink and downlink reception, in addition it is also necessary to certain time length
Protection interval is changed for radio frequency, and this downlink is difficult to downlink reception or downlink reception to the transformation process of downlink
Completing in CP, simultaneously in order to ensure the compatibility to LTE user, protection is disposed on descending backhaul subframe by current regulation
In, sacrifice a part of time interval resource in descending backhaul subframe to avoid the occurrence of relay station self downlink end and receiving terminal it
Between produce interference.
At present, downlink return sub-frame structure configuration specifically includes two slot structure configurations in subframe, i.e. descending time in slot
The beginning and end configuration of journey transmission.But as it has been described above, protection interval occupies a part of time slot money in descending backhaul subframe
Source, therefore, the structure configuration of descending backhaul subframe will be limited accordingly.And for different relay station definition statuses,
Described restriction is also different.Regulation at present, relay station has two kinds of definition statuses, respectively synchronous regime and asynchronous regime.
If the timing that the timing of relay station access link downlink transfer is transmitted with base station down is alignd, then this relay station is claimed to be in synchronization shape
State, is otherwise in asynchronous regime.Concrete, for the relay station of synchronous regime, downlink return sub-frame structure configuration includes:
In first slot, the starting point of descending backhaul transport is configured to symbol 1 or 2 or 3, and terminal is configured to symbol 6,
In two slot, the starting point of descending backhaul transport is configured to symbol 0, and terminal is configured to symbol 5；Relaying for asynchronous regime
Standing, the configuration of the structure of descending backhaul subframe includes: in first slot, the starting point of descending backhaul transport be configured to symbol 2 or
Person 3, and terminal is configured to symbol 6, and in second slot, the starting point of descending backhaul transport is configured to symbol 0, and terminal is configured to
Symbol 6.As shown in table 1, table 2, wherein, the descending backhaul transport starting point of first slot is considered this descending backhaul subframe and enters
The starting point of row downlink transfer, is configured to relay station by high-level signaling by base station；Structure configuration and the relaying of second slot
Synchronization or asynchronous regime residing for standing are the most corresponding, i.e. to using the configuration 1 in table 2 with the relay station of synchronous regime, asynchronous
The relay station of state uses the configuration 0 in table 2, and is not configured to relay station by high-level signaling by base station.
First slot structure configuration in the descending backhaul subframe of table 1
| Configuration | Play point symbol | Terminal symbol |
| 0 | 1 | 6 |
| 1 | 2 | 6 |
| 2 | 3 | 6 |
Second slot structure configuration in the descending backhaul subframe of table 2
| Configuration | Play point symbol | Terminal symbol |
| 0 | 0 | 6 |
| 1 | 0 | 5 |
Fig. 3 is the schematic diagram of the asynchronous regime downlink return sub-frame structure according to correlation technique, as it is shown on figure 3, for non-same
Step state relay station, in first slot of descending backhaul subframe, the starting point of descending backhaul transport is configured to symbol 2 or 3, eventually
Point is configured to symbol 6, and in second slot, the starting point of descending backhaul transport is configured to symbol 0, and terminal is configured to symbol 6.
Fig. 4 is the schematic diagram of the synchronous regime downlink return sub-frame structure according to correlation technique, for the relay station of synchronous regime,
The concrete symbol that can be used for carrying out descending backhaul transport in its descending backhaul subframe also can be along with the propagation delay between base station and relay station
Change and different, the propagation delay when between base station and relay station exceedes a certain threshold TP_THTime, in descending backhaul subframe second
The available symbols of slot is that symbol 0 arrives symbol 4, and symbol 5 is by unavailable.
In correlation technique, the relay station of synchronous regime terminal symbol of backhaul transport on second slot of descending backhaul subframe is the most solid
Surely symbol 5 it is configured to, but, when base station and repeater span are from farther out time, or when relay station is moved, this synchronization shape
The relay station of state is likely to produce the most serious self-interference between downlink reception end and transmitting terminal, causes loading error occurring, to being
It is the biggest that system performance and user experience impact.
Summary of the invention
It is symbol for the terminal symbol fixed configurations of backhaul transport on second slot of the descending backhaul subframe of relay station in correlation technique
Numbers 5, so when base station and repeater span are in time farther out or being moved at relay station, this relay station can at downlink reception end and
Produce the problem of the most serious self-interference between transmitting terminal and propose the present invention, to this end, present invention is primarily targeted at offer
A kind of downlink return sub-frame structure configuration method and system, to solve the problems referred to above.
To achieve these goals, according to an aspect of the invention, it is provided a kind of downlink return sub-frame structure configuration method.
Downlink return sub-frame structure configuration method according to the present invention includes: according to the descending propagation delay of base station to relay station or
Distance between base station and relay station, on second slot of backhaul subframe descending to relay station backhaul transport terminal symbol and/or in
The definition status at station of continuing configures；Relay station is according to terminal symbol and/or definition status, configurating downlink return sub-frame structure.
Preferably, in the case of the descending propagation delay in base station to relay station is less than or is less than the first thresholding set in advance,
On second slot of backhaul subframe descending to relay station, the terminal symbol of backhaul transport and/or the definition status of relay station carry out configuration bag
Include one below: configuration terminal symbol is symbol 5 and/or configuration definition status is synchronous regime；Configuration terminal symbol is symbol 6
And/or configuration definition status is asynchronous regime.
Preferably, in the case of the descending propagation delay in base station to relay station exceedes or is not less than the second thresholding set in advance,
On second slot of backhaul subframe descending to relay station, the terminal symbol of backhaul transport and/or the definition status of relay station carry out configuration bag
Include one below: configuration terminal symbol is symbol 4 and/or configuration definition status is synchronous regime；Configuration terminal symbol is symbol 6
And/or configuration definition status is asynchronous regime.
Preferably, in the case of distance between the base station and the relay station is less than or is less than the 3rd thresholding set in advance, centering
The terminal symbol of backhaul transport and/or the definition status of relay station on second slot of descending backhaul subframe of station of continuing carry out configuration include with
One of lower: configuration terminal symbol is symbol 5 and/or configuration definition status is synchronous regime；Configuration terminal symbol be symbol 6 and/
Or configuration definition status is asynchronous regime.
Preferably, in the case of distance between the base station and the relay station exceedes or is not less than the 4th thresholding set in advance, centering
The terminal symbol of backhaul transport and/or the definition status of relay station on second slot of descending backhaul subframe of station of continuing carry out configuration include with
One of lower: configuration terminal symbol is symbol 4 and/or configuration definition status is synchronous regime；Configuration terminal symbol be symbol 6 and/
Or configuration definition status is asynchronous regime.
Preferably, the terminal symbol of backhaul transport and/or the timing shape of relay station on second slot of backhaul subframe descending to relay station
State carries out configuration and includes: relay station is to the terminal symbol of backhaul transport on self second slot of descending backhaul subframe and/or timing
State configures.
Preferably, the terminal symbol of backhaul transport and/or the timing shape of relay station on second slot of backhaul subframe descending to relay station
State carries out configuration and includes: the terminal symbol of backhaul transport and/or relay station on second slot of base station backhaul subframe descending to relay station
Definition status configure；Configuration result is informed relay station by high-level signaling and/or X2 interface signaling by base station.
Preferably, the terminal symbol of backhaul transport and/or the timing shape of relay station on second slot of backhaul subframe descending to relay station
State carries out configuration and includes: on second slot of OAM module backhaul subframe descending to relay station backhaul transport terminal symbol and/or in
The definition status at station of continuing configures；Configuration result is informed relay station by OAM signaling by OAM module.
Preferably, configuration result is informed that relay station includes by OAM signaling by OAM module: OAM module is believed by OAM
Order is by configuration result signals base；Relay station is informed by high-level signaling and/or X2 interface signaling and/or direct pass-through mode in base station.
Preferably, after relay station receives configuration result, said method also includes: relay station passes through high-level signaling and/or X2
Interface signaling and/or directly forwarding are by configuration result signals base.
Preferably, high-level signaling and/or X2 interface signaling and/or OAM signaling include the first binary sequence, wherein the 1st
System sequence is configured to symbol 4, symbol 5 or symbol 6 for directing terminal symbol.
Preferably, high-level signaling and/or X2 interface signaling and/or OAM signaling include the second binary sequence, wherein the 2nd 2
System sequence is configured to synchronous regime or asynchronous regime for indicating timing status.
To achieve these goals, according to another aspect of the present invention, it is provided that a kind of downlink return sub-frame structure configuration system.
Downlink return sub-frame structure configuration system according to the present invention includes downlink return sub-frame structure configuration device and relay station, its
Middle downlink return sub-frame structure configuration device includes: the first configuration module, for the descending propagation delay according to base station to relay station
Or the distance between base station and relay station, on second slot of backhaul subframe descending to relay station the terminal symbol of backhaul transport and/
Or the definition status of relay station configures；Second configuration module, for according to terminal symbol and/or definition status, configurating downlink
Return sub-frame structure.
Preferably, in the second configuration module is in base station or to be in OAM module interior or be in relay station.
The present invention passes through flexible configuration this terminal symbol and/or synchronous regime, and then configurating downlink return sub-frame structure, can avoid
Relay station downlink reception end and transmitting terminal generation self-interference, and then can ensure that systematic function and user's impression.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, and the present invention shows
Meaning property embodiment and explanation thereof are used for explaining the present invention, are not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of the junction network structure according to correlation technique；
Fig. 2 is the schematic diagram of the subframe structure according to correlation technique；
Fig. 3 is the schematic diagram of the asynchronous regime downlink return sub-frame structure according to correlation technique；
Fig. 4 is the schematic diagram of the synchronous regime downlink return sub-frame structure according to correlation technique；
Fig. 5 is the flow chart of downlink return sub-frame structure configuration method according to embodiments of the present invention；
Fig. 6 is the interaction diagrams of the downlink return sub-frame structure configuration method according to the preferred embodiment of the present invention one；
Fig. 7 is the interaction diagrams of the downlink return sub-frame structure configuration method according to the preferred embodiment of the present invention five；
Fig. 8 is the interaction diagrams of the downlink return sub-frame structure configuration method according to the preferred embodiment of the present invention seven；
Fig. 9 is the interaction diagrams of the downlink return sub-frame structure configuration method according to the preferred embodiment of the present invention eight；
Figure 10 is the interaction diagrams of the downlink return sub-frame structure configuration method according to the preferred embodiment of the present invention ten；
Figure 11 is the structured flowchart of downlink return sub-frame structure configuration system according to embodiments of the present invention.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.
Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Embodiments provide a kind of downlink return sub-frame structure configuration method.Fig. 5 is according to embodiments of the present invention descending
The flow chart of return sub-frame structure configuration method, as it is shown in figure 5, include that steps S502 is to step S504.
Step S502, according to the distance between descending propagation delay or base station and the relay station of base station to relay station, to relay station
On second slot of descending backhaul subframe, the terminal symbol of backhaul transport and/or the definition status of relay station configure.
Step S504, relay station is according to terminal symbol and/or definition status, configurating downlink return sub-frame structure.
In correlation technique, on second slot of the descending backhaul subframe of relay station, the terminal symbol fixed configurations of backhaul transport is symbol
5, so when base station and repeater span are in time farther out or being moved at relay station, this relay station can be at downlink reception end with send out
Penetrate and between end, produce the most serious self-interference.In the embodiment of the present invention, by flexible configuration this terminal symbol and/or synchronous regime,
And then configurating downlink return sub-frame structure, relay station downlink reception end and transmitting terminal generation self-interference can be avoided, and then can protect
Card systematic function and user's impression.
Furthermore, it is contemplated that the main cause that self-interference produces is base station with repeater span from farther out or relay station is moved,
Therefore the present invention according between descending propagation delay or base station and the relay station of base station to relay station distance configure terminal symbol and/
Or definition status, such that it is able to the problem directly solving self-interference.Concrete, when propagating according to base station to relay station descending
Prolong or between base station and relay station distance configuration terminal symbol and/or definition status there are following four kinds of situations.
Situation one, is less than or less than thresholding T set in advance to the descending propagation delay of relay station in base stationP_TH1Time, Ke Yitong
Cross following two kind method configuration terminal symbol and/or definition status:
Method one, configuration terminal symbol be symbol 5 and/or configuration definition status be synchronous regime；
Method two, configuration terminal symbol be symbol 6 and/or configuration definition status be asynchronous regime.
Situation two, exceedes to the descending propagation delay of relay station in base station or is not less than thresholding T set in advanceP_TH2Time, permissible
By two kinds of following method configuration terminal symbols and/or definition status:
Method one, configuration terminal symbol be symbol 4 and/or configuration definition status be synchronous regime；
Method two, configuration terminal symbol be symbol 6 and/or configuration definition status be asynchronous regime.
This preferred embodiment can also configure TP_TH1≤TP_TH2。
Situation three, distance between the base station and the relay station is less than or less than thresholding D set in advanceTH1Time, can be by such as
Under two kinds of methods configuration terminal symbols and/or definition status:
Method one, configuration terminal symbol be symbol 5 and/or configuration definition status be synchronous regime；
Method two, configuration terminal symbol be symbol 6 and/or configuration definition status be asynchronous regime.
Situation four, distance between the base station and the relay station exceedes or is not less than thresholding D set in advanceTH2Time, can be by such as
Under two kinds of methods configuration terminal symbols and/or definition status:
Method one, configuration terminal symbol be symbol 4 and/or configuration definition status be synchronous regime；
Method two, configuration terminal symbol be symbol 6 and/or configuration definition status be asynchronous regime.
This preferred embodiment can also configure DTH1≤DTH2。
It addition, terminal symbol and/or definition status are carried out configuration can pass through relay station self, base station or OAM module three
The mode of kind is carried out, and is described separately below.
Mode one: relay station is to the terminal symbol of backhaul transport on self second slot of descending backhaul subframe and/or definition status
Configure.
Mode two: the terminal symbol of backhaul transport and/or determining of relay station on second slot of base station backhaul subframe descending to relay station
Time state configure；Configuration result is informed relay station by high-level signaling and/or X2 interface signaling by base station.
The terminal symbol of backhaul transport and/or relay station on second slot of mode three: OAM module backhaul subframe descending to relay station
Definition status configure；Configuration result is informed relay station by OAM signaling by OAM module.
In the manner three, configuration result indirectly can also be informed relay station by OAM signaling by OAM module, i.e. OAM mould
Block passes through OAM signaling by configuration result signals base；Base station by high-level signaling and/or X2 interface signaling and/or directly forwards
Mode informs relay station.
It addition, the configuration result that non-base station is configured, it is also possible to by configuration result signals base, they can be by following two
The method of kind is informed:
Method one, relay station by high-level signaling and/or X2 interface signaling and/or directly forwards configuration result signals base；
Method two, configuration result is informed relay station by OAM signaling by OAM module.
Preferably, high-level signaling and/or X2 interface signaling and/or OAM signaling include for directing terminal symbol be configured to symbol 4,
Symbol 5 or the binary sequence of symbol 6.
1., when the bit number of binary sequence is 1, when can configure binary sequence for " 1 ", represent that terminal symbol is configured to
5, for " 0 ", configuration binary sequence represents that terminal symbol is configured to 6, as shown in table 3.It should be noted that this mapping is closed
Preferred embodiment, the mapping relations of other any employing inventive concept all should include the guarantor of the present invention in system's only one
Protect scope.
2., when the bit number of binary sequence is 2, when can configure binary sequence for " 00 ", represent that terminal symbol configures
Be 4, for " 01 ", configuration binary sequence represents that terminal symbol is configured to 5, and configuration binary sequence is that " 11 " represent terminal symbol
Number it is configured to 6, as shown in table 4.It should be noted that these mapping relations be only one preferred embodiment, other is any
The mapping relations using inventive concept all should include protection scope of the present invention in.
Preferably, high-level signaling and/or X2 interface signaling and/or OAM signaling include being configured to synchronize for indicating timing status
State or the binary sequence of asynchronous regime.Specifically, represent that definition status is joined when can configure binary sequence for " 0 "
Be set to synchronous regime, for " 0 ", configuration binary sequence represents that definition status is configured to asynchronous regime.It should be noted that this
Mapping relations be only one preferred embodiment, the mapping relations of other any employing inventive concept all should include this in
Bright protection domain.
Second slot structure configuration (1) in the descending backhaul subframe of table 3
| Configuration | Play point symbol | Terminal symbol |
| 0 | 0 | 6 |
| 1 | 0 | 5 |
Second slot structure configuration (2) in the descending backhaul subframe of table 4
| Configuration | Play point symbol | Terminal symbol |
| 0 | 0 | 6 |
| 1 | 0 | 5 |
| 2 | 0 | 4 |
Below in conjunction with example, the embodiment of the present invention is realized process to be described in detail.
Following example are all assumed TP_TH1=TP_TH2=1568Ts, DTH1=DTH2=15.3 kilometers, in other embodiments
In, TP_TH1、TP_TH2、DTH1、DTH2Other values the most desirable.
In following example, involved signaling field name " pdsch-End-r11 ", " synchronization-flag-r11 " do not have
Have specific characteristics, it is also possible to other titles exist.
Preferred embodiment one
This preferred embodiment one describes base station configuration terminal symbol and sends the process to relay station.
Fig. 6 is the interaction diagrams of the downlink return sub-frame structure configuration method according to the preferred embodiment of the present invention one, such as Fig. 6 institute
Show, as the descending propagation delay T of relay stationP=2048TSExceed thresholding TP_TH2=1568TS, then descending by relay station of base station
In backhaul subframe, the terminal symbol of second slot is configured to symbol 6, and at high-level signaling RN-SubframeConfig
In field pdsch-End-r11ENUMERATED (5,6) in information element, by pdsch-End-r11
Binary sequence value be configured to " 1 ", send to relay station, the terminal of second slot in the instruction descending backhaul subframe of relay station
It is configured to symbol 6.
Preferred embodiment two
This preferred embodiment two describes base station configuration definition status and sends the process to relay station.
Descending propagation delay T when base station to relay stationP=1024TSLess than thresholding TP_TH1=1568TS, then base station is by relay station
Descending definition status be configured to synchronous regime, and in high-level signaling RN-SubframeConfig information element
Field synchronization-flag-r11INTEGER (0,1) in, by the binary system of synchronization-flag-r11
Sequential value is configured to " 0 ", sends to relay station, and the descending definition status of instruction relay station is configured to synchronous regime.
Preferred embodiment three
This preferred embodiment three describes base station configuration definition status and sends the process to relay station.
Distance D=0.5km between base station and relay station is less than thresholding DTH1=15.3km, then descending fixed by relay station of base station
Time state be configured to synchronous regime, and the field in high-level signaling RN-Subframe Config information element
In synchronization-flag-r11INTEGER (0,1), by the binary sequence value of synchronization-flag-r11
Being configured to " 0 ", send to relay station, the descending definition status of instruction relay station is configured to synchronous regime.
Preferred embodiment four
This preferred embodiment four describes base station configuration terminal symbol and sends the process to relay station.
Distance D=0.5km between base station and relay station is less than thresholding DTH1=15.3km, then base station is by descending time of relay station
In journey subframe, the terminal symbol of second slot is configured to symbol 6, and at high-level signaling RN-SubframeConfig information
In field pdsch-End-r11ENUMERATED (5,6) in element, by the binary system sequence of pdsch-End-r11
Train value is configured to " 1 ", sends to relay station, the terminal symbol configuration of second slot in the descending backhaul subframe of instruction relay station
For symbol 6.
Preferred embodiment five
This preferred embodiment five describes OAM module configuration definition status the process sent to base station and relay station.
Fig. 7 is the interaction diagrams of the downlink return sub-frame structure configuration method according to the preferred embodiment of the present invention five, such as Fig. 7 institute
Show, the descending propagation delay T of base station to relay stationP=1024TSLess than thresholding TP_TH1=1568TS, then during OAM module is incited somebody to action
The descending definition status at station of continuing is configured to asynchronous regime.And in OAM signaling, by field synchronization-flag-r11
Binary sequence value be configured to " 1 ", send to base station and relay station, the descending definition status of instruction relay station be configured to non-with
Step state.
Preferred embodiment six
This preferred embodiment six describes base station configuration terminal symbol and sends the process to relay station.
Base station is to the descending propagation delay T of relay stationP=2048TSExceed thresholding TP_TH2=1568TS, then base station is by relay station
In descending backhaul subframe, the terminal symbol of second slot is configured to symbol 6, and in X2 interface signaling, by field
The binary sequence value of pdsch-End-r11 is configured to " 1 ", sends to relay station, in the descending backhaul subframe of instruction relay station the
The terminal symbol of two slot is configured to symbol 6.
Preferred embodiment seven
This preferred embodiment seven describes OAM module configuration terminal symbol and sends to relay station, is then forwarded to base by relay station
The process stood.
Fig. 8 is the interaction diagrams of the downlink return sub-frame structure configuration method according to the preferred embodiment of the present invention seven, such as Fig. 8 institute
Show, the descending propagation delay T of base station to relay stationP=2048TSExceed thresholding TP_TH2=1568TS, then during OAM module is incited somebody to action
In the descending backhaul subframe at station that continues, the terminal symbol of second slot is configured to symbol 4, and in OAM signaling, by field
The binary sequence value of pdsch-End-r11 is configured to " 00 ", sends to relay station, then is forwarded to base station by relay station, instruction
In the descending backhaul subframe of relay station, the terminal symbol of second slot is configured to symbol 4.
Preferred embodiment eight
This preferred embodiment eight describes OAM module configuration definition status and sends to relay station, is then forwarded to base by relay station
The process stood.
Fig. 9 is the interaction diagrams of the downlink return sub-frame structure configuration method according to the preferred embodiment of the present invention eight, such as Fig. 9 institute
Show, the descending propagation delay T of base station to relay stationP=2048TSExceed thresholding TP_TH2=1568TS, then during OAM module is incited somebody to action
The descending definition status at station of continuing is configured to synchronous regime, and in OAM signaling, by field synchronization-flag-r11
Binary sequence value be configured to " 0 ", send to base station, then be forwarded to relay station by base station, the descending timing of instruction relay station
State is configured to synchronous regime.
The terminal symbol of second slot in the descending backhaul subframe of relay station is configured to symbol 4 by base station, and at high-level signaling
Field pdsch-End-r11ENUMERATED (4,5) in RN-SubframeConfig information element
In, the binary sequence value of field pdsch-End-r11 is configured to " 0 ", sends to relay station, indicate the descending of relay station
In backhaul subframe, the terminal symbol of second slot is configured to symbol 4.
Preferred embodiment nine
This preferred embodiment nine describes OAM module configuration definition status and sends to relay station, is then forwarded to base by relay station
The process stood.
Distance D=0.5km between base station and relay station is less than thresholding DTH1=15.3km, then OAM module is by relay station
Descending definition status is configured to synchronous regime.And in OAM signaling, by the binary system of field synchronization-flag-r11
Sequential value is configured to " 0 ", sends to base station, then is forwarded to relay station by base station, the descending definition status configuration of instruction relay station
For synchronous regime.
Preferred embodiment ten
This preferred embodiment ten describes relay station self configuration terminal symbol, is then forwarded to the process of base station.
Figure 10 is the interaction diagrams of the downlink return sub-frame structure configuration method according to the preferred embodiment of the present invention ten, such as Figure 10
Shown in, the descending propagation delay T of base station to relay stationP=2048TSExceed thresholding TP_TH2=1568TS, then relay station self will
In the descending backhaul subframe of relay station, the terminal symbol of second slot is configured to symbol 6.And in high-level signaling, by field
The binary sequence value of pdsch-End-r11 is configured to " 1 ", send to base station, instruction relay station descending backhaul subframe in second
The terminal symbol of individual slot is configured to symbol 6.
Preferred embodiment 11
This preferred embodiment 11 describes relay station self configuration definition status, is then forwarded to the process of base station.
Distance D=0.5km between base station and relay station is less than thresholding DTH1=15.3km, then relay station self is by relay station
Descending definition status is configured to synchronous regime.And in high-level signaling, by the binary system of field synchronization-flag-r11
Sequential value is configured to " 0 ", sends to base station, and the descending definition status of instruction relay station is configured to synchronous regime.
Preferred embodiment 12
This preferred embodiment 12 describes base station configuration terminal symbol and sends the process to relay station.
Distance D=0.5km between base station and relay station is less than thresholding DTH1=15.3km, then base station is by descending time of relay station
In journey subframe, the terminal symbol of second slot is configured to symbol 5, and relay station definition status is configured to synchronous regime.And
Field pdsch-End-r11ENUMERATED in high-level signaling RN-SubframeConfig information element
In (4,5), the binary sequence value of pdsch-End-r11 is configured to " 1 ", sends to relay station, instruction relay station
In descending backhaul subframe, the terminal symbol of second slot is configured to symbol 5.
Further, base station field in high-level signaling RN-SubframeConfig information element
In synchronization-flag-r11INTEGER (0,1), by the binary sequence of synchronization-flag-r11
Value is configured to " 0 ", sends to relay station, and the descending definition status of instruction relay station is configured to synchronous regime.
It should be noted that can be at the computer of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing
System performs, and, although show logical order in flow charts, but in some cases, can be to be different from this
The step shown or described by order execution at place.
Embodiments providing a kind of downlink return sub-frame structure configuration system, this downlink return sub-frame structure configuration system can
For realizing above-mentioned downlink return sub-frame structure configuration method.Figure 11 is downlink return sub-frame structure according to embodiments of the present invention
The structured flowchart of configuration system, as shown in figure 11, including downlink return sub-frame structure configuration device 112 and relay station 114, its
Middle downlink return sub-frame structure configuration device 112 includes the first configuration module 1122 and the second configuration module 1124, below to it
Structure is described in detail.
First configuration module 1122, is used for the descending propagation delay according to base station to relay station 114 or base station and relay station 114
Between distance, the terminal symbol of backhaul transport and/or relay station 114 on second slot of backhaul subframe descending to relay station 114
Definition status configure；Second configuration module 1124, is connected to the first configuration module 1122, for according to the first configuration mould
The terminal symbol of block 1122 configuration and/or definition status, configurating downlink return sub-frame structure.
Preferably, in the second configuration module 1124 is in base station or to be in OAM module interior or be in relay station 114.
It should be noted that the downlink return sub-frame structure configuration system described in device embodiment is implemented corresponding to above-mentioned method
Example, its concrete implementation process had carried out detailed description in embodiment of the method, had not repeated them here.
In sum, according to the abovementioned embodiments of the present invention, it is provided that a kind of downlink return sub-frame structure configuration method and system.
The present invention passes through flexible configuration this terminal symbol and/or synchronous regime, and then configurating downlink return sub-frame structure, can avoid relaying
Stand downlink reception end and transmitting terminal generation self-interference, and then can ensure that systematic function and user's impression.
Obviously, those skilled in the art should be understood that each module of the above-mentioned present invention or each step can be with general calculating
Device realizes, and they can concentrate on single calculating device, or is distributed on the network that multiple calculating device is formed,
Alternatively, they can realize with calculating the executable program code of device, it is thus possible to be stored in storing device
In perform by calculating device, or they are fabricated to respectively each integrated circuit modules, or by the multiple modules in them
Or step is fabricated to single integrated circuit module and realizes.So, the present invention is not restricted to the combination of any specific hardware and software.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for those skilled in the art
For, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of being made, etc.
With replacement, improvement etc., should be included within the scope of the present invention.
Claims (8)
1. a downlink return sub-frame structure configuration method, it is characterised in that including:
The distance between descending propagation delay or described base station and described relay station according to base station to relay station, to described
On second slot of the descending backhaul subframe of relay station, the terminal symbol of backhaul transport and/or the definition status of described relay station are carried out
Configuration；
Described relay station is according to described terminal symbol and/or described definition status, configurating downlink return sub-frame structure
Wherein, the terminal symbol of backhaul transport and/or described relaying on second slot of backhaul subframe descending to described relay station
The definition status stood carries out configuration and includes one of:
Described relay station is to the terminal symbol of backhaul transport on self second slot of descending backhaul subframe and/or definition status
Configure；
The terminal symbol of backhaul transport and/or described relay station on second slot of base station backhaul subframe descending to described relay station
Definition status configure；Described base station by high-level signaling and/or X2 interface signaling configuration result is informed described in
Continue station；
The terminal symbol of backhaul transport on second slot of oam OAM module backhaul subframe descending to described relay station
Number and/or the definition status of described relay station configure；Configuration result is accused by described OAM module by OAM signaling
Know described relay station；Wherein, configuration result is informed that described relay station includes by OAM signaling by described OAM module:
Described OAM module by described OAM signaling by described configuration result signals base；Described base station by high-level signaling and
/ or X2 interface signaling and/or directly pass-through mode inform described relay station；
Wherein, described high-level signaling and/or described X2 interface signaling and/or described OAM signaling include: the second binary system
Sequence, wherein said second binary sequence is used for indicating described definition status to be configured to synchronous regime or asynchronous regime.
Method the most according to claim 1, it is characterised in that in base station to described relay station descending propagation delay less than or
In the case of the first thresholding set in advance, backhaul transport on second slot of backhaul subframe descending to described relay station
Terminal symbol and/or the definition status of described relay station carry out configuration and include one below:
Configuring described terminal symbol is symbol 5 and/or to configure described definition status be synchronous regime；
Configuring described terminal symbol is symbol 6 and/or to configure described definition status be asynchronous regime.
Method the most according to claim 1, it is characterised in that exceed to the descending propagation delay of described relay station in base station or
In the case of being not less than the second thresholding set in advance, backhaul transport on second slot of backhaul subframe descending to described relay station
Terminal symbol and/or the definition status of described relay station carry out configuration and include one below:
Configuring described terminal symbol is symbol 4 and/or to configure described definition status be synchronous regime；
Configuring described terminal symbol is symbol 6 and/or to configure described definition status be asynchronous regime.
Method the most according to claim 1, it is characterised in that the distance between base station and described relay station is less than or does not surpasses
In the case of crossing the 3rd thresholding set in advance, the end of backhaul transport on second slot of backhaul subframe descending to described relay station
The definition status of point symbol and/or described relay station carries out configuration and includes one below:
Configuring described terminal symbol is symbol 5 and/or to configure described definition status be synchronous regime；
Configuring described terminal symbol is symbol 6 and/or to configure described definition status be asynchronous regime.
Method the most according to claim 1, it is characterised in that the distance between base station and described relay station exceedes or the lowest
In the case of the 4th thresholding set in advance, the end of backhaul transport on second slot of backhaul subframe descending to described relay station
The definition status of point symbol and/or described relay station carries out configuration and includes one below:
Configuring described terminal symbol is symbol 4 and/or to configure described definition status be synchronous regime；
Configuring described terminal symbol is symbol 6 and/or to configure described definition status be asynchronous regime.
Method the most according to claim 1, it is characterised in that after described relay station receives described configuration result, institute
Method of stating also includes: described relay station is by high-level signaling and/or X2 interface signaling and/or directly forwards described configuration knot
Really signals base.
7. a downlink return sub-frame structure configuration system, it is characterised in that include downlink return sub-frame structure configuration device and relaying
Standing, wherein said downlink return sub-frame structure configuration device includes:
First configuration module, for according to the descending propagation delay of base station to described relay station or described base station with described in
Continue the distance between station, the terminal symbol of backhaul transport and/or institute on second slot of backhaul subframe descending to described relay station
The definition status stating relay station configures；
Second configuration module, for according to described terminal symbol and/or described definition status, configurating downlink return sub-frame structure；
Wherein, the terminal symbol of backhaul transport and/or described relaying on second slot of backhaul subframe descending to described relay station
The definition status stood carries out configuration and includes one of:
Described relay station is to the terminal symbol of backhaul transport on self second slot of descending backhaul subframe and/or definition status
Configure；
The terminal symbol of backhaul transport and/or described relay station on second slot of base station backhaul subframe descending to described relay station
Definition status configure；Described base station by high-level signaling and/or X2 interface signaling configuration result is informed described in
Continue station；
The terminal symbol of backhaul transport on second slot of oam OAM module backhaul subframe descending to described relay station
Number and/or the definition status of described relay station configure；Configuration result is accused by described OAM module by OAM signaling
Know described relay station；Wherein, configuration result is informed that described relay station includes by OAM signaling by described OAM module:
Described OAM module by described OAM signaling by described configuration result signals base；Described base station by high-level signaling and
/ or X2 interface signaling and/or directly pass-through mode inform described relay station；
Wherein, described high-level signaling and/or described X2 interface signaling and/or described OAM signaling include: the second binary system
Sequence, wherein said second binary sequence is used for indicating described definition status to be configured to synchronous regime or asynchronous regime.
System the most according to claim 7, it is characterised in that described second configures in module is in base station or be in operation
Maintenance management OAM module is interior or is in described relay station.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110139205.4A CN102801461B (en) | 2011-05-26 | Downlink return sub-frame structure configuration method and system | |
| PCT/CN2012/075442 WO2012159534A1 (en) | 2011-05-26 | 2012-05-14 | Method and system for configuring structure of downlink backhaul subframe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110139205.4A CN102801461B (en) | 2011-05-26 | Downlink return sub-frame structure configuration method and system |
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| Publication Number | Publication Date |
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| CN102801461A CN102801461A (en) | 2012-11-28 |
| CN102801461B true CN102801461B (en) | 2016-12-14 |
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|---|---|---|---|---|
| CN101309501A (en) * | 2007-05-16 | 2008-11-19 | 华为技术有限公司 | Signal transmission method, base station and relay station |
| WO2010087174A1 (en) * | 2009-01-29 | 2010-08-05 | パナソニック株式会社 | Base station apparatus and transmission method |
| CN102300308A (en) * | 2010-06-25 | 2011-12-28 | 中兴通讯股份有限公司 | Relay station downlink transmission method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101309501A (en) * | 2007-05-16 | 2008-11-19 | 华为技术有限公司 | Signal transmission method, base station and relay station |
| WO2010087174A1 (en) * | 2009-01-29 | 2010-08-05 | パナソニック株式会社 | Base station apparatus and transmission method |
| CN102300308A (en) * | 2010-06-25 | 2011-12-28 | 中兴通讯股份有限公司 | Relay station downlink transmission method and system |
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