CN101868003B - Signal transmission method and device for downlink relay link - Google Patents
Signal transmission method and device for downlink relay link Download PDFInfo
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- CN101868003B CN101868003B CN2009100824782A CN200910082478A CN101868003B CN 101868003 B CN101868003 B CN 101868003B CN 2009100824782 A CN2009100824782 A CN 2009100824782A CN 200910082478 A CN200910082478 A CN 200910082478A CN 101868003 B CN101868003 B CN 101868003B
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Abstract
The invention discloses a signal transmission method a signal transmission device for a downlink relay link. The method comprises that: a downlink sub-frame sent by an evolution base station comprises a first control signaling area and a data area, the first control signaling area is an area for transmitting PCFICH, PDCCH and PHICH, the data area comprises a special area and a conventional PDSCH area on a frequency domain, the special area comprises a second control signaling area and a conventional PDSCH area according to a time division mode, the second control signaling area is in front of the special PDSCH area and used for transmitting downlink control signals sent to relay node equipment or R10 macro UE by the base station, the special PDSCH area is used for transmitting downlink data signals sent to the relay node equipment and/or the R10 macro UE by the evolution base station, and the conventional PDSCH area is used for transmitting the downlink data signals to one or more nodes in the R10 macro UE, the R8 macro UE and the relay node equipment by the evolution base station. According to the method and the device, the relay node equipment and the R10 macro UE can make full use of physical resources to perform downlink data transmission and are compatible with an R8 user terminal.
Description
Technical field
The present invention relates to communication technical field, be meant a kind of method for transmitting signals and device of downlink relay link especially.
Background technology
(LTE-Advanced, LTE-A) system will adopt the method for relaying (Relay) cooperation transmission to improve the service quality and the Extended Cell covering of Cell Edge User at the advanced Long Term Evolution of 3GPP.In the relay transmission of LTE-A system, frame structure can be divided descending access zone, down mixing regional, up access zone and four zones, up Mixed Zone.Referring to shown in Figure 1, in descending access zone, evolution base station (eNB) and via node equipment (RN) send data to grand (Macro) user terminal (UE) and relaying (Relay) UE respectively; In the down mixing zone, eNB sends data to RN and Macro UE; In up access zone, Macro UE and Relay UE send data to eNB and RN respectively; In up Mixed Zone, Macro UE and RN send data to eNB.
Need to prove, and Long Term Evolution (Long Term Evolution, LTE) system supports Rel-8 UE, is called for short R8 UE, the LTE-A system also will support Rel-10 UE, be called for short R10 UE.
In the LTE-A system; In order to make the Relay network can compatible R8 UE; Promptly keep Relay UE identical frame structure to be arranged with Macro UE; Just some subframe is not sent or is received, and has adopted the mode of Multicast Broadcast Single Frequency Network (MBSFN) subframe to realize the transfer of data of repeated link, and this scheme is following:
In up Mixed Zone, promptly RN is when eNB sends data, and Relay UE mourns in silence and promptly do not transmit any upward signal;
In the down mixing zone; Be eNB when RN sends data, the frame structure of Relay is configured to the MBSFN subframe, promptly has the downgoing control signal zone of 1 or 2 OFDM symbol; Be used for Relay and send downgoing control signal to the UE of its service; (Relay can not receive and come from signal of base station this moment, and Relay receives the repeated link data that send the base station after this, and at this moment Relay does not send data to the UE of its service.
In present LTE-A system design, consider that in the down mixing zone base station transmits is in the same place for the repeated link data of Relay and control signal multiplex, transmits through the data area of MBSFN subframe.But, but do not provide and how in downlink relay link, to carry out the concrete implementation that signal transmits through multiplexing MBSFN subframe.
Summary of the invention
The present invention provides a kind of method for transmitting signals and device of downlink relay link, carries out the signal transmission in order to be implemented in the downlink relay link through multiplexing descending sub frame.
The signaling method of a kind of downlink relay link that the embodiment of the invention provides, this method comprises:
In downlink relay link, evolution base station sends descending sub frame,
Said descending sub frame comprises first control signaling area and the data area, and the said first control signaling area comprises transmitting physical control format indicating channel PCFICH, physical downlink control channel PDCCH and the automatic request retransmission indicating channel of physical mixed PHICH zone; Said data area comprises special area and conventional PDSCH zone on frequency domain, said special area comprises the second control signaling area, specific physical DSCH Downlink Shared Channel PDSCH zone according to time division way, wherein,
The said second control signaling area was used to transmit the downgoing control signal of base station to via node equipment and/or the grand user terminal transmission of R10 before said special PDSCH zone,
Said special PDSCH zone is used to transmit the downlink data signal of evolution base station to via node equipment and/or the grand user terminal transmission of R10,
Said conventional PDSCH zone is used for transmitting the downlink data signal of evolution base station to one or more nodes transmissions of the grand user terminal of R10, the grand user terminal of R8 and via node equipment.
The sender unit of a kind of downlink relay link that the embodiment of the invention provides comprises:
Generation unit is used for being created on the descending sub frame of downlink relay link,
Said descending sub frame comprises first control signaling area and the data area, and the said first control signaling area comprises transmitting physical control format indicating channel PCFICH, physical downlink control channel PDCCH and the automatic request retransmission indicating channel of physical mixed PHICH zone; Said data area comprises special area and conventional PDSCH zone on frequency domain, said special area comprises the second control signaling area, specific physical DSCH Downlink Shared Channel PDSCH zone according to time division way, wherein,
The said second control signaling area was used to transmit the downgoing control signal of base station to via node equipment and/or the grand user terminal transmission of R10 before said special PDSCH zone,
Said special PDSCH zone is used to transmit the downlink data signal of evolution base station to via node equipment and/or the grand user terminal transmission of R10,
Said conventional PDSCH zone is used for transmitting the downlink data signal of evolution base station to one or more nodes transmissions of the grand user terminal of R10, the grand user terminal of R8 and via node equipment
Transmitting element is used to send descending sub frame.
Signal acceptance method in a kind of down link that the embodiment of the invention provides comprises:
Via node equipment detects R-PCFICH according to the frequency domain position that obtains in advance, obtains R-PDCCH and the shared symbolic number of R-PHICH;
Via node equipment obtains the position and the size in R-PDCCH zone according to said symbolic number; And in the R-PDCCH zone, detect dispatch acquisition evolution base station to the downlink data position that via node equipment sends, said downlink data position is special PDSCH zone and/or conventional PDSCH zone;
Receive the downlink data that evolution base station sends according to the downlink data position that obtains.
A kind of via node equipment that the embodiment of the invention provides comprises:
First module is used for detecting R-PCFICH according to the frequency domain position that obtains in advance, obtains R-PDCCH and the shared symbolic number of R-PHICH;
Downlink data position acquiring unit; Be used for obtaining the position and the size in R-PDCCH zone according to said symbolic number; And in the R-PDCCH zone, detect dispatch acquisition evolution base station to the downlink data position that via node equipment sends, said downlink data position is special PDSCH zone and/or conventional PDSCH zone;
Receiving element is used for receiving the downlink data that evolution base station sends according to the downlink data position that obtains.
Signal acceptance method in a kind of down link that the embodiment of the invention provides, this method comprises:
The grand user terminal of R10 detects dispatch at PDCCH, detects at R-PCFICH according to the frequency domain position that obtains in advance and obtains the shared symbolic number of transmission R-PDCCH;
The grand user terminal of R10 obtains the position and the size in R-PDCCH zone according to the shared symbolic number of transmission R-PDCCH; And in the R-PDCCH zone, detect dispatch; Detect the dispatch that obtains according in the PDCCH zone, detecting in the dispatch obtain and/or the R-PDCCH zone; Obtain evolution base station to the downlink data position that the grand user terminal of R10 sends, said downlink data position is special in PDSCH zone and/or conventional PDSCH zone;
Receive the downlink data that evolution base station sends according to the downlink data position that obtains.
A kind of user terminal that the embodiment of the invention provides comprises:
First module is used for detecting dispatch at PDCCH, detects at R-PCFICH according to the frequency domain position that obtains in advance and obtains the shared symbolic number of transmission R-PDCCH;
Downlink data position acquiring unit; Be used for obtaining the position and the size in R-PDCCH zone according to the shared symbolic number of transmission R-PDCCH; And in the R-PDCCH zone, detect dispatch; Detect the dispatch that obtains according in the PDCCH zone, detecting in the dispatch obtain and/or the R-PDCCH zone, obtain evolution base station to the downlink data position that the grand user terminal of R10 sends, said downlink data position is special PDSCH zone and/or conventional PDSCH zone;
Receiving element is used for receiving the downlink data that evolution base station sends according to the downlink data position that obtains.
Signal acceptance method in a kind of down link that the embodiment of the invention provides, this method comprises:
The resource allocation territory of the grand user terminal of R10 from detected dispatch in the PDCCH zone obtains the shared frequency domain position information in special PDSCH zone, utilizes said frequency domain position information to detect R-PCFICH and obtains the shared symbolic number of transmission R-PDCCH;
The grand user terminal of R10 obtains the position and the size in R-PDCCH zone according to the shared symbolic number of transmission R-PDCCH, and in the R-PDCCH zone, detects dispatch; Obtain evolution base station to the downlink data position that the grand user terminal of R10 sends according in the R-PDCCH zone, detecting the dispatch that obtains, said downlink data position is special PDSCH zone and/or conventional PDSCH zone;
Receive the downlink data that evolution base station sends according to the downlink data position that obtains.
The embodiment of the invention provides a kind of user terminal, comprising:
First module is used for obtaining the shared frequency domain position information in special PDSCH zone from the resource allocation territory of detected dispatch in the PDCCH zone, utilizes said frequency domain position information to detect R-PCFICH and obtains the shared symbolic number of transmission R-PDCCH;
Downlink data position acquiring unit is used for obtaining the position and the size in R-PDCCH zone according to the shared symbolic number of transmission R-PDCCH, and in the R-PDCCH zone, detects dispatch; Obtain evolution base station to the downlink data position that the grand user terminal of R10 sends according in the R-PDCCH zone, detecting the dispatch that obtains, said downlink data position is special in PDSCH zone and/or conventional PDSCH zone.
The method for transmitting signals of the downlink relay link of the embodiment of the invention makes the grand UE of via node equipment and R10 can utilize all physical resources to carry out downlink data transmission fully, and has guaranteed the compatibility to R8 user.
Description of drawings
Fig. 1 is used for Relay frame structure sketch map for MBSFN subframe in the prior art;
Fig. 2 is the frame structure sketch map of descending sub frame of the downlink relay link of the embodiment of the invention;
Fig. 3 receives the schematic flow sheet of the downlink data of evolution base station transmission for via node equipment;
Fig. 4 is a kind of schematic flow sheet that the grand user terminal of R10 receives the downgoing control signal of evolution base station transmission;
Fig. 5 is the another kind of schematic flow sheet that the grand user terminal of R10 receives the downgoing control signal of evolution base station transmission.
Embodiment
In embodiments of the present invention; Referring to shown in Figure 2, in downlink relay link, the descending sub frame that evolution base station sends comprises first control signaling area and the data area; The said first control signaling area is the zone that is used to transmit PCFICH, PDCCH and PHICH; Said data area comprises special area and conventional PDSCH zone on frequency domain, said special area comprises the second control signaling area, specific physical DSCH Downlink Shared Channel PDSCH zone according to time division way, and the width on frequency domain of said special area shown in Fig. 2 is M PRB; Wherein, the integer of 0＜=M＜=downlink system bandwidth.The time span in special PDSCH zone is a 14-K OFDM symbol.
Shown in Fig. 2, the first control signaling area comprises PCFICH, PDCCH, PHICH zone, and this is identical with prior art, but said PHICH zone can be used to transmit the uplink retransmission indication to grand user terminal of R8 and/or the grand user terminal of R10.The first control signaling area takies K=1 or 2 OFDM symbols.Top n OFDM symbol in special area is the second control signaling area.Wherein, the mark A among Fig. 2 can be arranged in the optional position in PDCCH and PHICH zone, is illustrated in this band of position and can transmits the control signaling of sending to the grand user terminal of R8.Mark B among Fig. 2 can be arranged in the optional position in PDCCH and PHICH zone, is illustrated in the shared frequency location of this zone transmission special area.
The said second control signaling area is used to transmit the downgoing control signal that send to via node equipment the base station, or, the downgoing control signal that the transmission evolution base station sends to the grand user terminal of R10.The said second control signaling area comprises that transmission is to Physical Control Format Indicator Channel (R-PCFICH), the Physical Downlink Control Channel (R-PDCCH) of relaying and the zone that is directed against the automatic request retransmission indicating channel of physical mixed (R-PHICH) of relaying.Wherein, R-PCFICH takies on first OFDM symbol in the second control signaling area; Be used to transmit R-PDCCH and the shared symbolic number indication information of R-PHICH, promptly indicate the length N (N is the integer of 0＜=N＜=14-K) of this control signaling area, the symbolic number that promptly takies.R-PCFICH takies the part frequency domain resource of the second control area start-up portion; The time span of the second control signaling area is N; The time span in R-PDCCH and R-PHICH zone is N; Mark C among Fig. 2 can be positioned at the optional position in R-PDCCH and R-PHICH zone, is used to indicate the region of base station to the downgoing control signal of via node equipment or the grand user terminal transmission of R10, and this zone can be special PDSCH zone and/or conventional PDSCH zone.Said R-PHICH is used to transmit the uplink retransmission indication information to relaying.
Said special PDSCH zone is used to transmit the downlink data signal that evolution base station sends to via node equipment, or, the downlink data signal that the transmission evolution base station sends to the grand user terminal of R10.Shown in Fig. 2, the time span in special PDSCH zone is 14-K-N OFDM symbol (is example with conventional CP).Special PDSCH zone width on frequency domain is M PRB, wherein, the integer of 0＜=M＜=downlink system bandwidth, this M PRB can be continuous, also can be discontinuous.With conventional CP is example, and 1 sub-frame (1ms) comprises 14 OFDM symbols.
Said conventional PDSCH zone is used for transmitting one or more of downlink data signal that downlink data signal that downlink data signal that evolution base station sends to the grand user terminal of R10, transmission evolution base station send to the grand user terminal of R8 and transmission evolution base station send to via node equipment.Said conventional PDSCH length zone time is 14-K OFDM symbol.
Need to prove that to the grand user terminal transmitting downlink data of R8, the corresponding downstream control signal is in the transmission of PDCCH/PHICH zone in conventional PDSCH zone, therefore, the grand user terminal of R8 is not known the existence of special area.
Said special PDSCH zone and the said second control signaling area can take identical or different frequency domain position.Said special PDSCH zone also can take continuous or discrete frequency domain resource, and the said second control signaling area also can take continuous or discrete frequency domain resource.
Can realize sending downlink data through following mode to the grand user terminal of via node equipment, the grand user terminal of R8 and R10:
In order to realize correct downlink data receiving; Need the frequency domain position in special PDSCH zone be notified to grand user terminal of R10 and via node equipment; Can realize prenoticing the frequency domain position in special PDSCH zone through system broadcasts or to the exclusive high-level signaling of via node equipment or the grand user terminal of R10; And the base station can be according to current resource situation, the PRB number and the position of the frequency domain resource that the change special area takies in system.
Such as: a kind of mode is the method for semi-static configuration; The frequency domain information that just special area is taken; It is shared M PRB frequency domain position in system; Notice is given via node equipment and R10 user terminal, when the base station changes according to current resource situation needs, can the frequency domain information that the special area that change takies be notified to grand user terminal of R10 and via node equipment once more.Another kind of mode is to adopt through the dynamic dispatching signaling method to notify the frequency domain position in special PDSCH zone to give the R10 user terminal; It is the frequency domain information that the base station takies special area; Be that the shared M of a special area PRB notifies the user terminal to R10 at the frequency domain position of system through dispatch; Simultaneously this information is prenoticed to via node equipment; When the base station changes according to current resource situation needs, can the frequency domain information that the special area that change takies be notified to via node equipment once more.
If adopt the grand user terminal of frequency domain position notice R10 of notifying special PDSCH zone through the dynamic dispatching signaling method; Then can utilize the resource allocation territory in the dispatch of said PDCCH transmission can indicate the shared frequency domain position in special PDSCH zone; Utilize the shared symbolic number of said R-PCFICH transmission R-PDCCH, the dispatch of said R-PDCCH transmission is used to indicate the downlink data position of evolution base station to the grand user terminal transmission of R10.
Fig. 3 and embodiment illustrated in fig. 4 for above-mentioned first kind of embodiment that mode is notified.
And; In embodiment illustrated in fig. 3; In order to make via node equipment correctly receive the downlink data that evolution base station sends; Said R-PCFICH can take the part frequency domain resource of first OFDM symbol in the said second control signaling area and send dispatch, is used to transmit R-PDCCH and the shared symbolic number indication information of R-PHICH, promptly is used to indicate the length of the second control signaling area; The dispatch of said R-PDCCH transmission is used to indicate the downlink data position of evolution base station transmission, and said R-PHICH is used to transmit the re-transmission indication to relaying.
Like this, evolution base station can also can transmit in special PDSCH zone in conventional PDSCH zone transmission to the downlink data that via node equipment sends, and the corresponding downstream control signal is in R-PCFICH, R-PDCCH or the transmission of R-PHICH zone.
Therefore, referring to shown in Figure 3, the process of the downlink data that via node equipment reception evolution base station sends is following:
Step 301: the frequency domain position according to the special PDSCH zone that obtains in advance detects R-PCFICH, obtains R-PDCCH and the shared symbolic number of R-PHICH;
Step 302: via node equipment obtains the position and the size in R-PDCCH zone according to said symbolic number; And in the R-PDCCH zone, detect dispatch acquisition evolution base station to the downlink data position that via node equipment sends, said downlink data position is special PDSCH zone and/or conventional PDSCH zone;
Step 303: receive the downlink data that evolution base station sends according to the downlink data position that obtains.
In embodiment illustrated in fig. 4; In order to make the grand user terminal of R10 correctly receive the downlink data that evolution base station sends; The dispatch of said PDCCH transmission can also be used to indicate the downlink data position of evolution base station to the grand user terminal transmission of R10; Said R-PCFICH is used to transmit the shared symbolic number of R-PDCCH, and the dispatch of said R-PDCCH transmission can be used to indicate the downlink data signal position of evolution base station to the grand user terminal transmission of R10.
Like this, evolution base station can also can transmit in conventional PDSCH zone in special PDSCH zone to the downlink data that the grand user terminal of R10 sends, and the corresponding downstream control signal is sent in the PDCCH zone and the second control signaling area.
Here, need to notify grand user terminal with the frequency domain position in special PDSCH zone in advance, and the frequency domain position in special PDSCH zone is identical with the frequency domain position of the second control signaling area to R10.
Referring to shown in Figure 4, the downgoing control signal that the grand user terminal of R10 receives the evolution base station transmission may further comprise the steps:
The grand user terminal of step 401:R10 detects dispatch in the PDCCH zone, detects at R-PCFICH according to the regional frequency domain position of the special PDSCH that obtains in advance and obtains the shared symbolic number of transmission R-PDCCH;
The grand user terminal of step 402:R10 obtains the position and the size in R-PDCCH zone according to the shared symbolic number of transmission R-PDCCH; And in the R-PDCCH zone, detect dispatch; According to detecting the dispatch that obtains in dispatch that obtains in the detection of PDCCH zone and/or the R-PDCCH zone; Obtain evolution base station to the downlink data position that the grand user terminal of R10 sends, said downlink data position is special PDSCH zone and/or conventional PDSCH zone;
Step 403: receive the downlink data that evolution base station sends according to the downlink data position that obtains.
Referring to shown in Figure 5, the downgoing control signal that the grand user terminal of R10 receives the evolution base station transmission may further comprise the steps:
The grand user terminal of step 501:R10 resource allocation territory in the detected dispatch in the PDCCH zone obtains the shared frequency domain position information in special PDSCH zone, utilizes said frequency domain position information to detect R-PCFICH and obtains the shared symbolic number of transmission R-PDCCH;
The grand user terminal of step 502:R10 obtains the position and the size in R-PDCCH zone according to the shared symbolic number of transmission R-PDCCH, and in the R-PDCCH zone, detects dispatch; According in the R-PDCCH zone, detecting the dispatch that obtains, obtain evolution base station to the downlink data position that the grand user terminal of R10 sends, said downlink data position is special in PDSCH zone and/or conventional PDSCH zone;
Step 503: receive the downlink data that evolution base station sends according to the downlink data position that obtains.
In addition, the embodiment of the invention also provides a kind of sender unit of downlink relay link, comprising: generation unit and transmitting element.
Generation unit; Be used for being created on the descending sub frame of downlink relay link; Said descending sub frame comprises first control signaling area and the data area, and the said first control signaling area comprises transmitting physical control format indicating channel PCFICH, physical downlink control channel PDCCH and the automatic request retransmission indicating channel of physical mixed PHICH zone; Said data area comprises special area and conventional PDSCH zone on frequency domain, said special area comprises the second control signaling area, specific physical DSCH Downlink Shared Channel PDSCH zone according to time division way.The said second control signaling area is before said special PDSCH zone; Be used to transmit the downgoing control signal of base station to via node equipment and/or the grand user terminal transmission of R10; Said special PDSCH zone; Be used to transmit the downlink data signal of evolution base station to via node equipment and/or the grand user terminal transmission of R10; Said conventional PDSCH zone is used for transmitting the downlink data signal of evolution base station to one or more nodes transmissions of the grand user terminal of R10, the grand user terminal of R8 and via node equipment.
Transmitting element is used to send descending sub frame.
Can further include: notification unit, it is preceding to be used to send descending sub frame, and the frequency domain position that said special area is shared is prenoticed to trunking node or the grand user terminal of R10.Certainly, can realize through system broadcasts or to the exclusive high-level signaling of via node equipment or the grand user terminal of R10.
In the device of the embodiment of the invention, said special PDSCH zone can take identical frequency domain resource with the said second control signaling area.Said special PDSCH zone can take continuous or discrete frequency domain resource; The said second control signaling area takies continuous or discrete frequency domain resource.
Said R-PCFICH zone takies the part frequency domain resource on first OFDM symbol in the said second control signaling area, is used to transmit R-PDCCH and the shared symbolic number indication information of R-PHICH; The dispatch of said R-PDCCH transmission is used to indicate the downlink data position of evolution base station transmission, and said R-PHICH is used to transmit the uplink retransmission indication information to relaying.
The dispatch of said PDCCH zone transmission can be indicated the downlink data position of evolution base station to the grand user terminal transmission of R10; Said R-PCFICH can transmit in the zone the shared symbolic number of R-PDCCH, and the dispatch of said R-PDCCH transmission is used to indicate evolution base station can transmit the uplink retransmission indication information to the grand user terminal of R10 to downlink data signal position, said R-PHICH zone that the grand user terminal of R10 sends.
The shared frequency domain position of special area can be indicated in resource allocation territory in the dispatch of the transmission of said PDCCH; Said R-PCFICH can transmit the shared symbolic number of R-PDCCH, and the dispatch of said R-PDCCH transmission can be indicated the downlink data position of evolution base station to the grand user terminal transmission of R10.
Said PHICH zone also can be used to transmit the uplink retransmission indication to grand user terminal of R8 and/or the grand user terminal of R10.
Method corresponding shown in Figure 3, the via node equipment that the embodiment of the invention provides comprises:
First module is used for detecting R-PCFICH according to the frequency domain position that obtains in advance, obtains R-PDCCH and the shared symbolic number of R-PHICH;
Downlink data position acquiring unit; Be used for obtaining the position and the size in R-PDCCH zone according to said symbolic number; And in the R-PDCCH zone, detect dispatch acquisition evolution base station to the downlink data position that via node equipment sends, said downlink data position is special in PDSCH zone and/or conventional PDSCH zone;
Receiving element is used for receiving the downlink data that evolution base station sends according to the downlink data position that obtains.
Method corresponding shown in Figure 4, a kind of user terminal that the embodiment of the invention provides comprises:
First module is used in the PDCCH zone, detecting dispatch, detects at R-PCFICH according to the frequency domain position that obtains in advance and obtains the shared symbolic number of transmission R-PDCCH;
Downlink data position acquiring unit; Be used for obtaining the position and the size in R-PDCCH zone according to the shared symbolic number of transmission R-PDCCH; And in the R-PDCCH zone, detect dispatch; Detect the dispatch that obtains according in the PDCCH zone, detecting in the dispatch obtain and/or the R-PDCCH zone, obtain evolution base station to the downlink data position that the grand user terminal of R10 sends, said downlink data position is special in PDSCH zone and/or conventional PDSCH zone;
Receiving element is used for receiving the downlink data that evolution base station sends according to the downlink data position that obtains.
Method corresponding shown in Figure 5, a kind of user terminal that the embodiment of the invention provides comprises:
First module, the resource allocation territory that is used for detection dispatch in the PDCCH zone obtains the shared frequency domain position information in special PDSCH zone, utilizes said frequency domain position information to detect R-PCFICH and obtains the shared symbolic number of transmission R-PDCCH;
Downlink data position acquiring unit is used for obtaining the position and the size in R-PDCCH zone according to the shared symbolic number of transmission R-PDCCH, and in the R-PDCCH zone, detects dispatch; Obtain evolution base station to the downlink data position that the grand user terminal of R10 sends according in the R-PDCCH zone, detecting the dispatch that obtains, said downlink data position is special in PDSCH zone and/or conventional PDSCH zone.
Relay or R10 UE detect dispatch in the control area method and prior art are similar, promptly adopt the method realization of difference control signaling format being carried out blind Detecting.
The method for transmitting signals of the downlink relay link of the embodiment of the invention makes the grand UE of via node equipment and R10 can utilize all physical resources to carry out downlink data transmission fully, and has guaranteed the compatibility to R8 user.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (17)
1. the signaling method of a downlink relay link is characterized in that, this method comprises:
In downlink relay link, evolution base station sends descending sub frame,
Said descending sub frame comprises first control signaling area and the data area, and the said first control signaling area comprises transmitting physical control format indicating channel PCFICH, physical downlink control channel PDCCH and the automatic request retransmission indicating channel of physical mixed PHICH zone; Said data area comprises special area and conventional PDSCH zone on frequency domain, said special area comprises the second control signaling area, specific physical DSCH Downlink Shared Channel PDSCH zone according to time division way, wherein,
The said second control signaling area was used to transmit the downgoing control signal of base station to via node equipment and/or the grand user terminal transmission of R10 before said special PDSCH zone,
Said special PDSCH zone is used to transmit the downlink data signal of evolution base station to via node equipment and/or the grand user terminal transmission of R10,
Said conventional PDSCH zone is used for transmitting the downlink data signal of evolution base station to one or more nodes transmissions of the grand user terminal of R10, the grand user terminal of R8 and via node equipment three.
2. method according to claim 1 is characterized in that, said special PDSCH zone takies identical frequency domain resource with the said second control signaling area.
3. method according to claim 1 is characterized in that, said special PDSCH zone takies continuous or discrete frequency domain resource; The said second control signaling area takies continuous or discrete frequency domain resource.
4. method according to claim 1 is characterized in that, before evolution base station sent descending sub frame, this method further comprised:
The frequency domain position that said special area is shared is prenoticed to trunking node or the grand user terminal of R10.
5. method according to claim 4 is characterized in that, realize through system broadcasts or to the exclusive high-level signaling of via node equipment or the grand user terminal of R10 the base station.
6. method according to claim 1; It is characterized in that; The said second control signaling area comprises the Physical Control Format Indicator Channel R-PCFICH zone to relaying, the Physical Downlink Control Channel R-PDCCH zone that is directed against relaying and the zone that is directed against the automatic request retransmission indicating channel of the physical mixed R-PHICH of relaying
Said R-PCFICH zone takies the part frequency domain resource on first OFDM symbol in the said second control signaling area, is used to transmit R-PDCCH and the shared symbolic number indication information of R-PHICH; The dispatch of said R-PDCCH transmission is used to indicate the downlink data position of evolution base station transmission, and said R-PHICH is used to transmit the uplink retransmission indication information to relaying.
7. method according to claim 1 is characterized in that, the said second control signaling area comprises R-PCFICH, R-PDCCH and R-PHICH zone,
The dispatch of then said PDCCH zone transmission is used to indicate the downlink data position of evolution base station to the grand user terminal transmission of R10; Said R-PCFICH zone is used to transmit the shared symbolic number of R-PDCCH; The dispatch of said R-PDCCH transmission is used to indicate evolution base station to the downlink data signal position that the grand user terminal of R10 sends, and said R-PHICH zone is used to transmit the uplink retransmission indication information to the grand user terminal of R10.
8. method according to claim 1 is characterized in that, the said second control signaling area comprises the R-PCFICH zone, R-PDCCH is regional and R-PHICH is regional,
The shared frequency domain position of resource allocation territory indication special area in the dispatch of the transmission of said PDCCH; Said R-PCFICH is used to transmit the shared symbolic number of R-PDCCH, and the dispatch of said R-PDCCH transmission is used to indicate the downlink data position of evolution base station to the grand user terminal transmission of R10.
9. method according to claim 1 is characterized in that, said PHICH zone is used to transmit the uplink retransmission indication to grand user terminal of R8 and/or the grand user terminal of R10.
10. the sender unit of a downlink relay link is characterized in that, comprising:
Generation unit is used for being created on the descending sub frame that downlink relay link is sent,
Said descending sub frame comprises first control signaling area and the data area, and the said first control signaling area comprises transmitting physical control format indicating channel PCFICH, physical downlink control channel PDCCH and the automatic request retransmission indicating channel of physical mixed PHICH zone; Said data area comprises special area and conventional PDSCH zone on frequency domain, said special area comprises the second control signaling area, specific physical DSCH Downlink Shared Channel PDSCH zone according to time division way, wherein,
The said second control signaling area was used to transmit the downgoing control signal of base station to via node equipment and/or the grand user terminal transmission of R10 before said special PDSCH zone,
Said special PDSCH zone is used to transmit the downlink data signal of evolution base station to via node equipment and/or the grand user terminal transmission of R10,
Said conventional PDSCH zone is used for transmitting the downlink data signal of evolution base station to one or more nodes transmissions of the grand user terminal of R10, the grand user terminal of R8 and via node equipment three;
Transmitting element is used to send descending sub frame.
11. device according to claim 10 is characterized in that, also further comprises:
Notification unit was used for before sending descending sub frame, and the frequency domain position that said special area is shared is prenoticed to trunking node or the grand user terminal of R10.
12. the method for reseptance to claim 1 signal transmitted is characterized in that this method comprises:
Via node equipment detects the R-PCFICH zone according to the frequency domain position that obtains in advance, obtains R-PDCCH and the shared symbolic number of R-PHICH;
Via node equipment obtains the position and the size in R-PDCCH zone according to said symbolic number; And in the R-PDCCH zone, detect dispatch acquisition evolution base station to the downlink data position that via node equipment sends, said downlink data position is special PDSCH zone and/or conventional PDSCH zone;
Receive the downlink data that evolution base station sends according to the downlink data position that obtains.
13. a via node equipment is characterized in that, comprising:
First module is used for detecting R-PCFICH according to the frequency domain position that obtains in advance, obtains R-PDCCH and the shared symbolic number of R-PHICH;
Downlink data position acquiring unit; Be used for obtaining the position and the size in R-PDCCH zone according to said symbolic number; And in the R-PDCCH zone, detect dispatch acquisition evolution base station to the downlink data position that via node equipment sends, said downlink data position is special PDSCH zone and/or conventional PDSCH zone;
Receiving element is used for receiving the downlink data that evolution base station sends according to the downlink data position that obtains.
14. the method for reseptance to claim 1 signal transmitted is characterized in that this method comprises:
The grand user terminal of R10 detects dispatch in the PDCCH zone, detects at R-PCFICH according to the frequency domain position that obtains in advance and obtains the shared symbolic number of transmission R-PDCCH;
The grand user terminal of R10 obtains the position and the size in R-PDCCH zone according to the shared symbolic number of transmission R-PDCCH; And in the R-PDCCH zone, detect dispatch; Detect the dispatch that obtains according in the PDCCH zone, detecting in the dispatch obtain and/or the R-PDCCH zone; Obtain evolution base station to the downlink data position that the grand user terminal of R10 sends, said downlink data position is special PDSCH zone and/or conventional PDSCH zone;
Receive the downlink data that evolution base station sends according to the downlink data position that obtains.
15. a user terminal is characterized in that, comprising:
First module is used for detecting dispatch at PDCCH, detects at R-PCFICH according to the frequency domain position that obtains in advance and obtains the shared symbolic number of transmission R-PDCCH;
Downlink data position acquiring unit; Be used for obtaining the position and the size in R-PDCCH zone according to the shared symbolic number of transmission R-PDCCH; And in the R-PDCCH zone, detect dispatch; Detect the dispatch that obtains according in the PDCCH zone, detecting in the dispatch obtain and/or the R-PDCCH zone, obtain evolution base station to the downlink data position that the grand user terminal of R10 sends, said downlink data position is special PDSCH zone and/or conventional PDSCH zone;
Receiving element is used for receiving the downlink data that evolution base station sends according to the downlink data position that obtains.
16. the method for reseptance to claim 1 signal transmitted is characterized in that this method comprises:
The resource allocation territory of the grand user terminal of R10 from detected dispatch in the PDCCH zone obtains the shared frequency domain position information in special PDSCH zone, utilizes said frequency domain position information to detect R-PCFICH and obtains the shared symbolic number of transmission R-PDCCH;
The grand user terminal of R10 obtains the position and the size in R-PDCCH zone according to the shared symbolic number of transmission R-PDCCH, and in the R-PDCCH zone, detects dispatch; Obtain evolution base station to the downlink data position that the grand user terminal of R10 sends according in the R-PDCCH zone, detecting the dispatch that obtains, said downlink data position is special PDSCH zone and/or conventional PDSCH zone;
Receive the downlink data that evolution base station sends according to the downlink data position that obtains.
17. a user terminal is characterized in that, comprising:
First module is used for obtaining the shared frequency domain position information in special PDSCH zone from the resource allocation territory of detected dispatch in the PDCCH zone, utilizes said frequency domain position information to detect R-PCFICH and obtains the shared symbolic number of transmission R-PDCCH;
Downlink data position acquiring unit is used for obtaining the position and the size in R-PDCCH zone according to the shared symbolic number of transmission R-PDCCH, and in the R-PDCCH zone, detects dispatch; Obtain evolution base station to the downlink data position that the grand user terminal of R10 sends according in the R-PDCCH zone, detecting the dispatch that obtains, said downlink data position is special PDSCH zone and/or conventional PDSCH zone.
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| CN2009100824782A CN101868003B (en) | 2009-04-20 | 2009-04-20 | Signal transmission method and device for downlink relay link |
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| TW201236420A (en) * | 2010-12-22 | 2012-09-01 | Nec Casio Mobile Comm Ltd | Receiving device, receiving method and computer program |
| US10638464B2 (en) * | 2011-04-01 | 2020-04-28 | Futurewei Technologies, Inc. | System and method for transmission and reception of control channels in a communications system |
| CN102892201B (en) * | 2011-07-20 | 2018-02-09 | 中兴通讯股份有限公司 | The transmission method and device of PHICH symbol datas |
| CN102891727A (en) * | 2011-07-20 | 2013-01-23 | 中兴通讯股份有限公司 | Processing method and system for physical control format indicator channel |
| CN102904853B (en) * | 2011-07-27 | 2017-08-22 | 中兴通讯股份有限公司 | Send the method and system that the request of physical mixed adaptive retransmission indicates channel |
| CN107370577B (en) * | 2011-08-12 | 2020-06-19 | 松下电器（美国）知识产权公司 | Communication apparatus and retransmission control method |
| WO2013044522A1 (en) * | 2011-09-30 | 2013-04-04 | 富士通株式会社 | Method, base station, and user equipment for sending enhanced control signaling |
| US8787225B2 (en) * | 2012-07-11 | 2014-07-22 | Blackberry Limited | Phase-rotated reference signals for multiple antennas |
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