WO2013152731A1 - Drs transmission method and device - Google Patents
Drs transmission method and device Download PDFInfo
- Publication number
- WO2013152731A1 WO2013152731A1 PCT/CN2013/074101 CN2013074101W WO2013152731A1 WO 2013152731 A1 WO2013152731 A1 WO 2013152731A1 CN 2013074101 W CN2013074101 W CN 2013074101W WO 2013152731 A1 WO2013152731 A1 WO 2013152731A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- drs
- antenna port
- downlink
- downlink subframe
- subframe
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0014—Three-dimensional division
- H04L5/0023—Time-frequency-space
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
- H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0014—Three-dimensional division
- H04L5/0016—Time-frequency-code
Definitions
- the peak rate of the system is greatly improved compared to the LTE (Long Term Evolution) system, which requires downlink lGbps and uplink 500 Mbps. If only one carrier with a maximum bandwidth of 20MHz is used, the peak rate requirement cannot be reached. Therefore, the LTE-A system needs to extend the bandwidth that can be used by the user equipment (user equipment, also called the terminal), thereby introducing the CA (Carrier Aggregation) technology, which is more than the same e B (base station). A continuous or non-contiguous carrier is aggregated while serving the UE to provide the required rate. These aggregated carriers are also called a CC (Component Carrier). Each cell can be a member carrier, and cells (member carriers) under different eNBs cannot be aggregated. In order to ensure that UEs in the LTE system can work on each aggregated carrier, each carrier does not exceed 20 MHz at the maximum.
- LTE-A Rel-1 determines to add a new carrier type (ACT or Carrier Type, ACT or New Carrier Type, NCT) to the carrier aggregation system to enhance system frequency utilization and better. Support heterogeneous networks and reduce power consumption.
- ACT or Carrier Type ACT or New Carrier Type, NCT
- the working scheme for NCT is under discussion.
- CRS Cell-specific Reference Signals
- the NCT carrier independent operation is temporarily not supported.
- the NCT carrier is a synchronous carrier, that is, from the perspective of the receiving end. It can be seen that the NCT carrier and the legacy carrier are both synchronized in the time domain and the frequency domain, and the UE does not need to perform separate time-frequency synchronization processing on the NCT carrier.
- the second scenario is that the new type of carrier is a non-synchronous carrier. That is, from the perspective of the receiving end, there is a certain deviation between the NCT carrier and the legacy carrier in the time domain and the frequency domain. The UE needs to perform separate time-frequency synchronization processing on the NCT carrier. Therefore, it is necessary to reserve the PSS (Primary Synchronization Signal) SSS (Secondary Synchronization Signal) transmission in Rel-8.
- PSS Primary Synchronization Signal
- SSS Secondary Synchronization Signal
- the PSS has three binary sequences of length 62, which are transmitted every 5ms.
- the sequences used in the first two frames of a radio frame are the same, so 5ms timing can be obtained by PSS.
- SSS is a combination of two binary sequences of length 31, which are combined and scrambled by the scrambling sequence indicated by PSS.
- the combination of the two binary sequences of length 31 is different in the first half frame and the second half frame, so that the 10 ms timing can be obtained by SSS, that is, the timing start position of the radio frame is determined.
- PSS and SSS are only mapped to the middle 72 subcarriers of the system bandwidth (actually only mapped to the middle 62 subcarriers, and the edge subcarriers are reserved for guard intervals), that is, 6 RBs in the middle of the system bandwidth ( Resource Block, resource block).
- the PSS is mapped to the last OFDM of slot 0 and slot 10 (Orthogonal Frequency Division) Multiplexing, Orthogonal Frequency Division Multiplexing) symbol, SSS is mapped to the second to last OFDM symbols of slot 0 and slot 10, as shown in Figure la;
- the radio frame in frame structure type 2 ie TDD ( Time Division Duplex, the radio frame in the system, the PSS is mapped to the third OFDM symbol of subframe 1 and subframe 6, and the TDD uplink/downlink configuration with a downlink to uplink switching point period of 5 ms, such as configuration 0.
- subframe 1 and subframe 6 are both special subframes.
- the TDD uplink/downlink configuration is 10ms.
- the special subframe is composed of DwPTS (Downlink Pilot Time Slot), GP (Guard Period), UpPTS (Uplink Pilot Time Slot), that is, a radio frame.
- DwPTS Downlink Pilot Time Slot
- GP Guard Period
- UpPTS Uplink Pilot Time Slot
- the SSS is mapped to the last OFDM symbol of slot 1 and slot 11, as shown in Figure lb.
- the DRS is used to support the signal demodulation in the downlink transmission mode 7 ⁇ 9, and the DRS is only transmitted on the PRB (Physical Resource Block) transmitted in the downlink transmission mode 7 ⁇ 9 to reduce the reference symbol overhead and save energy. And reduce the interference between adjacent cells.
- the mapping position of DRS on antenna ports 7, 8, 11, and 13 is the same, and the mapping of DRS on antenna ports 9, 10, 12, and 14. The position is the same.
- the DRS supports multi-antenna port transmission, the orthogonality between the antenna ports is ensured by the orthogonal sequence shown in Tables 1 and 2.
- the regular CP Cyclic Prefix
- DRS supports transmission on antenna ports 5 and 7 ⁇ 14.
- extended CP DRS does not support transmission on antenna ports 9 ⁇ 14.
- the RE for transmitting the DRS for the same UE cannot transmit the PDSCH on any one of the antenna ports in the same time slot, and cannot transmit any antenna other than the S of the same UE in the same time slot. DRS on the port.
- Table 2 DRS Orthogonal Sequences of Different Antenna Ports Under Extended CP
- the DRS mapped by each antenna port is mapped to the RE (Resource Element) position in a PRB by DRS pattern.
- the DRS pattern for one antenna port is the antenna.
- DRS resource mapping mode on the port among them:
- Figure 2a shows the DRS pattern for antenna port 5 under a conventional CP.
- the small square where R5 is located indicates the RE occupied by the DRS on the antenna port, that is, the RE used to transmit the DRS on the antenna port.
- Figure 2b shows the DRS pattern for antenna port 5 under extended CP. Similarly, the small square where R5 is located represents the RE that the DRS occupies on the antenna port.
- Figure 3a shows the DRS pattern for antenna port 7 and the DRS pattern for antenna port 9 under a conventional CP.
- the left side of the upper row is configured as 1, 2, 6, or 7 for the special subframe, the DRS pattern for the antenna port 7; when the left side of the middle row is the special subframe configured as 3, 4, or 8, for the antenna port 7 DRS pattern;
- the left side of the lower row is all other downlink subframes (also known as regular downlink subframes, which may be regular downlink subframes of the TDD system, or downlink subframes of the FDD system, where the conventional downlink of the TDD system
- the frame is the DRS pattern for the antenna port 7 in the downlink subframe except the special subframe in the TDD system.
- the small square where R7 is located in each DRS pattern indicates that the DRS is on the day.
- On the right side of the upper row when the special subframe is configured as 1, 2, 6, or 7, the DRS pattern for the antenna port 9; when the right side of the middle row is the special subframe configured as 3, 4, or 8, the DRS for the antenna port 9
- the right side of the lower row is the DRS pattern for antenna port 9 in all other downlink subframes; the small square where R9 is located in each DRS pattern indicates the RE occupied by the DRS on the antenna port.
- the DRS pattern for the antenna ports 8, 11, and 13 the DRS pattern for the antenna port 7 shown in the left side of FIG.
- the DRS pattern for antenna port 9 is shown on the right side of Figure 3a (i.e., the DRS pattern of antenna port 9).
- Figure 3b shows the DRS pattern for antenna port 7 under extended CP, where DRS pattern for antenna port 7 is shown in Figure 3b when the special subframe configuration is 1, 2, 3, 5 or 6.
- Figure 3b shows the DRS pattern for antenna port 7 in all other downlink subframes (also known as regular downlink subframes); the small square where R7 is located in each DRS pattern indicates that the DRS is occupied on the antenna port. RE.
- the DRS pattern of the antenna port 8 reference may be made to the DRS pattern for the antenna port 7 shown in Fig. 3b (i.e., the DRS pattern of the same antenna port 7).
- a FDD LTE radio frame In a subframe occupying 4 OFDM symbols using a PDCCH (Physical Downlink Control Channel) of a normal CP, the UE does not receive the PDSCH at the antenna port 5; if there is a PRB in the PRB pair The frequency is overlapped with the REs occupied by the PBCH (Physical Broadcast Channel) or the PSS or the SSS, and the UE does not overlap at the antenna ports 5, 7, 8, 9, 10, 11, 12, 13 or 14 receives the PDSCH of the PRB pair; if the VRB (Virtual Resource Block) resource allocation is used, the UE does not receive the PDSCH at the antenna port 7; if the UE does not receive all the RBs corresponding to the PDSCH, The UE may skip decoding the TB (Transport Block), and the physical layer will inform the upper layer that the TB has not successfully decoded.
- PBCH Physical Broadcast Channel
- PSS Physical Broadcast Channel
- SSS Physical Broadcast Channel
- the UE does not receive the PDSCH at the antenna port 5; if one PRB in the PRB pair is in the same frequency as the resource occupied by the PBCH in the PRB pair If the aliasing occurs in the frame, the UE does not receive the PDSCH of the PRB pair on the antenna port 5; if one PRB in the PRB pair is aliased in the same subframe as the RE occupied by the PSS or the SSS, the UE does not The PDSCH of the PRB pair is received at the antenna port 7, 8, 9, 10, 11, 12, 13 or 14; in the special CP configuration, in the special subframe using configurations 1 and 6, if the VRB resource is used The UE does not receive the PDSCH at the antenna port 5; if the VRB resource allocation is used, the UE does not receive the PDSCH at the antenna port 7; if the UE does not receive all the
- the DRS of the 72 subcarriers in the system carrying the PSS and the SSS cannot be transmitted, and the solution is based on the DRS.
- the modulated PDSCH cannot also be transmitted within these RBs.
- the PDSCH in these RBs can be demodulated by CRS.
- PBCH, PDCCH, PCFICH Demodulation of the downlink channel such as the Physical Control Format Indicator Channel and the PHICH (Physical Hybrid-ARQ Indicator Channel) is also based on the CRS.
- the CRS on the NCT carrier is not used for demodulation of downlink data transmission, and can only be demodulated by DRS.
- the downlink data carried in the multiple downlink channels mentioned above is also It is impossible to transmit normally, thereby reducing the downlink transmission efficiency of the NCT carrier.
- An object of the present invention is to provide a method and an apparatus for transmitting a DRS, so as to solve the problem that a downlink transmission efficiency caused by an RB in which a subcarrier carrying a synchronization signal in an NCT carrier cannot be used for transmitting DRS is low.
- a method for transmitting DRS including:
- the DRS that needs to be transmitted on the antenna port p is mapped to the RE for transmitting the DRS in the downlink subframe; in the same slot position, the downlink subframe is used for transmission.
- the number of the OFDM symbol in which the RE of the DRS is located is different from the number of the OFDM symbol in which the RE for transmitting the synchronization signal in the synchronization signal transmission subframe is located;
- the downlink subframe is transmitted through the antenna port p.
- a method for transmitting DRS including:
- the number of the OFDM symbol is different from the number of the OFDM symbol in which the RE for transmitting the synchronization signal in the synchronization signal transmission subframe is located.
- a DRS transmission device includes:
- a resource mapping module configured to map the DRS that needs to be transmitted on the antenna port p to the RE for transmitting the DRS in the downlink subframe according to the resource mapping manner of the DRS in the antenna port p; in the same slot position, the downlink
- the number of the OFDM symbol in which the RE for transmitting the DRS in the subframe is located is different from the number of the OFDM symbol in which the RE for transmitting the synchronization signal in the synchronization signal transmission subframe is located;
- a data transmission module configured to transmit the downlink subframe by using the antenna port p.
- a DRS transmission device includes:
- a data receiving module configured to receive a downlink subframe by using an antenna port p;
- a downlink reference symbol acquisition module configured to acquire a DRS on an RE for transmitting a DRS in the downlink subframe according to a resource mapping manner of the DRS in the antenna port p; in the same slot position, the downlink subframe is used in the downlink subframe
- the number of the OFDM symbol in which the RE transmitting the DRS is located, and the OFDM symbol in which the RE for transmitting the synchronization signal in the synchronization signal transmission subframe is located The number of the number is different.
- the number of the OFDM symbol in which the RE for transmitting the DRS in the downlink subframe is located in the same slot position, and the RE used to transmit the synchronization signal in the synchronization signal transmission subframe The OFDM symbol number is different, and the mapping resources of the DRS and the synchronization signal in the downlink subframe are not overlapped. Therefore, when the technical solution provided by the embodiment of the present invention is applied to the non-synchronized NCT carrier, the DRS and the downlink data can be simultaneously transmitted in the synchronization signal transmission subframe, thereby improving the downlink transmission efficiency of the asynchronous NCT carrier.
- FIG. 1 is a schematic diagram of a synchronization signal mapping position in a FDD LTE radio frame
- Figure lb is a schematic diagram of the location of the synchronization signal mapping in the TDD LTE radio frame
- 2a is a DRS pattern of a downlink subframe at an antenna port 5 under a conventional CP
- 2b is a DRS pattern of the downlink subframe at the antenna port 5 under the extended CP;
- Figure 3a shows the DRS pattern of the downlink subframe at antenna port 7 and antenna port 9 under a conventional CP
- Figure 3b shows the DRS pattern of the downlink subframe at the antenna port 7 under the extended CP
- 5a is a punctured DRS pattern of the downlink subframe of the FDD system at the antenna port 5 under the conventional CP;
- Figure 5b shows the DRS pattern of the downlink subframe of the FDD system at the antenna port 5 under the extended CP
- Figure 6a shows the DRS pattern of the downlink subframe of the FDD system at antenna ports 7 ⁇ 14 under the conventional CP;
- Figure 6b shows the punctured DRS pattern of the downlink subframe of the FDD system at the antenna port 7 ⁇ 14 under the extended CP;
- 7a is a punctured DRS pattern of a conventional downlink subframe of a TDD system at antenna ports 7 to 14 when a DRS mapping relationship in a punctured OFDM symbol is deleted;
- Figure 7b shows the DRS pattern of the conventional downlink subframe of the TDD system at the antenna port 7 ⁇ 14 when the DRS mapping relationship in the two punctured OFDM symbols is deleted.
- Figure 8a shows the DRS pattern of the TDD system special subframe configuration 3/4/8 at the antenna port 7 ⁇ 14 when deleting the DRS mapping relationship in a punctured OFDM symbol;
- Figure 8b shows the DRS pattern of the TDD system special subframe configuration 3/4/8 at the antenna port 7 ⁇ 14 when the DRS mapping relationship in the two punctured OFDM symbols is deleted.
- Figure 9a shows the DRS pattern of the TDD system special subframe configuration 1/2/6/7 at the antenna port 7 ⁇ 14 when deleting the mapping relationship in a punctured OFDM symbol;
- FIG. 9b is a DRS pattern of the TDD system special subframe configuration 1/2/6/7 at the antenna ports 7 to 14 when the DRS mapping relationship in the two punctured OFDM symbols is deleted;
- Figure 10a shows a new DRS pattern of the downlink subframe at antenna port 5 under a conventional CP;
- Figure 10b shows the new DRS pattern of the downlink subframe at the antenna port 5 under the extended CP
- Figure 11a shows a new DRS pattern of a conventional subframe at antenna ports 7 to 14 under a conventional CP
- Figure l ib is a new DRS pattern with regular sub-frames at antenna ports 7 ⁇ 14 under extended CP;
- Figure 12a shows the first new DRS pattern of the TDD system special subframe configuration 1/2/6/7 at antenna ports 7 ⁇ 14 under conventional CP;
- Figure 12b shows the second new DRS pattern of the TDD system special subframe configuration 1/2/6/7 at antenna ports 7 ⁇ 14 under conventional CP;
- Figure 12c shows the third new DRS pattern of the TDD system special subframe configuration 1/2/6/7 at antenna ports 7 ⁇ 14 under conventional CP;
- Figure 12d shows the special sub-frame configuration of the TDD system 3/4/8 at the antenna port 7 ⁇ 14 under the conventional CP.
- Figure 12e shows the second new DRS pattern of the TDD system special subframe configuration 3/4/8 at antenna ports 7 ⁇ 14 under conventional CP;
- Figure 12f shows the first three new DRS patterns of the TDD system special subframe configuration 3/4/8 at antenna ports 7 ⁇ 14 under conventional CP;
- Figure 12g shows the first new DRS pattern of the TDD system special subframe configuration 1/2/3/5/6 at antenna ports 7 ⁇ 14 under extended CP;
- Figure 12h shows the second new DRS pattern of the TDD system special subframe configuration 1/2/3/5/6 at antenna ports 7 ⁇ 14 under extended CP;
- FIG. 13 is a flowchart of another method according to an embodiment of the present invention.
- FIG. 14 is a schematic structural diagram of a network side device according to an embodiment of the present disclosure.
- FIG. 15 is a schematic structural diagram of a UE side device according to an embodiment of the present disclosure.
- FIG. 16 is a schematic structural diagram of another UE side device according to an embodiment of the present invention.
- the present invention provides a resource mapping manner of a DRS on an antenna port where the transmission is located, and the main idea is as follows: DRS mapping is outside the RE occupied by the synchronization signal. On the RE, the DRS and the synchronization signal are simultaneously transmitted in the same downlink subframe.
- the synchronization signal refers to PSS/SSS o
- Step 100 According to a resource mapping manner of the DRS in the antenna port p, the method needs to be transmitted on the antenna port p.
- the synchronization signal transmission subframe refers to subframe 0 and subframe 5 in the radio frame, and specifically includes: PSS is in slot 0 (ie, the first slot of subframe 0) and slot 10 (ie, The last OFDM symbol of the first slot of subframe 5 is transmitted, and the SSS is transmitted on the second to last OFDM symbols of slot 0 and slot 10;
- the synchronization signal transmission subframe refers to the radio frame Subframe 0 and subframe 5, and subframe 1 and subframe 6, specifically include: PSS in subframe 1 (special subframe) and subframe 6 (may be a special subframe, or a regular subframe, depending on TDD Transmission on the third OFDM symbol of the uplink/downlink configuration, SSS is at the end of slot 1 (ie, the second slot of subframe 0) and slot 1 1 (ie, the second slot of subframe 5) Transmission on one OFDM symbol.
- PSS is in slot 0 (ie, the first slot of subframe 0) and slot 10 (ie, The
- the resource mapping manner of the DRS at the antenna port p may be a DRS pattern defined in the existing LTE-A communication standard, for example, the DRS pattern shown in FIG. 2a to FIG. 3b, or may be newly defined.
- the resource mapping mode of the DRS at the antenna port p If the resource mapping mode of the DRS in the antenna port P is newly defined, it is necessary to satisfy the OFDM symbol number in which the RE for transmitting the DRS is located in the same slot position of the synchronization signal transmission subframe, and the RE for transmitting the synchronization signal.
- the OFDM symbol numbers are different.
- the same time slot position refers to a plurality of time slots (2) time slots included in any one downlink subframe, and the relative position in one downlink subframe may be described as a downlink.
- the slot position is either an odd-numbered slot position in a downlink subframe or an even-numbered slot position in a downlink subframe.
- the synchronization signal is transmitted on the last two OFDM symbols of slot 0 and slot 10 in one radio frame, ie, the previous one (or the first) of the downlink subframes 0 and 5 under the conventional CP.
- OFDM symbols numbered 1 5 and 6 in the slot position of the even number, in the extended CP, in the previous (or first or even numbered) slot position of the downlink subframes 0 and 5.
- Extended OFDM on the OFDM symbols numbered 1 4 and 5.
- Step 1 10 The downlink subframe is transmitted through the antenna port p.
- the downlink data is also transmitted in the downlink subframe.
- the downlink data may be transmitted in the following four manners: (1) downlink data transmission in each time slot of the downlink subframe The downlink data is mapped on the RE other than the RE for transmitting the DRS in the RB; (2) the RE other than the RE for transmitting the DRS in the RB where the downlink data transmission in each slot of the downlink subframe is located, and Synchronous signal transmission sub-frame for transmission The downlink data is mapped on the RE other than the RE having the same RE position of the synchronization signal.
- the downlink data transmission may be performed only for the synchronization signal, or may be the downlink data transmission of each time slot of the downlink subframe regardless of whether the downlink subframe is a synchronization signal transmission subframe.
- the downlink data includes downlink data that is carried in a downlink channel such as a PDSCH, a PBCH, a PDCCH (including an e-PDCCH, that is, an enhanced PDCCH), a PCFICH, and/or a PHICH.
- a downlink channel such as a PDSCH, a PBCH, a PDCCH (including an e-PDCCH, that is, an enhanced PDCCH), a PCFICH, and/or a PHICH.
- the OFDM symbol of the RE for transmitting the DRS in the downlink subframe is The number of the OFDM symbol in which the RE for transmitting other downlink reference symbols in the other downlink reference symbol transmission subframes is different is also different.
- the other downlink reference symbols include one or more combinations of CRS, PRS (Reference Reference Symbol), and CSI-RS (Channel State Information-Reference Signals).
- the downlink data may be mapped by means of mode (3) or mode (4): (3) in each time slot of the downlink subframe, an RE other than the RE for transmitting the DRS in the RB where the downlink data transmission is located, And the other downlink reference is matched with the RE other than the RE for transmitting the other downlink reference symbols in the transmission subframe, and the downlink data is mapped; (4) in the RB where the downlink data transmission is used in each time slot of the downlink subframe An RE other than the RE transmitting the DRS, and an RE other than the REs of the other downlink reference symbol transmission subframes for transmitting other downlink reference symbols, and the synchronization signal transmission sub-frame for transmitting the synchronization signal Downstream data is mapped on REs other than REs with the same RE location.
- the subframe may be transmitted only for other downlink reference symbols, or may be any of the downlink subframes, regardless of whether the downlink subframe is another downlink reference symbol transmission subframe.
- the RE other than the RE for transmitting the DRS in the RB in which the downlink data transmission is located, and the other downlink reference are matched with the REs other than the RE for transmitting the other downlink reference symbols in the transmission subframe, and the downlink data is mapped.
- the subframe may be transmitted for other downlink reference symbols, or the subframe may be transmitted for the synchronization signal, and the downlink subframe may be another downlink reference symbol transmission subframe, and is also a synchronization signal transmission sub-frame.
- the frame may be an RE other than the RE for transmitting the DRS in the RB where the downlink data transmission is located in each of the downlink subframes, regardless of the downlink subframe of the downlink subframe.
- REs other than REs having the same RE position for transmitting other downlink reference symbols in other downlink reference symbol transmission subframes, and REs other than REs having the same RE position for transmitting synchronization signals in the synchronization signal transmission subframe Map downstream data. If the downlink data transmission of the multi-antenna port is supported, further, the DRS does not map the downlink number on the RE for transmitting the DRS indicated by the resource mapping manner on each antenna port. According to.
- the traditional downlink channel that is, the control region in one downlink subframe (the control region occupies the OFDM symbol for different situations)
- the number may be the first 1 ⁇ 2 OFDM symbols of the even time slot, or the first 1 ⁇ 3 OFDM symbols, or the first 1 ⁇ 4 OFDM symbols)
- the downlink data mapping may be: All OFDM symbols in the subframe are mapped, that is, the control region transmission defined on the legacy component carrier can be mapped, that is, the control region is not defined for the working cell; otherwise, the OFDM can only be in the data region in one downlink subframe. Symbols are mapped.
- the method provided by the embodiment of the present invention may be for all downlink subframes, preferably, or may be for a synchronization signal transmission subframe, that is, the downlink subframes in effect of the foregoing method are only synchronization signal transmission subframes. If the above-mentioned downlink subframe is a synchronization signal transmission subframe, the synchronization signal is also mapped to the RE for transmitting the synchronization signal in the above-mentioned downlink subframe. Correspondingly, before performing the foregoing step 100, it may be determined whether the downlink subframe needs to be DRS mapped according to the method provided by the embodiment of the present invention, if necessary, step 100 is performed, otherwise, according to the current Some DRS mapping methods are mapped.
- the RB in which the RE for transmitting the DRS in the downlink subframe is located includes: (1) all the RBs in the RB set in which the downlink data transmission is in the downlink subframe, where the downlink includes the RE for transmitting the DRS
- the RB where the data transmission is located is a first RB set, where the first RB set includes all the RBs of the REs for transmitting the DRS in the downlink available bandwidth, and includes the RE for transmitting the synchronization signal in the synchronization signal transmission subframe.
- the RB number is the same as the RB. That is to say, all the RBs of the REs for transmitting the DRS in the downlink available bandwidth of the current working cell are mapped by using the method provided by the embodiment of the present invention.
- the RB in which the downlink data transmission of the RE for transmitting the DRS is located is a second RB set, and the second RB set includes a combination of RBs of any REs for transmitting the DRS in the downlink available bandwidth. That is, the RB combination in which the REs for transmitting the DRS are located in the downlink available bandwidth is mapped using the method provided by the embodiment of the present invention, even if no synchronization signal and/or other downlink reference are transmitted in the RBs. symbol.
- the RB set in which the downlink data transmission is located in the downlink subframe is an RB set at any position within the downlink available bandwidth; or (2) the RB set in which the downlink data transmission is located in the downlink subframe and the synchronization signal transmission subframe
- the RB with the same RB number of the RE for transmitting the synchronization signal that is to say, only the RBs of the same RBs in which the REs of the synchronization signal are located in the synchronization signal transmission subframe are mapped to the DRS by using the method provided by the embodiment of the present invention, and the other RBs in the downlink available bandwidth can be used.
- Existing mapping methods are possible mapping methods.
- the DRS mapping resource and the synchronization signal mapping resource may be selected from at least one DRS pattern defined by the antenna port p in the existing LET-A communication standard. There are overlapping DRS patterns. Then, the resource mapping manner of the DRS in the antenna port p refers to a DRS resource mapping manner selected from at least one DRS resource mapping manner defined by the antenna port p in the LTE-A Rel-10 system.
- the selected DRS resource mapping manner satisfies: in the same slot position, the number of the OFDM symbol in which the RE for transmitting the DRS is located in the downlink subframe determined by the selected DRS resource mapping manner and the synchronization signal in the synchronization signal transmission subframe are used for transmitting the synchronization signal
- the number of the OFDM symbol in which the RE is located is different.
- the at least one type of DRS resource mapping defined by the antenna port p in the LTE-A Rel-10 system may specifically be the DRS device shown in FIG. 2a to FIG. 3b. details as follows:
- the DRS pattern shown in FIG. 2a can be used.
- the DRS pattern shown in FIG. 2b may be used as the foregoing step 100.
- the resource mapping mode of the DRS in the antenna port p may refer to the DRS resource mapping mode of the antenna port p of the special subframe configuration 3, 4, and 8 in the LTE-A Rel-10 system in the conventional CP.
- the antenna port 12 and/or the antenna port 14 use the DRS pattern shown on the right side of the row in FIG. 3a as the resource mapping manner of the DRS at the antenna port p described in the above step 100.
- the antenna port p supports only the legacy PDCCH transmission of 2 OFDM symbols.
- the resource mapping manner of the above DRS at the antenna port p specifically refers to The DRS resource mapping manner of the antenna port p of the conventional downlink subframe in the LTE-A Rel-10 system in the conventional CP.
- the DRS pattern shown on the left side of the lower row of FIG. 3a is used as the DRS described in the above step 100 at the antenna port p.
- Resource mapping mode; for the antenna port 9 of the antenna port 7 7 ' ⁇ ' ⁇ + 6 and/or the antenna port 10, the DRS pattern shown on the right side of the lower row of FIG. 3a is used as described in the above step 100.
- the DRS pattern defined for the antenna port p in the existing LET-A communication standard can be used.
- the RE corresponding to the conflicting OFDM symbol is not mapped to the DRS.
- the specific implementation of the foregoing step 100 may be: mapping the DRS that needs to be transmitted on the antenna port p to the downlink subframe according to the DRS resource mapping manner defined for the antenna port p in the LTE-A Rel-10 system.
- the RE corresponding to the RE corresponding to the OFDM symbol is used to transmit the DRS.
- the punctured OFDM symbol may be the OFDM symbol number in the OFDM symbol in the DRS mapping manner determined by the DRS resource mapping manner and the RE used to transmit the synchronization signal in the synchronization signal transmission subframe in the same slot position.
- the punctured OFDM symbol may also refer to an OFDM symbol in which the DRS mapping is determined in the DRS resource mapping manner and the RE used to transmit the synchronization signal in the synchronization signal transmission subframe in the same slot position. OFDM symbols numbered the same and numbered adjacent. In the conventional downlink subframe shown on the left in the lower row of FIG.
- the punctured OFDM symbol may refer to the same slot position (that is, even slots), the DRS.
- the pattern determines the last OFDM symbol of the DRS mapping, or the last two OFDM symbols.
- the DRS resource mapping manner defined for the antenna port p in the LTE-A Rel-10 system may specifically be the DRS pattern shown in FIG. 2a to FIG. 3b. details as follows:
- the punctured OFDM symbol specifically refers to the last OFDM symbol of the even-numbered slot of the downlink subframe.
- the punctured OFDM symbol specifically refers to a second to last OFDM symbol of an even slot of the downlink subframe.
- the downlink subframe is a downlink subframe of the FDD system, and the punctured OFDM symbol specifically refers to the downlink subframe.
- the DRS pattern corresponding to the corresponding antenna port in the lower row of FIG. 3a is used as the resource mapping manner of the DRS in the antenna port p described in the foregoing step 100, and the FDD is used for the extended CP.
- the punctured OFDM symbol specifically refers to the downlink subframe.
- the DRS pattern corresponding to the corresponding antenna port in the lower row of FIG. 3a is used as the DRS described in the above step 100.
- DRS 3b is used as the resource mapping manner of the DRS at the antenna port p described in the above step 100.
- the punctured OFDM symbol means that the last OFDM symbol of the odd time slot of the downlink subframe can only support the single port transmission DRS.
- the foregoing downlink subframe is a special subframe of the TDD system using a regular CP
- the punctured OFDM symbol specifically refers to The third OFDM symbol of the even slot of the downlink subframe, or the third and fourth OFDM symbols of the even slot determined by the DRS resource mapping manner.
- the DRS pattern corresponding to the corresponding antenna port in FIG. 3a is used as the resource mapping manner of the DRS in the antenna port p described in the foregoing step 100, which is special for the TDD system.
- the subframe configuration 1, 2, 6, and 7 uses the DRS pattern corresponding to the corresponding antenna port in the row of FIG. 3a as the resource mapping manner of the DRS in the antenna port p described in the above step 100.
- only DRS is transmitted on 1 to 4 antenna ports.
- the DRS mapping relationship in the punctured OFDM symbol in each of the DRS patterns is deleted to obtain a new DRS.
- the details are shown in Figures 5a ⁇ 9b.
- the trellis in each figure is the RE of the punctured OFDM symbol that deletes the DRS mapping relationship.
- a new DRS pattern can be redefined based on the DRS pattern defined for the antenna port p in the existing LET-A communication standard. Then, the resource mapping manner of the DRS in the antenna port p is performed by using the RE location for transmitting the DRS in the downlink subframe determined by the DRS resource mapping manner defined for the antenna port p in the LTE-A Rel-10 system. Based on the translation of the OFDM symbol, the obtained DRS resource mapping manner.
- the resource mapping manner of the DRS at the antenna port p may also refer to: an RE for transmitting DRS in a downlink subframe determined by a DRS resource mapping manner defined for the antenna port p in the LTE-A Rel-10 system.
- the position is based on OFDM symbol-based translation, and subcarrier-based translation is performed to obtain a DRS resource mapping manner.
- the RE on at least one OFDM symbol can be translated. If the REs on multiple OFDM symbols are translated, the number of OFDM symbols translated by the REs on different OFDM symbols in the time domain may be the same or different, and the number of subcarriers in which the REs on different OFDM symbols are translated in the frequency domain may be Same or different.
- the number of OFDM symbols translated in the time domain may be the same or different; the number of subcarriers translated in the frequency domain may be the same or different.
- the number of OFDM symbols translated in the frequency domain is the same, and the number of subcarriers translated in the frequency domain is the same.
- the DRS pattern shown on the left side of FIG. 11a is a graph.
- the DRS pattern shown on the left side of row 3a, at this time, the corresponding antenna port supports only 2 symbols of legacy PDCCH transmission. Or, for each column in the DRS pattern shown on the left side of the lower row in FIG.
- the corresponding antenna port supports only one symbol legacy. PDCCH transmission.
- the DRS pattern is the DRS pattern shown on the right side of the row in Figure 3a.
- the corresponding antenna port supports only 2 symbols of legacy PDCCH transmission. Or, for each column in the DRS pattern shown on the right side of the lower row of FIG.
- the corresponding antenna port supports only one symbol legacy. PDCCH transmission.
- the downlink subframe is a regular downlink subframe using a conventional CP: it can also support different DRS patterns for different downlink modes of the FDD system downlink subframe and the TDD system regular downlink subframe.
- the obtained DRS pattern is used as the DRS pattern of the downlink subframe of the FDD system under the normal CP.
- the DRS pattern is used as the DRS pattern of the regular downlink subframe of the TDD system under the normal CP.
- antenna ports 7, 8 support only one symbol legacy PDCCH transmission, resulting in a DRS pattern as shown in Figure 1 lb.
- the downlink subframe is a regular downlink subframe using the extended CP
- the DRS pattern of the system downlink subframe under the extended CP For the normal downlink subframe of the TDD system, only in the DRS pattern shown on the lower side of Figure 3b.
- the REs of the DRS pattern for each of the DRS patterns can be shifted to occupy the 4th, 6th, 7th, and 9th OFDM symbols.
- the downlink subframe is a TDD system special subframe configuration 9 using a regular CP
- the same DRS as the TDD system special subframe configuration 3/4/8 using the conventional CP can be used.
- a pattern such as the pattern in Figure 12b or Figure 12c, or the same DRS pattern as the TDD system special subframe configuration 1/2/6/7 using a conventional CP, such as the pattern in Figure 12e or Figure 12f;
- the special subframe configuration 9 includes only 6 OFDM symbols as downlink transmissions under the normal CP. Therefore, when the above DRS pattern is used, only the DRS REs included in the first 6 OFDM symbols are valid, and the other DRS REs are truncated.
- the TDD system special subframe configuration using the extended CP can be used 1/2/3/5/ 6 same DRS pattern, such as the pattern in FIG. 12g or FIG. 12h; since the special subframe configuration 7 includes only 5 OFDM symbols as downlink transmission under the extended CP, when using the above DRS pattern, only the first 5 OFDM symbols are used.
- the DRS RE contained in it is valid, and the other DRS REs are truncated.
- the previous three OFDM symbols may be used in any of the above conventional CPs including the DRS RE.
- the DRS pattern for example, the pattern in FIG. 12c or FIG. 12; since the special subframe configuration 0/5 includes only 3 OFDM symbols as downlink transmissions under the normal CP, when the above DRS pattern is used, only the first 3 OFDM symbols are used.
- the included DRS RE is valid and the other DRS REs are truncated.
- the foregoing three OFDM symbols may be included in any of the above extended CPs including the DRS RE.
- DRS pattern for example, the pattern in Figure 12h; Since the special subframe configuration 0/4 includes only 3 OFDM symbols as the downlink transmission under the extended CP, when the above DRS pattern is used, only the DRS included in the first 3 OFDM symbols RE is valid and other DRS REs are truncated.
- the antenna ports 7, 8, 11 and 13 can use the same DRS pattern, and the antenna ports 9, 10, 12, 14 can use the same DRS pattern.
- the antenna port that transmits the DRS on the same resource is distinguished by the orthogonal sequence.
- the above The embodiments of the present invention provide only a combination of preferred antenna port multiplexing resources, and do not exclude other combinations of antenna port multiplexing resources.
- Step 200 Receive a downlink subframe by using an antenna port p.
- Step 210 Obtain a DRS on an RE for transmitting a DRS in the downlink subframe according to a resource mapping manner of the DRS in the antenna port p.
- an OFDM in which the RE for transmitting the DRS in the downlink subframe is located The number of the symbol is different from the number of the OFDM symbol in which the RE for transmitting the synchronization signal in the synchronization signal transmission subframe is located.
- the description of the resource mapping manner of the DRS in the antenna port p, and the description of the RE for transmitting the DRS in the downlink subframe are the same as those described in the foregoing e B side method embodiment, where Let me repeat.
- the UE side may obtain the DRS according to the configuration of the high layer signaling on the eNB side or the resource mapping manner corresponding to the eNB side according to the agreement with the eNB.
- the specific implementation manner of the foregoing step 210 may be: according to the LTE-A Rel-10 system, the antenna port p is defined according to the resource mapping manner of the DRS in the antenna port p described in the second preferred implementation manner.
- the DRS resource mapping mode, the DRSo is acquired on the RE for transmitting the DRS other than the RE corresponding to the OFDM symbol in the downlink subframe, and the punctured OFDM symbol refers to the DRS resource mapping manner in the same slot position.
- the OFDM symbol of the determined DRS mapping In the OFDM symbol of the determined DRS mapping, the OFDM symbol of the same OFDM symbol as the RE for transmitting the synchronization signal in the synchronization signal transmission subframe, or the punctured OFDM symbol means that, in the same slot position,
- the OFDM symbol of the DRS mapping determined by the DRS resource mapping manner is the same as the OFDM symbol of the OFDM symbol in which the RE for transmitting the synchronization signal in the synchronization signal transmission subframe is located and the OFDM symbol adjacent to the number.
- the downlink subframe is a synchronization signal transmission subframe.
- the following operations may be further included: detecting the synchronization signal to obtain downlink synchronization.
- the embodiment of the present invention further provides a DRS transmission device, where the device is a network side device, and may be an eNB or a device disposed on an eNB. Its structure is shown in Figure 14, the specific implementation structure is as follows:
- the resource mapping module 1001 is configured to map the DRS that needs to be transmitted on the antenna port p to the RE for transmitting the DRS in the downlink subframe according to the resource mapping manner of the DRS in the antenna port p; in the same slot position, the downlink
- the number of the OFDM symbol in which the RE for transmitting the DRS in the subframe is located is different from the number of the OFDM symbol in which the RE for transmitting the synchronization signal in the synchronization signal transmission subframe is located.
- the data transmission module 1002 is configured to transmit the downlink subframe by using the antenna port p.
- the description of the resource mapping manner of the DRS in the antenna port p, and the description of the RE for transmitting the DRS in the downlink subframe are the same as those described in the foregoing eNB side method embodiment, where Let me repeat.
- the resource mapping module 1001 is specifically configured to: according to the DRS defined in the LTE-A Rel-10 system for the antenna port p, when the resource mapping manner of the DRS in the antenna port p is used in the second preferred implementation manner.
- the DRS that needs to be transmitted on the antenna port p is mapped to the corresponding punctured OFDM symbol in the downlink subframe.
- the punctured OFDM symbol means that, in the same slot position, the OFDM symbol of the DRS mapping determined by the DRS resource mapping manner is the same as the OFDM symbol of the RE for transmitting the synchronization signal in the synchronization signal transmission subframe. OFDM symbol.
- the punctured OFDM symbol refers to the number of the OFDM symbol in the OFDM symbol in the DRS resource mapping manner determined by the DRS resource mapping manner and the RE used to transmit the synchronization signal in the synchronization signal transmission subframe in the same slot position.
- the resource mapping module 1001 is further configured to: map the synchronization signal to the downlink subframe for transmitting the synchronization signal RE.
- the embodiment of the present invention further provides a DRS transmission device, where the device is a UE side device, and may be a UE, or may be a device disposed on the UE.
- the implementation structure is shown in Figure 16. The specific implementation structure is as follows:
- a data receiving module 2001 configured to receive a downlink subframe by using an antenna port p;
- the downlink reference symbol acquisition module 2002 is configured to obtain the DRS on the RE for transmitting the DRS in the downlink subframe according to the resource mapping manner of the DRS in the antenna port p. In the same slot position, the number of the OFDM symbol in which the RE for transmitting the DRS in the downlink subframe is located is different from the number of the OFDM symbol in which the RE for transmitting the synchronization signal in the synchronization signal transmission subframe is located.
- the description of the resource mapping manner of the DRS in the antenna port p, and the description of the RE for transmitting the DRS in the downlink subframe are the same as those described in the foregoing e B side method embodiment, where No longer.
- the downlink reference symbol acquisition module 2002 is specifically configured to: according to the antenna port p in the LTE-A Rel-10 system, when the resource mapping manner of the DRS in the antenna port p is used in the second preferred implementation manner.
- the defined DRS resource mapping manner acquires the DRS on the RE for transmitting the DRS other than the RE corresponding to the OFDM symbol in the downlink subframe.
- the punctured OFDM symbol means that, in the same slot position, the OFDM symbol of the DRS mapping determined by the DRS resource mapping manner is the same as the OFDM symbol of the RE for transmitting the synchronization signal in the synchronization signal transmission subframe.
- the OFDM symbol is the OFDM symbol in the DRS mapping manner determined by the DRS resource mapping manner in the same slot position, and the OFDM in the synchronization signal transmission subframe for transmitting the synchronization signal. Symbols are numbered the same and numbered adjacent to the OFDM symbol.
- the UE side device may further include a synchronization signal detecting module 2003, configured to detect a synchronization signal before the data receiving module 2001 receives the downlink subframe through the antenna port p, to obtain downlink synchronization.
- a synchronization signal detecting module 2003 configured to detect a synchronization signal before the data receiving module 2001 receives the downlink subframe through the antenna port p, to obtain downlink synchronization.
- the number of the OFDM symbol in which the RE for transmitting the DRS in the downlink subframe is located in the same slot position, and the RE used to transmit the synchronization signal in the synchronization signal transmission subframe The OFDM symbol number is different, and the mapping resources of the DRS and the synchronization signal in the downlink subframe are not overlapped. Therefore, when the technical solution provided by the embodiment of the present invention is applied to the non-synchronized NCT carrier, the DRS and the downlink data can be simultaneously transmitted in the synchronization signal transmission subframe, and the downlink transmission efficiency of the asynchronous NCT carrier is improved.
- the DRS can be transmitted in the synchronization signal transmission subframe in the embodiment of the present invention
- the downlink data can be normally received based on the DRS.
- embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware.
- the present invention is in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.
- the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
- the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
- These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
- the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Disclosed are a DRS transmission method and device. The method comprises: in accordance with a resource mapping manner of a DRS on an antenna port p, mapping the DRS needing to be transmitted on the antenna port p into a downlink subframe for being used on an RE which transmits the DRS; in the same time slot position, the serial number of an OFDM symbol where the RE used for transmitting the DRS in the downlink subframe is located being different from the serial number of an OFDM symbol where the RE used for transmitting a synchronization signal in a synchronization signal transmission subframe is located; and transmitting the downlink subframe through the antenna port p. Because it is ensured that the DRS in the downlink subframe and mapping resources of the synchronization signal do not overlap, regarding a nonsynchronous NCT carrier, the DRS and downlink data can be simultaneously transmitted in the synchronization signal transmission subframe, thereby improving the downlink transmission efficiency of the nonsynchronous NCT carrier. Because the DRS can be transmitted in the synchronization signal transmission subframe, the downlink data can be normally received based on same.
Description
一种 DRS的传输方法及装置 本申请要求在 2012年 04月 12日提交中国专利局、 申请号为 201210107727.0、发明名称为 "一种 DRS的传输方法及装置"、 以及在 2013年 02月 19日提交中国专利局、 申请号为 201310053685.1、 发明名称为"一种 DRS的传输方法及装置"的中国专利申请的优先权, 其全 部内容通过引用结合在本申请中。 技术领域 本发明涉及通信技术领域, 尤其涉及一种 DRS的传输方法及装置。 背景技术 LTE-A CA介绍: Method and device for transmitting DRS The present application claims to be submitted to the Chinese Patent Office on April 12, 2012, the application number is 201210107727.0, the invention name is "a transmission method and device for DRS", and on February 19, 2013 Priority is given to Chinese Patent Application No. 201310053685.1, the entire disclosure of which is hereby incorporated by reference in its entirety in its entirety in its entirety in the the the the the the the the the The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for transmitting a DRS. Background Art Introduction of LTE-A CA:
在 LTE-A ( Long Term Evolution - Advanced, 长期演进增强) ***中, ***的峰值速 率比 LTE ( Long Term Evolution, 长期演进) ***有巨大的提高, 要求达到下行 lGbps, 上 行 500Mbps。如果只使用一个最大带宽为 20MHz的载波是无法达到峰值速率要求的。 因此, LTE-A***需要扩展 UE ( User Equipment, 用户设备, 也称终端)可以使用的带宽, 由此 引入了 CA ( Carrier Aggregation, 载波聚合)技术, 即将同一个 e B (基站)下的多个连续 或不连续的载波聚合在一起, 同时为 UE服务, 以提供所需的速率。 这些聚合在一起的载波 又称为一个 CC ( Component Carrier, 成员载波) 。 每个小区都可以是一个成员载波, 不同 eNB下的小区 (成员载波) 不能聚合。 为了保证 LTE***中的 UE能在每一个聚合的载波工 作, 每一个载波最大不超过 20MHz。 In the LTE-A (Long Term Evolution - Advanced) system, the peak rate of the system is greatly improved compared to the LTE (Long Term Evolution) system, which requires downlink lGbps and uplink 500 Mbps. If only one carrier with a maximum bandwidth of 20MHz is used, the peak rate requirement cannot be reached. Therefore, the LTE-A system needs to extend the bandwidth that can be used by the user equipment (user equipment, also called the terminal), thereby introducing the CA (Carrier Aggregation) technology, which is more than the same e B (base station). A continuous or non-contiguous carrier is aggregated while serving the UE to provide the required rate. These aggregated carriers are also called a CC (Component Carrier). Each cell can be a member carrier, and cells (member carriers) under different eNBs cannot be aggregated. In order to ensure that UEs in the LTE system can work on each aggregated carrier, each carrier does not exceed 20 MHz at the maximum.
LTE-A中的新载波类型介绍: Introduction of new carrier types in LTE-A:
为了进一步提高***资源利用率, LTE- A Rel- 1 1确定对于载波聚合*** I入新的载波 类型(Additional Carrier Type , ACT或 New Carrier Type, NCT ) , 以增强***频语利用率、 更好的支持异构网络、 降低功耗。对于 NCT的工作方案正在讨论中, 目前确定的结论包括: ( 1 )压缩或消除现有的控制信令和 /或 CRS ( Cell-specific Reference Signals, 小区专属 参考符号), 目前仅支持 NCT上以 5ms ( Millisecond, 毫秒) 为周期在单天线端口 ( p=0 ) 传输 CRS , 且该 CRS传输不用于下行数据传输的解调, 而用于 NCT载波上的相关测量过程; NCT上的下行数据传输需要考虑基于 DRS ( Downlink UE-specific Reference Signals, 下行 UE专用参考符号)进行解调。 In order to further improve system resource utilization, LTE-A Rel-1 determines to add a new carrier type (ACT or Carrier Type, ACT or New Carrier Type, NCT) to the carrier aggregation system to enhance system frequency utilization and better. Support heterogeneous networks and reduce power consumption. The working scheme for NCT is under discussion. The conclusions currently determined include: (1) Compressing or eliminating existing control signaling and/or CRS (Cell-specific Reference Signals), currently only supported on NCT 5ms (Millisecond, millisecond) for transmitting CRS on a single antenna port (p=0), and the CRS transmission is not used for demodulation of downlink data transmission, but for related measurement process on NCT carrier; downlink data transmission on NCT It is necessary to consider demodulation based on DRS (Downlink UE-specific Reference Signals).
( 2 ) 与一个后向兼容载波联合工作, 在 Rel-1 1***中, 暂不支持 NCT载波独立工作。 ( 3 ) 支持两种工作场景, 其一是 NCT载波为同步载波的场景, 即从接收端的角度来
看 NCT载波与传统载波在时域和频域都是同步的, UE不需要对 NCT载波进行单独的时频同 步处理。 其二是新类型的载波为非同步载波的场景, 即从接收端的角度来看 NCT载波与传 统载波在时域和频域上存在一定的偏差, UE需要对 NCT载波进行单独的时频同步处理, 因 此可能需要保留 Rel-8中的 PSS( Primary Synchronized Signal,主同步信号) SSS( Secondary Synchronization Signal, 辅同步信号)传输。 (2) Working in conjunction with a backward compatible carrier. In the Rel-1 1 system, the NCT carrier independent operation is temporarily not supported. (3) Support two working scenarios, one of which is that the NCT carrier is a synchronous carrier, that is, from the perspective of the receiving end. It can be seen that the NCT carrier and the legacy carrier are both synchronized in the time domain and the frequency domain, and the UE does not need to perform separate time-frequency synchronization processing on the NCT carrier. The second scenario is that the new type of carrier is a non-synchronous carrier. That is, from the perspective of the receiving end, there is a certain deviation between the NCT carrier and the legacy carrier in the time domain and the frequency domain. The UE needs to perform separate time-frequency synchronization processing on the NCT carrier. Therefore, it is necessary to reserve the PSS (Primary Synchronization Signal) SSS (Secondary Synchronization Signal) transmission in Rel-8.
LTE***中的同步信号介绍: Introduction to synchronization signals in LTE systems:
PSS共有三个长度为 62的二进制序列,每 5ms传输一次, 一个无线帧中前后两个半帧所 使用的序列相同, 因此通过 PSS可以获得 5ms定时。 SSS是由两个长度为 31的二进制序列交 织后合并而成的, 并由 PSS指示的加扰序列进行加扰。 这两个长度为 31的二进制序列的合 并方式在前半帧和子后半帧不同, 因此通过 SSS可以获得 10ms定时, 即确定无线帧的定时 起始位置。 The PSS has three binary sequences of length 62, which are transmitted every 5ms. The sequences used in the first two frames of a radio frame are the same, so 5ms timing can be obtained by PSS. SSS is a combination of two binary sequences of length 31, which are combined and scrambled by the scrambling sequence indicated by PSS. The combination of the two binary sequences of length 31 is different in the first half frame and the second half frame, so that the 10 ms timing can be obtained by SSS, that is, the timing start position of the radio frame is determined.
在频域, PSS和 SSS只映射到***带宽的中间 72个子载波上 (实际仅映射到中间的 62 个子载波上, 边缘的子载波预留作保护间隔), 即***带宽中间的 6个 RB ( Resource Block, 资源块)上。 在时域, 对于帧结构类型 1中的无线帧, 即 FDD ( Frequency Division Duplex, 频分双工) ***中的无线帧, PSS映射到时隙 0和时隙 10的最后一个 OFDM ( Orthogonal Frequency Division Multiplexing, 正交频分复用 )符号上, SSS映射到时隙 0和时隙 10的倒 数第二个 OFDM符号上,如图 la所示;对于帧结构类型 2中的无线帧,即 TDD ( Time Division Duplex, 时分双工) ***中的无线帧, PSS映射到子帧 1和子帧 6的第三个 OFDM符号上, 对于下行到上行切换点周期为 5ms的 TDD上 /下行配置, 如配置 0/1/2/6 , 子帧 1和子帧 6都为 特殊子帧, 对于下行到上行切换点周期为 10ms的 TDD上 /下行配置, 如配置 3/4/5 , 仅子帧 1 为特殊子帧, 特殊子帧由 DwPTS ( Downlink Pilot Time Slot, 下行导频时隙)、 GP ( Guard Period, 保护时间) 、 UpPTS ( Uplink Pilot Time Slot, 上行导频时隙) 3部分构成, 即一个 无线帧中 PSS至少映射在一个 DwPTS的第三个 OFDM符号上, SSS映射到时隙 1和时隙 11的 最后一个 OFDM符号上, 如图 lb所示。 In the frequency domain, PSS and SSS are only mapped to the middle 72 subcarriers of the system bandwidth (actually only mapped to the middle 62 subcarriers, and the edge subcarriers are reserved for guard intervals), that is, 6 RBs in the middle of the system bandwidth ( Resource Block, resource block). In the time domain, for a radio frame in frame structure type 1, that is, a radio frame in an FDD (Frequency Division Duplex) system, the PSS is mapped to the last OFDM of slot 0 and slot 10 (Orthogonal Frequency Division) Multiplexing, Orthogonal Frequency Division Multiplexing) symbol, SSS is mapped to the second to last OFDM symbols of slot 0 and slot 10, as shown in Figure la; for the radio frame in frame structure type 2, ie TDD ( Time Division Duplex, the radio frame in the system, the PSS is mapped to the third OFDM symbol of subframe 1 and subframe 6, and the TDD uplink/downlink configuration with a downlink to uplink switching point period of 5 ms, such as configuration 0. /1/2/6, subframe 1 and subframe 6 are both special subframes. For the downlink to uplink switching point period, the TDD uplink/downlink configuration is 10ms. For example, if the configuration is 3/4/5, only subframe 1 is special. The frame, the special subframe is composed of DwPTS (Downlink Pilot Time Slot), GP (Guard Period), UpPTS (Uplink Pilot Time Slot), that is, a radio frame. At least PSS Shot on the third OFDM symbol of a DwPTS, the SSS is mapped to the last OFDM symbol of slot 1 and slot 11, as shown in Figure lb.
LTE-A***中的 DRS介绍: Introduction to DRS in LTE-A system:
LTE-A***中定义了 9种下行传输模式。 DRS用于支持下行传输模式 7~9的信号解调, 且 DRS仅在釆用下行传输模式 7~9传输的 PRB ( Physical Resource Block, 物理资源块 )上发 送, 以降低参考符号开销、 节省能量、 减少相邻小区间的千扰。 同时, DRS可以支持 1~8 个天线端口传输。 如果 DRS支持单天线端口传输, 则分别配置在天线端口 P = 5,或天线端口 P = 7,或天线端口 P = 8。 如果 DRS支持多天线端口传输, 则用于传输 DRS的天线端口集合 可以是^? = 7, '," + 6。 其中 "为 PDSCH ( Physical Downlink Shared Channel, 物理下行共享 信道)传输的层(Layer )数。 Nine downlink transmission modes are defined in the LTE-A system. The DRS is used to support the signal demodulation in the downlink transmission mode 7~9, and the DRS is only transmitted on the PRB (Physical Resource Block) transmitted in the downlink transmission mode 7~9 to reduce the reference symbol overhead and save energy. And reduce the interference between adjacent cells. At the same time, DRS can support 1~8 antenna port transmissions. If the DRS supports single-antenna port transmission, configure it at antenna port P = 5 , or antenna port P = 7 , or antenna port P = 8 . If the DRS supports multi-antenna port transmission, the antenna port set used for transmitting the DRS may be ^ ? = 7 , '," + 6 where "the layer for the PDSCH (Physical Downlink Shared Channel) transmission (Layer) )number.
DRS在天线端口 7、 8、 11、 13的映射位置相同, DRS在天线端口 9、 10、 12、 14的映射
位置相同, 当 DRS支持多天线端口传输时, 通过表 1和表 2所示的正交序列来保证天线端口 之间的正交性。 常规 CP ( Cyclic Prefix, 循环前缀)下, DRS支持在天线端口 5、 7~14传输。 扩展 CP下, DRS不支持在天线端口 9~14传输。 The mapping position of DRS on antenna ports 7, 8, 11, and 13 is the same, and the mapping of DRS on antenna ports 9, 10, 12, and 14. The position is the same. When the DRS supports multi-antenna port transmission, the orthogonality between the antenna ports is ensured by the orthogonal sequence shown in Tables 1 and 2. Under the regular CP (Cyclic Prefix), DRS supports transmission on antenna ports 5 and 7~14. Under extended CP, DRS does not support transmission on antenna ports 9~14.
在天线端口集合 S中,用于传输针对同一个 UE的 DRS的 RE, 不能再传输同一个时隙任 意一个天线端口上的 PDSCH,不能再传输同一个时隙同一个 UE的 S以外的任意天线端口上 DRS。 其中, ^ = {7,8,1 1,13} 或者 S = {9,10,12,14}。 In the antenna port set S, the RE for transmitting the DRS for the same UE cannot transmit the PDSCH on any one of the antenna ports in the same time slot, and cannot transmit any antenna other than the S of the same UE in the same time slot. DRS on the port. Where ^ = {7,8,1 1,13} or S = {9,10,12,14}.
表 1 : 常规 CP下, 不同天线端口的 DRS正交序列 Table 1: DRS Orthogonal Sequences for Different Antenna Ports Under Conventional CP
表 2: 扩展 CP下, 不同天线端口的 DRS正交序列
各天线端口传输的 DRS映射到在一个 PRB中的 RE ( Resource Element, 资源单元)位置 用 DRS pattern (图样)表示, 则如图 2a~3b所示, 针对一个天线端口的 DRS pattern即为该天 线端口上的 DRS资源映射方式。 其中: Table 2: DRS Orthogonal Sequences of Different Antenna Ports Under Extended CP The DRS mapped by each antenna port is mapped to the RE (Resource Element) position in a PRB by DRS pattern. As shown in Figures 2a to 3b, the DRS pattern for one antenna port is the antenna. DRS resource mapping mode on the port. among them:
图 2a所示的是, 常规 CP下, 针对天线端口 5的 DRS pattern。 其中, R5所在的小方块表 示 DRS在该天线端口上占用的 RE, 即该天线端口上用于传输 DRS的 RE。 Figure 2a shows the DRS pattern for antenna port 5 under a conventional CP. The small square where R5 is located indicates the RE occupied by the DRS on the antenna port, that is, the RE used to transmit the DRS on the antenna port.
图 2b所示的是, 扩展 CP下, 针对天线端口 5的 DRS pattern。 同样的, R5所在的小方块 表示 DRS在该天线端口上占用的 RE。 Figure 2b shows the DRS pattern for antenna port 5 under extended CP. Similarly, the small square where R5 is located represents the RE that the DRS occupies on the antenna port.
图 3a所示的是, 常规 CP下, 针对天线端口 7的 DRS pattern和针对天线端口 9的 DRS pattern。 其中, 上排左侧为特殊子帧配置为 1、 2、 6或 7时, 针对天线端口 7的 DRS pattern; 中排左侧为特殊子帧配置为 3、 4或 8时, 针对天线端口 7的 DRS pattern; 下排左侧为所有其 他下行子帧 (又称为常规下行子帧, 可以是 TDD***的常规下行子帧, 也可以是 FDD*** 的下行子帧, 其中 TDD***的常规下行子帧即为 TDD***中除了特殊子帧以外的下行子 帧) 中, 针对天线端口 7的 DRS pattern; 各 DRS pattern中 R7所在的小方块表示 DRS在该天
线端口上占用的 RE。 上排右侧为特殊子帧配置为 1、 2、 6或 7时, 针对天线端口 9的 DRS pattern; 中排右侧为特殊子帧配置为 3、 4或 8时, 针对天线端口 9的 DRS pattern; 下排右侧 为所有其他下行子帧中, 针对天线端口 9的 DRS pattern; 各 DRS pattern中 R9所在的小方块 表示 DRS在该天线端口上占用的 RE。 针对天线端口 8、 11和 13的 DRS pattern可以参照图 3a 左侧所示针对天线端口 7的 DRS pattern (即同天线端口 7的 DRS pattern ) , 针对天线端口 10、 12和 14的 DRS pattern可以参照图 3a右侧所示针对天线端口 9的 DRS pattern (即同天线端口 9 的 DRS pattern ) 。 Figure 3a shows the DRS pattern for antenna port 7 and the DRS pattern for antenna port 9 under a conventional CP. Wherein, when the left side of the upper row is configured as 1, 2, 6, or 7 for the special subframe, the DRS pattern for the antenna port 7; when the left side of the middle row is the special subframe configured as 3, 4, or 8, for the antenna port 7 DRS pattern; The left side of the lower row is all other downlink subframes (also known as regular downlink subframes, which may be regular downlink subframes of the TDD system, or downlink subframes of the FDD system, where the conventional downlink of the TDD system The frame is the DRS pattern for the antenna port 7 in the downlink subframe except the special subframe in the TDD system. The small square where R7 is located in each DRS pattern indicates that the DRS is on the day. The RE occupied on the line port. On the right side of the upper row, when the special subframe is configured as 1, 2, 6, or 7, the DRS pattern for the antenna port 9; when the right side of the middle row is the special subframe configured as 3, 4, or 8, the DRS for the antenna port 9 The right side of the lower row is the DRS pattern for antenna port 9 in all other downlink subframes; the small square where R9 is located in each DRS pattern indicates the RE occupied by the DRS on the antenna port. For the DRS pattern of the antenna ports 8, 11, and 13, the DRS pattern for the antenna port 7 shown in the left side of FIG. 3a (ie, the DRS pattern of the same antenna port 7) can be referred to, and the DRS patterns for the antenna ports 10, 12, and 14 can be referred to. The DRS pattern for antenna port 9 is shown on the right side of Figure 3a (i.e., the DRS pattern of antenna port 9).
图 3b所示的是, 扩展 CP下, 针对天线端口 7的 DRS pattern, 其中图 3b上所示的是特殊 子帧配置为 1、 2、 3、 5或 6时, 针对天线端口 7的 DRS pattern; 图 3b下所示的是所有其他下 行子帧 (又称为常规下行子帧) 中, 针对天线端口 7的 DRS pattern; 各 DRS pattern中 R7所 在的小方块表示 DRS在该天线端口上占用的 RE。 针对天线端口 8的 DRS pattern可以参照图 3b所示的针对天线端口 7的 DRS pattern (即同天线端口 7的 DRS pattern ) 。 Figure 3b shows the DRS pattern for antenna port 7 under extended CP, where DRS pattern for antenna port 7 is shown in Figure 3b when the special subframe configuration is 1, 2, 3, 5 or 6. Figure 3b shows the DRS pattern for antenna port 7 in all other downlink subframes (also known as regular downlink subframes); the small square where R7 is located in each DRS pattern indicates that the DRS is occupied on the antenna port. RE. For the DRS pattern of the antenna port 8, reference may be made to the DRS pattern for the antenna port 7 shown in Fig. 3b (i.e., the DRS pattern of the same antenna port 7).
LTE-A***的下行接收方式: Downlink receiving mode of LTE-A system:
对于 FDD LTE无线帧: 在使用常规 CP的 PDCCH ( Physical Downlink Control Channel, 物理下行控制信道)占用 4个 OFDM符号的子帧中, UE不会在天线端口 5接收 PDSCH; 如果 PRB对中有一个 PRB在频率上和 PBCH ( Physical Broadcast Channel, 物理广播信道)或者 PSS或者 SSS占用的 RE在同一个子帧中发生混叠, UE不会在天线端口 5,7,8 , 9, 10, 11, 12, 13 或 14接收该 PRB对承载的 PDSCH; 如果釆用 VRB ( Virtual Resource Block, 离散虚拟物理 资源块) 资源分配, UE不会在天线端口 7接收 PDSCH; 如果 UE没有收到 PDSCH对应的所 有 RB , UE可能会跳过对该 TB ( Transport Block, 传输块)的译码, 且物理层会通知高层该 TB没有成功译码。 For a FDD LTE radio frame: In a subframe occupying 4 OFDM symbols using a PDCCH (Physical Downlink Control Channel) of a normal CP, the UE does not receive the PDSCH at the antenna port 5; if there is a PRB in the PRB pair The frequency is overlapped with the REs occupied by the PBCH (Physical Broadcast Channel) or the PSS or the SSS, and the UE does not overlap at the antenna ports 5, 7, 8, 9, 10, 11, 12, 13 or 14 receives the PDSCH of the PRB pair; if the VRB (Virtual Resource Block) resource allocation is used, the UE does not receive the PDSCH at the antenna port 7; if the UE does not receive all the RBs corresponding to the PDSCH, The UE may skip decoding the TB (Transport Block), and the physical layer will inform the upper layer that the TB has not successfully decoded.
对于 TDD LTE无线帧:在使用常规 CP的 PDCCH占用 4个 OFDM符号的子帧中, UE不会 在天线端口 5接收 PDSCH; 如果 PRB对中有一个 PRB在频率上和 PBCH占用的资源在同一个 子帧中发生混叠, UE不会在天线端口 5接收这该 PRB对承载的 PDSCH; 如果 PRB对中有一 个 PRB在频率上和 PSS或 SSS占用的 RE在同一个子帧中发生混叠, UE不会在天线端口 7,8,9, 10, 11, 12, 13或 14接收该 PRB对承载的 PDSCH; 在常规 CP配置下,在使用配置 1和 6的特 殊子帧中, 如果釆用 VRB资源分配, UE不会在天线端口 5接收 PDSCH; 如果釆用 VRB资源 分配, UE不会在天线端口 7接收 PDSCH; 如果 UE没有收到 PDSCH对应的所有 RB , UE可能 会跳过对该 TB的译码, 且物理层会通知高层该 TB没有成功译码。 For a TDD LTE radio frame: in a subframe in which a PDCCH of a regular CP occupies 4 OFDM symbols, the UE does not receive the PDSCH at the antenna port 5; if one PRB in the PRB pair is in the same frequency as the resource occupied by the PBCH in the PRB pair If the aliasing occurs in the frame, the UE does not receive the PDSCH of the PRB pair on the antenna port 5; if one PRB in the PRB pair is aliased in the same subframe as the RE occupied by the PSS or the SSS, the UE does not The PDSCH of the PRB pair is received at the antenna port 7, 8, 9, 10, 11, 12, 13 or 14; in the special CP configuration, in the special subframe using configurations 1 and 6, if the VRB resource is used The UE does not receive the PDSCH at the antenna port 5; if the VRB resource allocation is used, the UE does not receive the PDSCH at the antenna port 7; if the UE does not receive all the RBs corresponding to the PDSCH, the UE may skip the translation of the TB. The code, and the physical layer will inform the upper layer that the TB has not successfully decoded.
基于上述 FDD和 TDD资源映射限制,对于 NCT载波,在 DRS与 PSS和 SSS映射资源重叠 的下行子帧中,承载 PSS和 SSS的***中间 72个子载波所在的 RB上不能传输 DRS ,基于 DRS 进行解调的 PDSCH也不能在这些 RB内传输。 但在 LTE-A Rel-8/9/lO***中, 这些 RB中的 PDSCH可以通过 CRS进行解调。此外,在 LTE-ARel-8/9/lO***中, PBCH、 PDCCH, PCFICH
( Physical Control Format Indicator Channel, 物理控制格式指示信道) 、 PHICH ( Physical Hybrid-ARQ Indicator Channel, 物理 HARQ指示信道)等下行信道的解调也都是基于 CRS 进行的。 在 Rel-11中, NCT载波上的 CRS不会用于下行数据传输的解调, 只能通过 DRS进 行解调, 在不能传输 DRS的 RB上, 承载在上述多种下行信道中的下行数据也就无法正常传 输, 从而降低 NCT载波的下行传输效率。 发明内容 本发明的目的是提供一种 DRS的传输方法及装置, 以解决 NCT载波中承载同步信号的 子载波所在的 RB不能用于传输 DRS导致的下行传输效率低的问题。 Based on the above-mentioned FDD and TDD resource mapping restrictions, for the NCT carrier, in the downlink subframe in which the DRS overlaps with the PSS and the SSS mapping resource, the DRS of the 72 subcarriers in the system carrying the PSS and the SSS cannot be transmitted, and the solution is based on the DRS. The modulated PDSCH cannot also be transmitted within these RBs. However, in the LTE-A Rel-8/9/10 system, the PDSCH in these RBs can be demodulated by CRS. In addition, in the LTE-ARel-8/9/lO system, PBCH, PDCCH, PCFICH Demodulation of the downlink channel such as the Physical Control Format Indicator Channel and the PHICH (Physical Hybrid-ARQ Indicator Channel) is also based on the CRS. In Rel-11, the CRS on the NCT carrier is not used for demodulation of downlink data transmission, and can only be demodulated by DRS. On the RBs that cannot transmit DRS, the downlink data carried in the multiple downlink channels mentioned above is also It is impossible to transmit normally, thereby reducing the downlink transmission efficiency of the NCT carrier. SUMMARY OF THE INVENTION An object of the present invention is to provide a method and an apparatus for transmitting a DRS, so as to solve the problem that a downlink transmission efficiency caused by an RB in which a subcarrier carrying a synchronization signal in an NCT carrier cannot be used for transmitting DRS is low.
本发明的目的是通过以下技术方案实现的: The object of the invention is achieved by the following technical solutions:
一种 DRS的传输方法, 包括: A method for transmitting DRS, including:
按照 DRS在天线端口 p的资源映射方式, 将需要在天线端口 p上传输的 DRS映射到下行 子帧中用于传输 DRS的 RE上; 同一时隙位置中,所述下行子帧中用于传输 DRS的 RE所在的 OFDM符号的编号, 与同步信号传输子帧中用于传输同步信号的 RE所在的 OFDM符号的编 号不同; According to the resource mapping manner of the DRS in the antenna port p, the DRS that needs to be transmitted on the antenna port p is mapped to the RE for transmitting the DRS in the downlink subframe; in the same slot position, the downlink subframe is used for transmission. The number of the OFDM symbol in which the RE of the DRS is located is different from the number of the OFDM symbol in which the RE for transmitting the synchronization signal in the synchronization signal transmission subframe is located;
通过所述天线端口 p传输所述下行子帧。 The downlink subframe is transmitted through the antenna port p.
一种 DRS的传输方法, 包括: A method for transmitting DRS, including:
通过天线端口 p接收下行子帧; Receiving a downlink subframe through the antenna port p;
按照 DRS在天线端口 p的资源映射方式, 在所述下行子帧中用于传输 DRS的 RE上获取 DRS; 同一时隙位置中, 所述下行子帧中用于传输 DRS的 RE所在的 OFDM符号的编号, 与 同步信号传输子帧中用于传输同步信号的 RE所在的 OFDM符号的编号不同。 Obtaining a DRS on an RE for transmitting a DRS in the downlink subframe according to a resource mapping manner of the DRS in the antenna port p; in the same slot position, an OFDM symbol in which the RE for transmitting the DRS in the downlink subframe is located The number of the OFDM symbol is different from the number of the OFDM symbol in which the RE for transmitting the synchronization signal in the synchronization signal transmission subframe is located.
一种 DRS的传输装置, 包括: A DRS transmission device includes:
资源映射模块, 用于按照 DRS在天线端口 p的资源映射方式, 将需要在天线端口 p上传 输的 DRS映射到下行子帧中用于传输 DRS的 RE上; 同一时隙位置中, 所述下行子帧中用于 传输 DRS的 RE所在的 OFDM符号的编号, 与同步信号传输子帧中用于传输同步信号的 RE 所在的 OFDM符号的编号不同; a resource mapping module, configured to map the DRS that needs to be transmitted on the antenna port p to the RE for transmitting the DRS in the downlink subframe according to the resource mapping manner of the DRS in the antenna port p; in the same slot position, the downlink The number of the OFDM symbol in which the RE for transmitting the DRS in the subframe is located is different from the number of the OFDM symbol in which the RE for transmitting the synchronization signal in the synchronization signal transmission subframe is located;
数据传输模块, 用于通过所述天线端口 p传输所述下行子帧。 And a data transmission module, configured to transmit the downlink subframe by using the antenna port p.
一种 DRS的传输装置, 包括: A DRS transmission device includes:
数据接收模块, 用于通过天线端口 p接收下行子帧; a data receiving module, configured to receive a downlink subframe by using an antenna port p;
下行参考符号获取模块,用于按照 DRS在天线端口 p的资源映射方式,在所述下行子帧 中用于传输 DRS的 RE上获取 DRS; 同一时隙位置中, 所述下行子帧中用于传输 DRS的 RE 所在的 OFDM符号的编号, 与同步信号传输子帧中用于传输同步信号的 RE所在的 OFDM符
号的编号不同。 a downlink reference symbol acquisition module, configured to acquire a DRS on an RE for transmitting a DRS in the downlink subframe according to a resource mapping manner of the DRS in the antenna port p; in the same slot position, the downlink subframe is used in the downlink subframe The number of the OFDM symbol in which the RE transmitting the DRS is located, and the OFDM symbol in which the RE for transmitting the synchronization signal in the synchronization signal transmission subframe is located The number of the number is different.
通过本发明实施例提供的方法及装置, 由于在同一时隙位置中, 下行子帧中用于传输 DRS的 RE所在的 OFDM符号的编号,与同步信号传输子帧中用于传输同步信号的 RE所在的 OFDM符号编号的不同, 保证了下行子帧中 DRS与同步信号的映射资源不重叠。 因此, 针 对非同步的 NCT载波, 应用本发明实施例提供的技术方案时, 可以在同步信号传输子帧中 同时传输 DRS及下行数据, 提高了非同步的 NCT载波的下行传输效率。 又由于本发明实施 例在同步信号传输子帧中可以传输 DRS, 因此可以基于 DRS正常接收下行数据。 附图说明 图 la为 FDD LTE无线帧中同步信号映射位置示意图; The method and the device provided by the embodiment of the present invention, the number of the OFDM symbol in which the RE for transmitting the DRS in the downlink subframe is located in the same slot position, and the RE used to transmit the synchronization signal in the synchronization signal transmission subframe The OFDM symbol number is different, and the mapping resources of the DRS and the synchronization signal in the downlink subframe are not overlapped. Therefore, when the technical solution provided by the embodiment of the present invention is applied to the non-synchronized NCT carrier, the DRS and the downlink data can be simultaneously transmitted in the synchronization signal transmission subframe, thereby improving the downlink transmission efficiency of the asynchronous NCT carrier. Moreover, since the DRS can be transmitted in the synchronization signal transmission subframe in the embodiment of the present invention, the downlink data can be normally received based on the DRS. BRIEF DESCRIPTION OF THE DRAWINGS Figure la is a schematic diagram of a synchronization signal mapping position in a FDD LTE radio frame;
图 lb为 TDD LTE无线帧中同步信号映射位置示意图; Figure lb is a schematic diagram of the location of the synchronization signal mapping in the TDD LTE radio frame;
图 2a为常规 CP下, 下行子帧在天线端口 5的 DRS pattern; 2a is a DRS pattern of a downlink subframe at an antenna port 5 under a conventional CP;
图 2b为扩展 CP下, 下行子帧在天线端口 5的 DRS pattern; 2b is a DRS pattern of the downlink subframe at the antenna port 5 under the extended CP;
图 3a为常规 CP下, 下行子帧在天线端口 7和天线端口 9的 DRS pattern; Figure 3a shows the DRS pattern of the downlink subframe at antenna port 7 and antenna port 9 under a conventional CP;
图 3b为扩展 CP下, 下行子帧在天线端口 7的 DRS pattern; Figure 3b shows the DRS pattern of the downlink subframe at the antenna port 7 under the extended CP;
图 4为本发明实施例提供的一种方法流程图; 4 is a flowchart of a method according to an embodiment of the present invention;
图 5a为常规 CP下, FDD***下行子帧在天线端口 5的打孔 DRS pattern; 5a is a punctured DRS pattern of the downlink subframe of the FDD system at the antenna port 5 under the conventional CP;
图 5b为扩展 CP下, FDD***下行子帧在天线端口 5的打孔 DRS pattern; Figure 5b shows the DRS pattern of the downlink subframe of the FDD system at the antenna port 5 under the extended CP;
图 6a为常规 CP下, FDD***下行子帧在天线端口 7 ~ 14的打孔 DRS pattern; Figure 6a shows the DRS pattern of the downlink subframe of the FDD system at antenna ports 7 ~ 14 under the conventional CP;
图 6b为扩展 CP下, FDD***下行子帧在天线端口 7 ~ 14的打孔 DRS pattern; Figure 6b shows the punctured DRS pattern of the downlink subframe of the FDD system at the antenna port 7 ~ 14 under the extended CP;
图 7a为删除一个打孔 OFDM符号中的 DRS映射关系时, 常规 CP下, TDD***常规下行 子帧在天线端口 7 ~ 14的打孔 DRS pattern; 7a is a punctured DRS pattern of a conventional downlink subframe of a TDD system at antenna ports 7 to 14 when a DRS mapping relationship in a punctured OFDM symbol is deleted;
图 7b为删除两个打孔 OFDM符号中的 DRS映射关系时, 常规 CP下, TDD***常规下行 子帧在天线端口 7 ~ 14的打孔 DRS pattern; Figure 7b shows the DRS pattern of the conventional downlink subframe of the TDD system at the antenna port 7 ~ 14 when the DRS mapping relationship in the two punctured OFDM symbols is deleted.
图 8a为删除一个打孔 OFDM符号中的 DRS映射关系时, 常规 CP下, TDD***特殊子帧 配置 3/4/8在天线端口 7 ~ 14的打孔 DRS pattern; Figure 8a shows the DRS pattern of the TDD system special subframe configuration 3/4/8 at the antenna port 7 ~ 14 when deleting the DRS mapping relationship in a punctured OFDM symbol;
图 8b为删除两个打孔 OFDM符号中的 DRS映射关系时, 常规 CP下, TDD***特殊子帧 配置 3/4/8在天线端口 7 ~ 14的打孔 DRS pattern; Figure 8b shows the DRS pattern of the TDD system special subframe configuration 3/4/8 at the antenna port 7 ~ 14 when the DRS mapping relationship in the two punctured OFDM symbols is deleted.
图 9a为删除一个打孔 OFDM符号中的映射关系时, 常规 CP下, TDD***特殊子帧配置 1/2/6/7在天线端口 7 ~ 14的打孔 DRS pattern; Figure 9a shows the DRS pattern of the TDD system special subframe configuration 1/2/6/7 at the antenna port 7 ~ 14 when deleting the mapping relationship in a punctured OFDM symbol;
图 9b为删除两个打孔 OFDM符号中的 DRS映射关系时, 常规 CP下, TDD***特殊子帧 配置 1/2/6/7在天线端口 7 ~ 14的打孔 DRS pattern;
图 10a为常规 CP下, 下行子帧在天线端口 5的新的 DRS pattern; FIG. 9b is a DRS pattern of the TDD system special subframe configuration 1/2/6/7 at the antenna ports 7 to 14 when the DRS mapping relationship in the two punctured OFDM symbols is deleted; Figure 10a shows a new DRS pattern of the downlink subframe at antenna port 5 under a conventional CP;
图 10b为扩展 CP下, 下行子帧在天线端口 5的新的 DRS pattern; Figure 10b shows the new DRS pattern of the downlink subframe at the antenna port 5 under the extended CP;
图 11a为常规 CP下, 常规子帧在天线端口 7 ~ 14的新的 DRS pattern; Figure 11a shows a new DRS pattern of a conventional subframe at antenna ports 7 to 14 under a conventional CP;
图 l ib为扩展 CP下, 常规子帧在天线端口 7 ~ 14的新的 DRS pattern; Figure l ib is a new DRS pattern with regular sub-frames at antenna ports 7 ~ 14 under extended CP;
图 12a为常规 CP下, TDD***特殊子帧配置 1/2/6/7在天线端口 7 ~ 14的第一个新的 DRS pattern; Figure 12a shows the first new DRS pattern of the TDD system special subframe configuration 1/2/6/7 at antenna ports 7 ~ 14 under conventional CP;
图 12b为常规 CP下, TDD***特殊子帧配置 1/2/6/7在天线端口 7~14的第 .二个新的 DRS pattern; Figure 12b shows the second new DRS pattern of the TDD system special subframe configuration 1/2/6/7 at antenna ports 7~14 under conventional CP;
图 12c为常规 CP下, TDD***特殊子帧配置 1/2/6/7在天线端口 7~14的第三个新的 DRS pattern; Figure 12c shows the third new DRS pattern of the TDD system special subframe configuration 1/2/6/7 at antenna ports 7~14 under conventional CP;
图 12d为常规 CP下, TDD***特殊子帧配置 3/4/8在天线端口 7 ~ 14的第 ·一个新的 DRS pattern; Figure 12d shows the special sub-frame configuration of the TDD system 3/4/8 at the antenna port 7 ~ 14 under the conventional CP.
图 12e为常规 CP下, TDD***特殊子帧配置 3/4/8在天线端口 7~14的第 -二个新的 DRS pattern; Figure 12e shows the second new DRS pattern of the TDD system special subframe configuration 3/4/8 at antenna ports 7~14 under conventional CP;
图 12f为常规 CP下, TDD***特殊子帧配置 3/4/8在天线端口 7~14的第 -三个新的 DRS pattern; Figure 12f shows the first three new DRS patterns of the TDD system special subframe configuration 3/4/8 at antenna ports 7~14 under conventional CP;
图 12g为扩展 CP下, TDD***特殊子帧配置 1/2/3/5/6在天线端口 7~14的第一个新的 DRS pattern; Figure 12g shows the first new DRS pattern of the TDD system special subframe configuration 1/2/3/5/6 at antenna ports 7~14 under extended CP;
图 12h为扩展 CP下, TDD***特殊子帧配置 1/2/3/5/6在天线端口 7~14的第二个新的 DRS pattern; Figure 12h shows the second new DRS pattern of the TDD system special subframe configuration 1/2/3/5/6 at antenna ports 7~14 under extended CP;
图 13为本发明实施例提供的另一种方法流程图; FIG. 13 is a flowchart of another method according to an embodiment of the present invention;
图 14为本发明实施例提供的网络侧装置结构示意图; FIG. 14 is a schematic structural diagram of a network side device according to an embodiment of the present disclosure;
图 15为本发明实施例提供的一种 UE侧装置结构示意图; FIG. 15 is a schematic structural diagram of a UE side device according to an embodiment of the present disclosure;
图 16为本发明实施例提供的另一种 UE侧装置结构示意图。 具体实施方式 基于 LTE Rel 11中规定的非同步的 NCT载波,本发明提供了一种 DRS在其传输所在的天 线端口上的资源映射方式, 其主要思想为: DRS映射在同步信号占用的 RE以外的 RE上, 以支持 DRS与同步信号在同一下行子帧中同时传输。 本发明实施例中, 同步信号是指 PSS/SSS o FIG. 16 is a schematic structural diagram of another UE side device according to an embodiment of the present invention. The present invention provides a resource mapping manner of a DRS on an antenna port where the transmission is located, and the main idea is as follows: DRS mapping is outside the RE occupied by the synchronization signal. On the RE, the DRS and the synchronization signal are simultaneously transmitted in the same downlink subframe. In the embodiment of the present invention, the synchronization signal refers to PSS/SSS o
在 e B侧, 本发明实施例提供的一种 DRS的传输方法如图 4所示, 具体包括如下操作: 步骤 100、 按照 DRS在天线端口 p的资源映射方式, 将需要在天线端口 p上传输的 DRS
映射到下行子帧中用于传输 DRS的 RE上; 同一时隙位置中, 上述下行子帧中用于传输 DRS 的 RE所在的 OFDM符号的编号, 与同步信号传输子帧中用于传输同步信号的 RE所在的 OFDM符号的编号不同; On the e B side, a method for transmitting a DRS according to an embodiment of the present invention is as shown in FIG. 4 , and specifically includes the following operations: Step 100: According to a resource mapping manner of the DRS in the antenna port p, the method needs to be transmitted on the antenna port p. DRS Mapping to the RE for transmitting the DRS in the downlink subframe; in the same slot position, the number of the OFDM symbol in which the RE for transmitting the DRS in the downlink subframe is located, and the synchronization signal used in the synchronization signal transmission subframe The number of the OFDM symbol in which the RE is located is different;
其中, 对于 FDD***, 同步信号传输子帧是指无线帧中的子帧 0和子帧 5 , 具体包括: PSS在时隙 0 (即子帧 0的第一个时隙)和时隙 10 (即子帧 5的第一个时隙)的最后一个 OFDM 符号上传输, SSS在时隙 0和时隙 10的倒数第二个 OFDM符号上传输; 对于 TDD***, 同步 信号传输子帧是指无线帧中的子帧 0和子帧 5、 以及子帧 1和子帧 6 , 具体包括: PSS在子帧 1 (特殊子帧)和子帧 6 (可能为特殊子帧, 也可能为常规子帧, 取决于 TDD上 /下行配置) 的第三个 OFDM符号上传输, SSS在时隙 1 (即子帧 0的第二个时隙)和时隙 1 1 (即子帧 5的 第二个时隙) 的最后一个 OFDM符号上传输。 不排除上述子帧和 OFDM定义以外的其他的 同步信号传输子帧和 OFDM符号定义。 For the FDD system, the synchronization signal transmission subframe refers to subframe 0 and subframe 5 in the radio frame, and specifically includes: PSS is in slot 0 (ie, the first slot of subframe 0) and slot 10 (ie, The last OFDM symbol of the first slot of subframe 5 is transmitted, and the SSS is transmitted on the second to last OFDM symbols of slot 0 and slot 10; for the TDD system, the synchronization signal transmission subframe refers to the radio frame Subframe 0 and subframe 5, and subframe 1 and subframe 6, specifically include: PSS in subframe 1 (special subframe) and subframe 6 (may be a special subframe, or a regular subframe, depending on TDD Transmission on the third OFDM symbol of the uplink/downlink configuration, SSS is at the end of slot 1 (ie, the second slot of subframe 0) and slot 1 1 (ie, the second slot of subframe 5) Transmission on one OFDM symbol. The above-mentioned subframe and other synchronization signal transmission subframes and OFDM symbol definitions other than the OFDM definition are not excluded.
本发明实施例中, DRS在天线端口 p的资源映射方式既可以是现有的 LTE-A通信标准中 定义的 DRS pattern, 例如图 2a〜图 3b所示的 DRS pattern,也可以是新定义的 DRS在天线端口 p的资源映射方式。 如果新定义 DRS在天线端口 P的资源映射方式, 需满足在同步信号传输 子帧的同一时隙位置中, 用于传输 DRS的 RE所在的 OFDM符号编号, 与用于传输同步信号 的 RE所在的 OFDM符号编号不同。 其中, 上述同一时隙位置, 具体是指任意一个下行子帧 中所包含的多个时隙 (2个) 时隙, 在一个下行子帧中的相对位置, 该相对位置可以描述 为一个下行子帧中的前一个时隙位置, 或者为一个下行子帧中的后一个时隙位置, 或者为 一个下行子帧中的第一个时隙位置, 或者为一个下行子帧中的第二个时隙位置, 或者为一 个下行子帧中的编号为奇数的时隙位置, 或者为一个下行子帧中的编号为偶数的时隙位 置。 例如, 对于 FDD***, 同步信号在一个无线帧中的时隙 0和时隙 10的最后两个 OFDM符 号上传输, 即常规 CP下, 为下行子帧 0和 5的前一个(或第一个或编号为偶数的)时隙位置 中的编号 1=5和 6的 OFDM符号, 扩展 CP下, 为下行子帧 0和 5的前一个(或第一个或编号为 偶数的) 时隙位置中的编号 1=4和 5的 OFDM符号, 则 DRS在任意一个下行子帧中在天线端 口 p传输时, DRS在天线端口 p的资源映射方式需要满足: 在该下行子帧中, 传输 DRS的 RE 所在的 OFDM符号 (DRS映射的 OFDM符号) 不能为该下行子帧的前一个 (或第一个或编 号为偶数的) 时隙位置中的常规 CP下的编号 1=5和 6的 OFDM符号上, 扩展 CP下编号 1=4和 5 的 OFDM符号上。 其中, OFDM符号从 1=0开始编号。 In the embodiment of the present invention, the resource mapping manner of the DRS at the antenna port p may be a DRS pattern defined in the existing LTE-A communication standard, for example, the DRS pattern shown in FIG. 2a to FIG. 3b, or may be newly defined. The resource mapping mode of the DRS at the antenna port p. If the resource mapping mode of the DRS in the antenna port P is newly defined, it is necessary to satisfy the OFDM symbol number in which the RE for transmitting the DRS is located in the same slot position of the synchronization signal transmission subframe, and the RE for transmitting the synchronization signal. The OFDM symbol numbers are different. The same time slot position refers to a plurality of time slots (2) time slots included in any one downlink subframe, and the relative position in one downlink subframe may be described as a downlink. The position of the previous time slot in the frame, or the position of the next time slot in a downlink subframe, or the first time slot position in a downlink subframe, or the second time in a downlink subframe. The slot position is either an odd-numbered slot position in a downlink subframe or an even-numbered slot position in a downlink subframe. For example, for an FDD system, the synchronization signal is transmitted on the last two OFDM symbols of slot 0 and slot 10 in one radio frame, ie, the previous one (or the first) of the downlink subframes 0 and 5 under the conventional CP. Or OFDM symbols numbered 1=5 and 6 in the slot position of the even number, in the extended CP, in the previous (or first or even numbered) slot position of the downlink subframes 0 and 5. The OFDM symbols of the numbers 1=4 and 5, when the DRS is transmitted in the antenna port p in any one of the downlink subframes, the resource mapping manner of the DRS at the antenna port p needs to be satisfied: In the downlink subframe, the RE of the DRS is transmitted. The OFDM symbol (DRS-mapped OFDM symbol) in which the OFDM symbol is located cannot be the OFDM symbol of the numbers 1=5 and 6 under the regular CP in the previous (or first or even-numbered) slot position of the downlink subframe. , Extended OFDM on the OFDM symbols numbered 1=4 and 5. Wherein, the OFDM symbols are numbered starting from 1=0.
步骤 1 10、 通过上述天线端口 p传输该下行子帧。 Step 1 10: The downlink subframe is transmitted through the antenna port p.
由于 DRS是与下行数据同时传输的, 因此, 在上述下行子帧中还传输下行数据, 具体 的, 可以通过如下四种方式传输: (一)在上述下行子帧每个时隙的下行数据传输所在的 RB中用于传输 DRS的 RE以外的 RE上映射下行数据; (二)在上述下行子帧每个时隙的下 行数据传输所在的 RB中用于传输 DRS的 RE以外的 RE、 和与同步信号传输子帧中用于传输
同步信号的 RE位置相同的 RE以外的 RE上, 映射下行数据。 对于第 (二)种下行数据映射 方式,可以仅针对同步信号传输子帧,也可以是不论该下行子帧是否为同步信号传输子帧, 都在上述下行子帧每个时隙的下行数据传输所在的 RB中用于传输 DRS的 RE以外的 RE、 和 与同步信号传输子帧中用于传输同步信号的 RE位置相同的 RE以外的 RE上, 映射下行数据 (即该下行子帧中即使不存在同步信号传输,但下行数据也不会映射在其调度的 RB中与同 步信号对应的 RE位置重叠的部分,例如不会映射到当前下行子帧中与同步信号在其传输子 帧中的同一个时隙位置中对应的 OFDM符号的编号相同的 OFDM符号上, 其调度的 RB中与 ***下行带宽的中间 6个 RB重叠的部分) 。 如果支持多天线端口的下行数据传输, 进一步 的, DRS在各个天线端口上的资源映射方式指示的用于传输 DRS的 RE上均不映射下行数 据。 本发明实施例中, 下行数据包括, 承载在 PDSCH、 PBCH、 PDCCH (包括 e-PDCCH, 即增强的 PDCCH ) 、 PCFICH、 和 /或 PHICH等下行信道中的下行数据。 Since the DRS is transmitted simultaneously with the downlink data, the downlink data is also transmitted in the downlink subframe. Specifically, the downlink data may be transmitted in the following four manners: (1) downlink data transmission in each time slot of the downlink subframe The downlink data is mapped on the RE other than the RE for transmitting the DRS in the RB; (2) the RE other than the RE for transmitting the DRS in the RB where the downlink data transmission in each slot of the downlink subframe is located, and Synchronous signal transmission sub-frame for transmission The downlink data is mapped on the RE other than the RE having the same RE position of the synchronization signal. For the (2)th downlink data mapping mode, the downlink data transmission may be performed only for the synchronization signal, or may be the downlink data transmission of each time slot of the downlink subframe regardless of whether the downlink subframe is a synchronization signal transmission subframe. Mapping the downlink data on the RE other than the RE for transmitting the DRS and the RE other than the RE for transmitting the synchronization signal in the synchronization signal transmission subframe, that is, even if the downlink subframe is not There is a synchronization signal transmission, but the downlink data also does not map the portion of the RB that is scheduled to overlap with the RE position corresponding to the synchronization signal in its scheduled RB, for example, it is not mapped to the same in the current downlink subframe and the synchronization signal in its transmission subframe. A portion of the OFDM symbol with the same OFDM symbol in the same slot position that overlaps with the middle 6 RBs of the system downlink bandwidth. If the downlink data transmission of the multi-antenna port is supported, the DRS does not map the downlink data on the RE for transmitting the DRS indicated by the resource mapping manner on each antenna port. In the embodiment of the present invention, the downlink data includes downlink data that is carried in a downlink channel such as a PDSCH, a PBCH, a PDCCH (including an e-PDCCH, that is, an enhanced PDCCH), a PCFICH, and/or a PHICH.
如果在上述下行子帧中还传输其他下行参考符号, 那么上述本发明实施例提供的方法 中, 进一步的, 同一时隙位置中, 该下行子帧中用于传输 DRS的 RE所在的 OFDM符号的编 号, 与其他下行参考符号传输子帧中用于传输其他下行参考符号的 RE所在的 OFDM符号的 编号也不同。 该其他下行参考符号包括 CRS、 PRS (定位用参考符号) 、 CSI-RS ( Channel State Information- Reference Signals,信道状态信息测量用参考符号 )中的一种或多种组合。 相应的, 可以通过方式(三)或方式(四) 映射下行数据: (三)在上述下行子帧的每个 时隙中该下行数据传输所在的 RB中用于传输 DRS的 RE以外的 RE、 和其他下行参考符合传 输子帧中用于传输其他下行参考符号的 RE以外的 RE上, 映射下行数据; (四)在上述下 行子帧的每个时隙中该下行数据传输所在的 RB中用于传输 DRS的 RE以外的 RE、 和与其他 下行参考符号传输子帧中用于传输其他下行参考符号的 RE位置相同的 RE以外的 RE、 和与 同步信号传输子帧中用于传输同步信号的 RE位置相同的 RE以外的 RE上, 映射下行数据。 对于第 (三)种下行数据映射方式, 可以仅针对其他下行参考符号传输子帧, 也可以是无 论该下行子帧是否为其他下行参考符号传输子帧, 都在上述下行子帧的每个时隙中该下行 数据传输所在的 RB中用于传输 DRS的 RE以外的 RE、 和其他下行参考符合传输子帧中用于 传输其他下行参考符号的 RE以外的 RE上, 映射下行数据。 对于第 (四)种下行数据映射 方式, 可以针对其他下行参考符号传输子帧, 也可以针对同步信号传输子帧, 还可以针对 下行子帧既是其他下行参考符号传输子帧, 也是同步信号传输子帧, 另外, 还可以是无论 该下行子帧是哪种下行子帧, 都在上述下行子帧的每个时隙中该下行数据传输所在的 RB 中用于传输 DRS的 RE以外的 RE、 和与其他下行参考符号传输子帧中用于传输其他下行参 考符号的 RE位置相同的 RE以外的 RE、 和与同步信号传输子帧中用于传输同步信号的 RE位 置相同的 RE以外的 RE上, 映射下行数据。 如果支持多天线端口的下行数据传输, 进一步 的, DRS在各个天线端口上的资源映射方式指示的用于传输 DRS的 RE上均不映射下行数
据。 If the other downlink reference symbols are also transmitted in the foregoing downlink subframe, in the method provided by the embodiment of the present invention, further, in the same slot position, the OFDM symbol of the RE for transmitting the DRS in the downlink subframe is The number of the OFDM symbol in which the RE for transmitting other downlink reference symbols in the other downlink reference symbol transmission subframes is different is also different. The other downlink reference symbols include one or more combinations of CRS, PRS (Reference Reference Symbol), and CSI-RS (Channel State Information-Reference Signals). Correspondingly, the downlink data may be mapped by means of mode (3) or mode (4): (3) in each time slot of the downlink subframe, an RE other than the RE for transmitting the DRS in the RB where the downlink data transmission is located, And the other downlink reference is matched with the RE other than the RE for transmitting the other downlink reference symbols in the transmission subframe, and the downlink data is mapped; (4) in the RB where the downlink data transmission is used in each time slot of the downlink subframe An RE other than the RE transmitting the DRS, and an RE other than the REs of the other downlink reference symbol transmission subframes for transmitting other downlink reference symbols, and the synchronization signal transmission sub-frame for transmitting the synchronization signal Downstream data is mapped on REs other than REs with the same RE location. For the (3)th downlink data mapping mode, the subframe may be transmitted only for other downlink reference symbols, or may be any of the downlink subframes, regardless of whether the downlink subframe is another downlink reference symbol transmission subframe. In the slot, the RE other than the RE for transmitting the DRS in the RB in which the downlink data transmission is located, and the other downlink reference are matched with the REs other than the RE for transmitting the other downlink reference symbols in the transmission subframe, and the downlink data is mapped. For the fourth (four) downlink data mapping mode, the subframe may be transmitted for other downlink reference symbols, or the subframe may be transmitted for the synchronization signal, and the downlink subframe may be another downlink reference symbol transmission subframe, and is also a synchronization signal transmission sub-frame. The frame may be an RE other than the RE for transmitting the DRS in the RB where the downlink data transmission is located in each of the downlink subframes, regardless of the downlink subframe of the downlink subframe. REs other than REs having the same RE position for transmitting other downlink reference symbols in other downlink reference symbol transmission subframes, and REs other than REs having the same RE position for transmitting synchronization signals in the synchronization signal transmission subframe, Map downstream data. If the downlink data transmission of the multi-antenna port is supported, further, the DRS does not map the downlink number on the RE for transmitting the DRS indicated by the resource mapping manner on each antenna port. According to.
需要说明的, 如果工作小区上不存在传统(legacy ) PDCCH、 PCFICH、 PHICH等下行 信道传输, 所述传统下行信道, 即在一个下行子帧中的控制区域(对于不同情况, 控制区 域占用 OFDM符号数不同, 可以为偶数时隙的前 1~2个 OFDM符号, 或前 1~3个 OFDM符号, 或前 1~4个 OFDM符号)传输的下行信道, 则上述下行数据映射时: 可以针对一个子帧中的 所有 OFDM符号进行映射, 即可以映射在传统成员载波上定义的控制区域传输, 即对于该 工作小区不定义控制区域; 否则, 只能在一个下行子帧中的数据区域中的 OFDM符号进行 映射。 上述本发明实施例提供的方法可以是针对所有下行子帧的, 优选的, 也可以是针对 同步信号传输子帧的, 即上述方法生效的下行子帧仅为同步信号传输子帧。 如果上述的下 行子帧是同步信号传输子帧, 则还将同步信号映射到上述下行子帧中用于传输同步信号的 RE上。 相应的, 在执行上述步骤 100之前, 还可以根据预先设定的映射规则, 判断下行子 帧是否需要按照本发明实施例提供的方法进行 DRS映射,如果需要,则执行步骤 100,否则, 按照现有的 DRS映射方法进行映射。 It should be noted that if there is no downlink channel transmission such as legacy PDCCH, PCFICH, PHICH, etc. on the working cell, the traditional downlink channel, that is, the control region in one downlink subframe (the control region occupies the OFDM symbol for different situations) If the number is different, it may be the first 1~2 OFDM symbols of the even time slot, or the first 1~3 OFDM symbols, or the first 1~4 OFDM symbols), and the downlink data mapping may be: All OFDM symbols in the subframe are mapped, that is, the control region transmission defined on the legacy component carrier can be mapped, that is, the control region is not defined for the working cell; otherwise, the OFDM can only be in the data region in one downlink subframe. Symbols are mapped. The method provided by the embodiment of the present invention may be for all downlink subframes, preferably, or may be for a synchronization signal transmission subframe, that is, the downlink subframes in effect of the foregoing method are only synchronization signal transmission subframes. If the above-mentioned downlink subframe is a synchronization signal transmission subframe, the synchronization signal is also mapped to the RE for transmitting the synchronization signal in the above-mentioned downlink subframe. Correspondingly, before performing the foregoing step 100, it may be determined whether the downlink subframe needs to be DRS mapped according to the method provided by the embodiment of the present invention, if necessary, step 100 is performed, otherwise, according to the current Some DRS mapping methods are mapped.
上述下行子帧中用于传输 DRS的 RE所在的 RB , 具体包括: (一)该下行子帧中下行 数据传输所在的 RB集合中的所有 RB, 其中, 该包含用于传输 DRS的 RE的下行数据传输所 在的 RB为第一 RB集合,该第一 RB集合包括下行可用带宽内的所有用于传输 DRS的 RE所在 的 RB, 且包含与同步信号传输子帧中用于传输同步信号的 RE所在的 RB编号相同的 RB。 也 就是说, 在当前工作小区的下行可用带宽内的所有用于传输 DRS的 RE所在的 RB , 均使用 本发明实施例提供的方法对 DRS进行映射。 或者, 该包含用于传输 DRS的 RE的下行数据传 输所在的 RB为第二 RB集合,该第二 RB集合包括下行可用带宽内任何用于传输 DRS的 RE所 在的 RB的组合。 也就是说, 在下行可用带宽内的任意用于传输 DRS的 RE所在的 RB组合, 使用本发明实施例提供的方法对 DRS进行映射, 即使在这些 RB中没有传输同步信号和 /或 其他下行参考符号。该下行子帧中下行数据传输所在的 RB集合为下行可用带宽内的任一位 置的 RB集合; 或者, (二)该下行子帧中下行数据传输所在的 RB集合中与同步信号传输 子帧中用于传输同步信号的 RE所在的 RB编号相同的 RB。 也就是说, 仅在同步信号传输子 帧中用于传输同步信号的 RE所在的 RB位置相同的 RB , 使用本发明实施例提供的方法对 DRS进行映射, 对下行可用带宽中的其他 RB可以沿用现有的映射方式。 The RB in which the RE for transmitting the DRS in the downlink subframe is located includes: (1) all the RBs in the RB set in which the downlink data transmission is in the downlink subframe, where the downlink includes the RE for transmitting the DRS The RB where the data transmission is located is a first RB set, where the first RB set includes all the RBs of the REs for transmitting the DRS in the downlink available bandwidth, and includes the RE for transmitting the synchronization signal in the synchronization signal transmission subframe. The RB number is the same as the RB. That is to say, all the RBs of the REs for transmitting the DRS in the downlink available bandwidth of the current working cell are mapped by using the method provided by the embodiment of the present invention. Alternatively, the RB in which the downlink data transmission of the RE for transmitting the DRS is located is a second RB set, and the second RB set includes a combination of RBs of any REs for transmitting the DRS in the downlink available bandwidth. That is, the RB combination in which the REs for transmitting the DRS are located in the downlink available bandwidth is mapped using the method provided by the embodiment of the present invention, even if no synchronization signal and/or other downlink reference are transmitted in the RBs. symbol. The RB set in which the downlink data transmission is located in the downlink subframe is an RB set at any position within the downlink available bandwidth; or (2) the RB set in which the downlink data transmission is located in the downlink subframe and the synchronization signal transmission subframe The RB with the same RB number of the RE for transmitting the synchronization signal. That is to say, only the RBs of the same RBs in which the REs of the synchronization signal are located in the synchronization signal transmission subframe are mapped to the DRS by using the method provided by the embodiment of the present invention, and the other RBs in the downlink available bandwidth can be used. Existing mapping methods.
基于上述本发明实施例, 提供了三种优选的实现方式, 详细描述如下。 Based on the above embodiments of the present invention, three preferred implementations are provided, which are described in detail below.
第一种优选的实现方式 First preferred implementation
在第一种优选的实现方式中,针对天线端口 p,可以从现有的 LET-A通信标准中为该天 线端口 p定义的至少一个 DRS pattern中,选择其 DRS映射资源与同步信号映射资源不存在重 叠的 DRS pattern。 那么, 上述的 DRS在天线端口 p的资源映射方式是指从 LTE-A Rel-10*** 中针对该天线端口 p定义的至少一种 DRS资源映射方式中选择的一种 DRS资源映射方式。选
择的 DRS资源映射方式满足: 同一时隙位置中, 选择的 DRS资源映射方式确定的下行子帧 中用于传输 DRS的 RE所在的 OFDM符号的编号与同步信号传输子帧中用于传输同步信号 的 RE所在的 OFDM符号的编号不同。 In a first preferred implementation manner, for the antenna port p, the DRS mapping resource and the synchronization signal mapping resource may be selected from at least one DRS pattern defined by the antenna port p in the existing LET-A communication standard. There are overlapping DRS patterns. Then, the resource mapping manner of the DRS in the antenna port p refers to a DRS resource mapping manner selected from at least one DRS resource mapping manner defined by the antenna port p in the LTE-A Rel-10 system. Choose The selected DRS resource mapping manner satisfies: in the same slot position, the number of the OFDM symbol in which the RE for transmitting the DRS is located in the downlink subframe determined by the selected DRS resource mapping manner and the synchronization signal in the synchronization signal transmission subframe are used for transmitting the synchronization signal The number of the OFDM symbol in which the RE is located is different.
其中, LTE- A Rel- 10***中针对该天线端口 p定义的至少一种 DRS资源映射方式具体可 以是图 2a~3b所示的 DRS pattem。 具体如下: The at least one type of DRS resource mapping defined by the antenna port p in the LTE-A Rel-10 system may specifically be the DRS device shown in FIG. 2a to FIG. 3b. details as follows:
针对天线端口 ρ=5 , 如果上述下行子帧是使用常规 CP的 TDD***下行子帧 (包括 TDD ***的特殊子帧和 TDD***的常规下行子帧) , 则可以使用图 2a所示的 DRS pattern作为上 述步骤 100中所述的 DRS在天线端口 p的资源映射方式,如果上述下行子帧是使用扩展 CP的 TDD***下行子帧,则可以使用图 2b所示的 DRS pattern作为上述步骤 100中所述的 DRS在天 线端口 p的资源映射方式。 For the antenna port ρ=5, if the downlink subframe is a downlink subframe of a TDD system using a normal CP (including a special subframe of the TDD system and a regular downlink subframe of the TDD system), the DRS pattern shown in FIG. 2a can be used. As the resource mapping manner of the DRS in the antenna port p described in the above step 100, if the downlink subframe is a downlink subframe of a TDD system using an extended CP, the DRS pattern shown in FIG. 2b may be used as the foregoing step 100. The resource mapping mode of the DRS at the antenna port p.
或者, Or,
针对 p=7或 p=8或 Ρ = 7'···'υ + 6, 如果上述下行子帧是使用常规 CP的常规下行子帧, 则For p=7 or p=8 or Ρ = 7 '···' υ + 6 , if the above downlink subframe is a regular downlink subframe using a regular CP, then
DRS在天线端口 p的资源映射方式可以是指, LTE-A Rel-10***中特殊子帧配置 3、 4、 8在 常规 CP下的天线端口 p的 DRS资源映射方式。具体的, 针对天线端口 p=7或 p=8或 P = 7,8或 ^ = 7,8,11 ^ ^ = 7,8,13 ^ 或 ρ = 7,8,11,13 ,使用图 3a中排左侧所示的 DRS pattern作为上述步 骤 100中所述的 DRS在天线端口 p的资源映射方式; 针对天线端口 Ρ = 7'···'υ + 6中的天线端 口 9、 天线端口 10、 天线端口 12和 /或天线端口 14, 使用图 3a中排右侧所示的 DRS pattern作 为上述步骤 100中所述的 DRS在天线端口 p的资源映射方式。 此时, 由于 DRS占用了下行子 帧偶数时隙的第三、四个 OFDM符号,因此,天线端口 p仅支持 2个 OFDM符号的传统 PDCCH 传输。 The resource mapping mode of the DRS in the antenna port p may refer to the DRS resource mapping mode of the antenna port p of the special subframe configuration 3, 4, and 8 in the LTE-A Rel-10 system in the conventional CP. Specifically, for the antenna port p=7 or p=8 or P =7 , 8 or ^= 7,8,11 ^ ^ = 7,8,13 ^ or ρ = 7,8,11,13 , use Figure 3a The DRS p attern shown on the left side of the middle row is used as the resource mapping mode of the DRS in the antenna port p described in the above step 100; the antenna port 9 and the antenna port in the antenna port Ρ = 7 '···' υ + 6 10. The antenna port 12 and/or the antenna port 14 use the DRS pattern shown on the right side of the row in FIG. 3a as the resource mapping manner of the DRS at the antenna port p described in the above step 100. At this time, since the DRS occupies the third and fourth OFDM symbols of the even subframe of the downlink subframe, the antenna port p supports only the legacy PDCCH transmission of 2 OFDM symbols.
或者, Or,
针对 p=7或 p=8或 Ρ = 7'···'υ + 6 ,如果上述下行子帧是使用常规 CP的 TDD***常规下行 子帧, DRS在天线端口 p的资源映射方式还可以是指 , LTE-A-Rel-10***中特殊子帧配置 1、 2、 6、 7在常规 CP下的天线端口 p的 DRS资源映射方式。 具体的, 针对天线端口 p=7 、 p=8、 Ρ = 7,···,υ + 6中的天线端口 11和 /或天线端口 13 , 使用图 3a上排左侧所示的 DRS pattern作为 上述步骤 100中所述的 DRS在天线端口 p的资源映射方式; 针对天线端口 Ρ = 7'···'υ + 6中的 天线端口 9、 天线端口 10、 天线端口 12和 /或天线端口 14 , 使用图 3a上 4 右侧所示的 DRS pattern作为上述步骤 100中所述的 DRS在天线端口 p的资源映射方式。 For p=7 or p=8 or Ρ = 7 '···' υ + 6 , if the above downlink subframe is a conventional downlink subframe of a TDD system using a conventional CP, the resource mapping manner of the DRS at the antenna port p may also be Refers to the DRS resource mapping mode of the antenna port p under the normal CP in the special subframe configuration 1, 2, 6, and 7 in the LTE-A-Rel-10 system. Specifically, for the antenna port p=7, p=8, Ρ =7 , . . . , antenna port 11 and/or antenna port 13 in υ + 6 , use the DRS pattern shown on the left side of the row in FIG. 3a as The resource mapping manner of the DRS in the antenna port p described in the above step 100; the antenna port 9, the antenna port 10, the antenna port 12, and/or the antenna port 14 in the antenna port Ρ = 7 '···' υ + 6 The DRS pattern shown on the right side of FIG. 3a is used as the resource mapping manner of the DRS at the antenna port p described in the above step 100.
或者, Or,
针对 p=7或 p=8或 Ρ = 7,···,υ + 6 ,如果上述下行子帧是使用扩展 CP的 TDD***常规下行 子帧, 上述 DRS在天线端口 p的资源映射方式可以是指, LTE-A Rel-10***中特殊子帧配置 1、 2、 3、 5、 6在扩展 CP下的天线端口 p的 DRS资源映射方式。 具体的, 针对天线端口 p=7 和 /或 p=8, 使用图 3b上图所示的 DRS pattern作为上述步骤 100中所述的 DRS在天线端口 p的
资源映射方式。 For p=7 or p=8 or Ρ =7 ,···, υ + 6 , if the downlink subframe is a conventional downlink subframe of the TDD system using the extended CP, the resource mapping manner of the DRS at the antenna port p may be Refers to the DRS resource mapping mode of the antenna port p under the extended CP in the special subframe configuration 1, 2, 3, 5, and 6 in the LTE-A Rel-10 system. Specifically, for the antenna port p=7 and/or p=8, the DRS pattern shown in the above figure of FIG. 3b is used as the DRS in the above step 100 at the antenna port p. Resource mapping method.
或者, Or,
针对 p=7或 p=8或 Ρ = 7'···'υ + 6 , 如果上述下行子帧是使用常规 CP的 TDD***特殊子 帧, 上述 DRS在天线端口 p的资源映射方式具体是指, LTE-A Rel-10***中常规下行子帧在 常规 CP下的天线端口 p的 DRS资源映射方式。 此时, 由于 DRS仅映射到下行子帧偶数时隙 的两个 OFDM符号中, 因此, 仅支持 1 ~ 4个天线端口传输, 如 =7或 =8或^? = 7,— + 6 , "=1、 2、 3、 4。具体的,针对天线端口 p=7 和 /或 p=8,使用图 3a下排左侧所示的 DRS pattern 作为上述步骤 100中所述的 DRS在天线端口 p的资源映射方式; 针对天线端口 Ρ = 7'···'υ + 6 中的天线端口 9和 /或天线端口 10,使用图 3a下排右侧所示的 DRS pattern作为上述步骤 100中 所述的 DRS在天线端口 p的资源映射方式。 For p=7 or p=8 or Ρ = 7 '···' υ + 6 , if the above downlink subframe is a TDD system special subframe using a conventional CP, the resource mapping manner of the above DRS at the antenna port p specifically refers to The DRS resource mapping manner of the antenna port p of the conventional downlink subframe in the LTE-A Rel-10 system in the conventional CP. At this time, since the DRS is only mapped to two OFDM symbols of the even subframe of the downlink subframe, only one to four antenna port transmissions are supported, such as =7 or =8 or ^ ?=7 , - +6 , " =1, 2, 3, 4. Specifically, for the antenna port p=7 and/or p=8, the DRS pattern shown on the left side of the lower row of FIG. 3a is used as the DRS described in the above step 100 at the antenna port p. Resource mapping mode; for the antenna port 9 of the antenna port 7 = 7 '···' υ + 6 and/or the antenna port 10, the DRS pattern shown on the right side of the lower row of FIG. 3a is used as described in the above step 100. The resource mapping mode of the DRS at the antenna port p.
第二种优选的实现方式 Second preferred implementation
在第二种优选的实现方式中,针对天线端口 p,可以使用现有的 LET-A通信标准中为该 天线端口 p定义的 DRS pattern。 DRS映射时, 对冲突 OFDM符号对应的 RE不映射 DRS。 相 应的, 上述步骤 100的具体实现方式可以是: 按照 LTE-A Rel-10***中针对天线端口 p定义 的 DRS资源映射方式, 将需要在该天线端口 p上传输的 DRS映射到上述下行子帧中打孔 OFDM符号对应的 RE之外的用于传输 DRS的 RE上。 其中, 打孔 OFDM符号可以是指, 同一 时隙位置中, 该 DRS资源映射方式确定的存在 DRS映射的 OFDM符号中, 与同步信号传输 子帧中用于传输同步信号的 RE所在的 OFDM符号编号相同的 OFDM符号。或者,打孔 OFDM 符号也可以是指, 同一时隙位置中, 该 DRS资源映射方式确定的存在 DRS映射的 OFDM符 号中, 与同步信号传输子帧中用于传输同步信号的 RE所在的 OFDM符号编号相同和编号相 邻的 OFDM符号。 以图 3a下排左侧所示的常规下行子帧中, 针对天线端口 7的 DRS pattern 为例, 打孔 OFDM符号可以是指, 同一时隙位置 (即均是偶数时隙) 中, 该 DRS pattern确 定的存在 DRS映射的最后一个 OFDM符号, 或者最后两个 OFDM符号。 In a second preferred implementation, for antenna port p, the DRS pattern defined for the antenna port p in the existing LET-A communication standard can be used. When DRS is mapped, the RE corresponding to the conflicting OFDM symbol is not mapped to the DRS. Correspondingly, the specific implementation of the foregoing step 100 may be: mapping the DRS that needs to be transmitted on the antenna port p to the downlink subframe according to the DRS resource mapping manner defined for the antenna port p in the LTE-A Rel-10 system. The RE corresponding to the RE corresponding to the OFDM symbol is used to transmit the DRS. The punctured OFDM symbol may be the OFDM symbol number in the OFDM symbol in the DRS mapping manner determined by the DRS resource mapping manner and the RE used to transmit the synchronization signal in the synchronization signal transmission subframe in the same slot position. The same OFDM symbol. Alternatively, the punctured OFDM symbol may also refer to an OFDM symbol in which the DRS mapping is determined in the DRS resource mapping manner and the RE used to transmit the synchronization signal in the synchronization signal transmission subframe in the same slot position. OFDM symbols numbered the same and numbered adjacent. In the conventional downlink subframe shown on the left in the lower row of FIG. 3a, for the DRS pattern of the antenna port 7, as an example, the punctured OFDM symbol may refer to the same slot position (that is, even slots), the DRS. The pattern determines the last OFDM symbol of the DRS mapping, or the last two OFDM symbols.
其中, LTE-A Rel-10***中针对天线端口 p定义的 DRS资源映射方式具体可以是图 2a~3b所示的 DRS pattern。 具体如下: The DRS resource mapping manner defined for the antenna port p in the LTE-A Rel-10 system may specifically be the DRS pattern shown in FIG. 2a to FIG. 3b. details as follows:
当上述天线端口 P = 5 , 上述下行子帧为使用常规 CP的 FDD***下行子帧时, 打孔 OFDM符号具体是指, 该下行子帧的偶数时隙的最后一个 OFDM符号。 具体的, 使用图 2a 所示的 DRS pattern作为上述步骤 100中所述的 DRS在天线端口 p的资源映射方式, DRS映射 时, 在偶数时隙的 OFDM符号的编号 1=6对应的 RE上不映射 DRS。 When the above-mentioned downlink port is P = 5 and the downlink subframe is a downlink subframe of an FDD system using a conventional CP, the punctured OFDM symbol specifically refers to the last OFDM symbol of the even-numbered slot of the downlink subframe. Specifically, the DRS pattern shown in FIG. 2a is used as the resource mapping manner of the DRS in the antenna port p described in the foregoing step 100, and in the DRS mapping, the RE corresponding to the number 1=6 of the OFDM symbol of the even slot is not Map DRS.
或者, Or,
当上述天线端口 P = 5 , 上述下行子帧为使用扩展 CP的 FDD***下行子帧时, 打孔 OFDM符号具体是指, 该下行子帧的偶数时隙的倒数第二个 OFDM符号。 具体的, 使用图 2b所示的 DRS pattern作为上述步骤 100中所述的 DRS在天线端口 p的资源映射方式, DRS映
射时, 在偶数时隙的 OFDM符号的编号 1=5对应的 RE上不映射 DRS。 When the downlink subframe is P = 5 and the downlink subframe is a downlink subframe of an FDD system using an extended CP, the punctured OFDM symbol specifically refers to a second to last OFDM symbol of an even slot of the downlink subframe. Specifically, the DRS pattern shown in FIG. 2b is used as the resource mapping manner of the DRS in the antenna port p described in the foregoing step 100, and the DRS map is used. At the time of shooting, the DRS is not mapped on the RE corresponding to the number 1=5 of the OFDM symbol of the even slot.
或者, Or,
当上述天线端口 p为 P = 7或 P = 8或 Ρ = 7,···,υ + 6 , 上述下行子帧为 FDD***下行子 帧, 打孔 OFDM符号具体是指, 该下行子帧的偶数时隙的最后两个 OFDM符号。 具体的, 对于使用常规 CP的 FDD***下行子帧, 使用图 3a下排相应天线端口对应的 DRS pattern作为 上述步骤 100中所述的 DRS在天线端口 p的资源映射方式,对于使用扩展 CP的 FDD***下行 子帧, 使用图 3b下排所示的 DRS pattern作为上述步骤 100中所述的 DRS在天线端口 p的资源 映射方式。 DRS映射时, 在偶数时隙的 OFDM符号的编号 1=5和 1=6对应的 RE上不映射 DRS。 When the antenna port p is P= 7 or P= 8 or Ρ=7····, υ+6, the downlink subframe is a downlink subframe of the FDD system, and the punctured OFDM symbol specifically refers to the downlink subframe. The last two OFDM symbols of an even time slot. Specifically, for the downlink subframe of the FDD system using the conventional CP, the DRS pattern corresponding to the corresponding antenna port in the lower row of FIG. 3a is used as the resource mapping manner of the DRS in the antenna port p described in the foregoing step 100, and the FDD is used for the extended CP. The system downlink subframe uses the DRS pattern shown in the lower row of FIG. 3b as the resource mapping manner of the DRS in the antenna port p described in the above step 100. In the DRS mapping, the DRS is not mapped on the REs corresponding to the numbers 1=5 and 1=6 of the OFDM symbols of the even slots.
或者, Or,
当上述天线端口 p为 P = 7或 P = 8或 Ρ = 7"··,υ + 6 , 上述下行子帧为 TDD***常规下行 子帧时, 打孔 OFDM符号具体是指, 该下行子帧的奇数时隙的最后一个或最后两个 OFDM 符号。 具体的, 对于使用常规 CP的 TDD***常规下行子帧, 使用图 3a下排相应天线端口对 应的 DRS pattern作为上述步骤 100中所述的 DRS在天线端口 p的资源映射方式, 对于使用扩 展 CP的 TDD***常规下行子帧, 使用图 3b下排所示的 DRS pattern作为上述步骤 100中所述 的 DRS在天线端口 p的资源映射方式。 DRS映射时, 在奇数时隙的 OFDM符号的编号 1=6对 应的 RE上不映射 DRS; 或者, 在奇数时隙的 OFDM符号的编号 1=5和 1=6对应的 RE上不映射 DRS。 如果打孔 OFDM符号是指, 该下行子帧的奇数时隙的最后一个 OFDM符号, 则可以 仅支持单端口传输 DRS。 When the antenna port p is P = 7 or P = 8 or Ρ = 7"··, υ + 6 , when the downlink subframe is a normal downlink subframe of the TDD system, the punctured OFDM symbol specifically refers to the downlink subframe. The last or last two OFDM symbols of the odd time slot. Specifically, for the conventional downlink subframe of the TDD system using the conventional CP, the DRS pattern corresponding to the corresponding antenna port in the lower row of FIG. 3a is used as the DRS described in the above step 100. In the resource mapping mode of the antenna port p, for the conventional downlink subframe of the TDD system using the extended CP, the DRS pattern shown in the lower row of FIG. 3b is used as the resource mapping manner of the DRS at the antenna port p described in the above step 100. DRS At the time of mapping, the DRS is not mapped on the RE corresponding to the number 1=6 of the OFDM symbol of the odd slot; or the DRS is not mapped on the RE corresponding to the numbers 1=5 and 1=6 of the OFDM symbol of the odd slot. The punctured OFDM symbol means that the last OFDM symbol of the odd time slot of the downlink subframe can only support the single port transmission DRS.
或者, Or,
当上述天线端口 p为 P = 7或 P = 8或 Ρ = 7,···,υ + 6,上述下行子帧为使用常规 CP的 TDD ***特殊子帧, 打孔 OFDM符号具体是指, 该下行子帧的偶数时隙的第三个 OFDM符号, 或者所述 DRS资源映射方式确定的偶数时隙的第三个和第四个 OFDM符号。 具体的, 对于 TDD***特殊子帧配置 3、 4、 8 , 使用图 3a中排相应天线端口对应的 DRS pattern作为上述步 骤 100中所述的 DRS在天线端口 p的资源映射方式, 对于 TDD***特殊子帧配置 1、 2、 6、 7, 使用图 3a上排相应天线端口对应的 DRS pattern作为上述步骤 100中所述的 DRS在天线端口 p 的资源映射方式。 DRS映射时,在偶数时隙的 OFDM符号的编号 1=2对应的 RE上不映射 DRS; 或者, 在偶数时隙的 OFDM符号的编号 1=2和 1=3对应的 RE上不映射 DRS。 When the antenna port p is P= 7 or P= 8 or Ρ =7 ,···, υ+6 , the foregoing downlink subframe is a special subframe of the TDD system using a regular CP, and the punctured OFDM symbol specifically refers to The third OFDM symbol of the even slot of the downlink subframe, or the third and fourth OFDM symbols of the even slot determined by the DRS resource mapping manner. Specifically, for the special subframe configuration 3, 4, and 8 of the TDD system, the DRS pattern corresponding to the corresponding antenna port in FIG. 3a is used as the resource mapping manner of the DRS in the antenna port p described in the foregoing step 100, which is special for the TDD system. The subframe configuration 1, 2, 6, and 7 uses the DRS pattern corresponding to the corresponding antenna port in the row of FIG. 3a as the resource mapping manner of the DRS in the antenna port p described in the above step 100. In the DRS mapping, the DRS is not mapped on the RE corresponding to the number 1=2 of the OFDM symbol of the even slot; or the DRS is not mapped on the RE corresponding to the numbers 1=2 and 1=3 of the OFDM symbol of the even slot.
在第二种优选的实现方式中, 仅支持在 1 ~ 4个天线端口上传输 DRS。 In the second preferred implementation, only DRS is transmitted on 1 to 4 antenna ports.
另外, 还可以釆用其它方式重新定义 DRS在天线端口 p上的资源映射方式。 例如,基于 第二种优选的实现方式, 将其中的各个 DRS pattern中, 打孔 OFDM符号中的 DRS映射关系 删除, 得到新的 DRS。 具体如图 5a~9b所示。 其中, 各图中格子方块即为打孔 OFDM符号中 删除 DRS映射关系的 RE。 In addition, other methods can be used to redefine the resource mapping mode of the DRS on the antenna port p. For example, based on the second preferred implementation manner, the DRS mapping relationship in the punctured OFDM symbol in each of the DRS patterns is deleted to obtain a new DRS. The details are shown in Figures 5a~9b. The trellis in each figure is the RE of the punctured OFDM symbol that deletes the DRS mapping relationship.
第三种优选的实现方式
在第三种优选的实现方式中,针对天线端口 p,可以基于现有的 LET-A通信标准中为该 天线端口 p定义的 DRS pattern, 重新定义新的 DRS pattern。 那么, 上述 DRS在天线端口 p的 资源映射方式是指:通过将 LTE- A Rel- 10***中针对该天线端口 p定义的 DRS资源映射方式 确定的下行子帧中用于传输 DRS的 RE位置进行基于 OFDM符号的平移, 得到的 DRS资源映 射方式。 Third preferred implementation In a third preferred implementation, for antenna port p, a new DRS pattern can be redefined based on the DRS pattern defined for the antenna port p in the existing LET-A communication standard. Then, the resource mapping manner of the DRS in the antenna port p is performed by using the RE location for transmitting the DRS in the downlink subframe determined by the DRS resource mapping manner defined for the antenna port p in the LTE-A Rel-10 system. Based on the translation of the OFDM symbol, the obtained DRS resource mapping manner.
或者, 上述 DRS在天线端口 p的资源映射方式也可以是指: 通过将 LTE-A Rel-10***中 针对该天线端口 p定义的 DRS资源映射方式确定的下行子帧中用于传输 DRS的 RE位置进行 基于 OFDM符号的平移, 并进行基于子载波的平移, 得到的 DRS资源映射方式。 Alternatively, the resource mapping manner of the DRS at the antenna port p may also refer to: an RE for transmitting DRS in a downlink subframe determined by a DRS resource mapping manner defined for the antenna port p in the LTE-A Rel-10 system. The position is based on OFDM symbol-based translation, and subcarrier-based translation is performed to obtain a DRS resource mapping manner.
其中, 对一个 DRS资源映射方式, 可以对至少一个 OFDM符号上的 RE进行平移。 如果 对多个 OFDM符号上的 RE进行平移, 不同 OFDM符号上的 RE在时域上平移的 OFDM符号个 数可以相同或不同, 不同 OFDM符号上的 RE在频域上平移的子载波个数可以相同或不同。 Wherein, for one DRS resource mapping manner, the RE on at least one OFDM symbol can be translated. If the REs on multiple OFDM symbols are translated, the number of OFDM symbols translated by the REs on different OFDM symbols in the time domain may be the same or different, and the number of subcarriers in which the REs on different OFDM symbols are translated in the frequency domain may be Same or different.
针对每个天线端口, 在时域上平移的 OFDM符号个数可以相同, 也可以不同; 在频域 上平移的子载波个数可以相同, 也可以不同。 优选的, 对于 LTE-A Rel-10中使用相同 DRS pattern的天线端口, 在频域上平移的 OFDM符号个数相同, 且在频域上平移的子载波个数 相同。 For each antenna port, the number of OFDM symbols translated in the time domain may be the same or different; the number of subcarriers translated in the frequency domain may be the same or different. Preferably, for an antenna port using the same DRS pattern in LTE-A Rel-10, the number of OFDM symbols translated in the frequency domain is the same, and the number of subcarriers translated in the frequency domain is the same.
以下为几种优选的 DRS pattern: Here are a few preferred DRS patterns:
对于天线端口 p=5 , 如果上述下行子帧为使用常规 CP的 FDD***下行子帧: 仅对图 2a 所示的 DRS pattern中偶数时隙的 OFDM符号的编号为 1=6的用于传输 DRS的 RE向左平移 Kl=4个 OFDM符号, 得到图 10a所示的 DRS pattern; 此时, 天线端口 p=5仅支持 2个 OFDM 符号的传统 PDCCH传输。 或者, 仅对图 2a所示的 DRS pattern中偶数时隙的 OFDM符号的编 号为 1=6的用于传输 DRS的 RE向左平移 Kl=5个 OFDM符号, 得到新的 DRS pattern; 此时, 天线端口 p=5仅支持 1个 OFDM符号的传统 PDCCH传输。 或者, 仅对图 2a所示的 DRS pattern 中偶数时隙的 OFDM符号的编号为 1=6的用于传输 DRS的 RE向右平移 Kl=2个 OFDM符号。 或者,对图 2a所示的 DRS pattern中偶数时隙的 OFDM符号的编号为 1=3的用于传输 DRS的 RE 向左平移 Kl=2个 OFDM符号,同时该对偶数时隙的 OFDM符号的编号为 1=6的用于传输 DRS 的 RE向左平移 K2=3个 OFDM符号。 For the antenna port p=5, if the downlink subframe is a downlink subframe of an FDD system using a regular CP: only the OFDM symbol of the even slot in the DRS pattern shown in FIG. 2a is numbered 1=6 for transmitting DRS. The RE is shifted to the left by K1=4 OFDM symbols, and the DRS pattern shown in FIG. 10a is obtained; at this time, the antenna port p=5 supports only the legacy PDCCH transmission of 2 OFDM symbols. Or, only the RE for transmitting the DRS with the number 1=6 of the OFDM symbols of the even-numbered slots in the DRS pattern shown in FIG. 2a is shifted to the left by K1=5 OFDM symbols, and a new DRS pattern is obtained; The antenna port p=5 supports only legacy PDCCH transmission of 1 OFDM symbol. Alternatively, only the RE for transmitting the DRS, which is numbered 1 = 6 for the OFDM symbols of the even-numbered slots in the DRS pattern shown in Fig. 2a, is shifted to the right by K1 = 2 OFDM symbols. Or, for the OFDM symbol of the even-numbered slot in the DRS pattern shown in FIG. 2a, the RE for transmitting the DRS, which is numbered 1=3, is shifted to the left by K1=2 OFDM symbols, and the OFDM symbol of the even-numbered slot is The RE for transmitting the DRS, numbered 1=6, is shifted to the left by K2=3 OFDM symbols.
对于天线端口 p=5 , 如果上述下行子帧为使用扩展 CP的 FDD***下行子帧: 仅对图 2b 所示的 DRS pattern中偶数时隙的 OFDM符号的编号为 1=4的用于传输 DRS的 RE向左平移 Kl=2个 OFDM符号, 得到图 10b所示的 DRS pattern; 此时, 天线端口 p=5仅支持 2个 OFDM 符号的传统 PDCCH传输。 或者, 仅对图 2b所示的 DRS pattern中偶数时隙的 OFDM符号的编 号为 1=4的用于传输 DRS的 RE向左平移 Kl=3个 OFDM符号, 得到新的 DRS pattern; 此时, 天线端口 p=5仅支持 1个 OFDM符号的传统 PDCCH传输。 For the antenna port p=5, if the above downlink subframe is a downlink subframe of an FDD system using an extended CP: only the OFDM symbol of the even slot in the DRS pattern shown in FIG. 2b is numbered 1=4 for transmitting DRS. The RE is shifted to the left by K1=2 OFDM symbols, and the DRS pattern shown in FIG. 10b is obtained; at this time, the antenna port p=5 supports only the legacy PDCCH transmission of 2 OFDM symbols. Or, only the RE for transmitting the DRS with the number of OFDM symbols of the even-numbered slots in the DRS pattern shown in FIG. 2b is 1=4, and the left D1 is shifted by K1=3 OFDM symbols to obtain a new DRS pattern; The antenna port p=5 supports only legacy PDCCH transmission of 1 OFDM symbol.
对于天线端口 7 ~ 14, 如果上述下行子帧为使用常规 CP的常规下行子帧: 对图 3a下排
左侧所示的 DRS pattern中每列用于传输 DRS的 RE同时向左平移 Kl=3个 OFDM符号,得到图 11a左侧所示的 DRS pattern, 图 11a左侧所示的 DRS pattern即为图 3a中排左侧所示的 DRS pattern, 此时, 相应的天线端口仅支持 2个符号传统 PDCCH传输。 或者, 对图 3a下排左侧 所示的 DRS pattern中每列用于传输 DRS的 RE同时向左平移 Kl=4,得到新的 DRS pattern,此 时,相应的天线端口仅支持 1个符号 legacy PDCCH传输。或者,对图 3a下排左侧所示的 DRS pattern中第一列和第二列用于传输 DRS的 RE向左平移 Kl=3个 OFDM符号,将第三列和第四 列用于传输 DRS的 RE向左平移 Kl= 4个 OFDM符号。 或者, 对图 3a下排左侧所示的 DRS pattern中第一列和第二列用于传输 DRS的 RE向左平移 Kl=4个 OFDM符号,将第三列和第四 列用于传输 DRS的 RE向左平移 Kl= 3个 OFDM符号。 对图 3a下排右侧所示的 DRS pattern中 每列用于传输 DRS的 RE同时向左平移 Kl=3个 OFDM符号, 得到图 11a右侧所示的 DRS pattern , 图 11 a右侧所示的 DRS pattern即为图 3 a中排右侧所示的 DRS pattern , 此时, 相应的 天线端口仅支持 2个符号传统 PDCCH传输。 或者, 对图 3a下排右侧所示的 DRS pattern中每 列用于传输 DRS的 RE同时向左平移 Kl=4, 得到新的 DRS pattern, 此时, 相应的天线端口 仅支持 1个符号 legacy PDCCH传输。 或者, 对图 3a下排右侧所示的 DRS pattern中第一列和 第二列用于传输 DRS的 RE向左平移 Kl=3个 OFDM符号, 将第三列和第四列用于传输 DRS 的 RE向左平移 Kl= 4个 OFDM符号。 或者, 对图 3a下排右侧所示的 DRS pattern中第一列和 第二列用于传输 DRS的 RE向左平移 Kl=4个 OFDM符号, 将第三列和第四列用于传输 DRS 的 RE向左平移 Kl= 3个 OFDM符号。 For antenna ports 7 ~ 14, if the above downlink subframe is a regular downlink subframe using a regular CP: For the lower row of Figure 3a Each column of the DRS pattern shown on the left side is used to transmit the DRS RE and simultaneously shifts K1=3 OFDM symbols to the left to obtain the DRS pattern shown on the left side of FIG. 11a. The DRS pattern shown on the left side of FIG. 11a is a graph. The DRS pattern shown on the left side of row 3a, at this time, the corresponding antenna port supports only 2 symbols of legacy PDCCH transmission. Or, for each column in the DRS pattern shown on the left side of the lower row in FIG. 3a, the RE for transmitting the DRS is simultaneously shifted to the left by K1=4 to obtain a new DRS pattern. At this time, the corresponding antenna port supports only one symbol legacy. PDCCH transmission. Or, for the first column and the second column of the DRS pattern shown on the left side of the lower row of FIG. 3a, the RE for transmitting the DRS is shifted to the left by K1=3 OFDM symbols, and the third column and the fourth column are used for transmitting the DRS. The RE is shifted to the left by K1 = 4 OFDM symbols. Or, for the first column and the second column of the DRS pattern shown in the lower row of the lower row of FIG. 3a, the RE for transmitting the DRS is shifted to the left by K1=4 OFDM symbols, and the third column and the fourth column are used for transmitting the DRS. The RE is shifted to the left by K1 = 3 OFDM symbols. For each of the DRS patterns shown in the lower right row of FIG. 3a, the RE for transmitting the DRS is simultaneously shifted to the left by K1=3 OFDM symbols, and the DRS pattern shown on the right side of FIG. 11a is obtained. The DRS pattern is the DRS pattern shown on the right side of the row in Figure 3a. At this time, the corresponding antenna port supports only 2 symbols of legacy PDCCH transmission. Or, for each column in the DRS pattern shown on the right side of the lower row of FIG. 3a, the RE for transmitting the DRS is simultaneously shifted to the left by K1=4 to obtain a new DRS pattern. At this time, the corresponding antenna port supports only one symbol legacy. PDCCH transmission. Or, for the first column and the second column of the DRS pattern shown in the lower row of the lower row of FIG. 3a, the RE for transmitting the DRS is shifted to the left by K1=3 OFDM symbols, and the third and fourth columns are used for transmitting the DRS. The RE is shifted to the left by K1 = 4 OFDM symbols. Or, for the first column and the second column of the DRS pattern shown in the lower row of the lower row of FIG. 3a, the RE for transmitting the DRS is shifted to the left by K1=4 OFDM symbols, and the third column and the fourth column are used for transmitting the DRS. The RE is shifted to the left by K1 = 3 OFDM symbols.
对于天线端口 7 ~ 14, 如果上述下行子帧为使用常规 CP的常规下行子帧: 也可以支持 对 FDD***下行子帧和 TDD***常规下行子帧釆用不同的平移方式获得不同的 DRS pattern。 例如, 对 FDD***下行子帧, 仅对图 3a下排所示的两个 DRS pattern中第一列和第 二列用于传输 DRS的 RE向左平移 Kl=3或 Kl=4个 OFDM符号, 得到的 DRS pattern作为 FDD ***下行子帧在常规 CP下的 DRS pattern。 对 TDD***常规下行子帧, 仅对图 3a下排所示的 两个 DRS pattern中第三列和第四列用于传输 DRS的 RE向左平移 Kl=3或 Kl=4个 OFDM符 号, 得到的 DRS pattern作为 TDD***常规下行子帧在常规 CP下的 DRS pattern。 For antenna ports 7 to 14, if the downlink subframe is a regular downlink subframe using a conventional CP: it can also support different DRS patterns for different downlink modes of the FDD system downlink subframe and the TDD system regular downlink subframe. For example, for the downlink subframe of the FDD system, only the first column and the second column of the two DRS patterns shown in the lower row of FIG. 3a are used to shift the RE of the DRS to the left by K1=3 or K1=4 OFDM symbols. The obtained DRS pattern is used as the DRS pattern of the downlink subframe of the FDD system under the normal CP. For the conventional downlink subframe of the TDD system, only the third column and the fourth column of the two DRS patterns shown in the lower row of FIG. 3a are used to shift the RE of the DRS to the left by K1=3 or K1=4 OFDM symbols. The DRS pattern is used as the DRS pattern of the regular downlink subframe of the TDD system under the normal CP.
对于天线端口 7 ~ 14, 如果上述下行子帧为使用扩展 CP的常规下行子帧: 对图 3b下侧 所示的 DRS pattern中每列用于传输 DRS的 RE均向左平移 Kl= 3个 OFDM符号, 此时, 天线 端口 7、 8仅支持 1个符号 legacy PDCCH传输, 得到如图 1 lb所示的 DRS pattern。 For the antenna ports 7 to 14, if the above downlink subframe is a regular downlink subframe using the extended CP: the RE for each DSR pattern used for transmitting the DRS in the DRS pattern shown on the lower side of FIG. 3b is shifted to the left by K1=3 OFDM Symbol, at this time, antenna ports 7, 8 support only one symbol legacy PDCCH transmission, resulting in a DRS pattern as shown in Figure 1 lb.
对于天线端口 7 ~ 14, 如果上述下行子帧为使用扩展 CP的常规下行子帧: 也可以支持 对 FDD***下行子帧和 TDD***常规下行子帧釆用不同的平移方式获得不同的 DRS pattern。 例如, 对 FDD***下行子帧, 仅对图 3b下侧所示的 DRS pattern中第一列和第二列 用于传输 DRS的 RE向左平移 Kl=3个 OFDM符号,得到的 DRS pattern作为 FDD***下行子帧 在扩展 CP下的 DRS pattern。 对 TDD***常规下行子帧, 仅对图 3b下侧所示的 DRS pattern中
第三列和第四列用于传输 DRS的 RE向左平移 Kl= 3个 OFDM符号, 得到的 DRS pattern作为 TDD***常规下行子帧在扩展 CP下的 DRS pattern。 For the antenna ports 7 to 14, if the downlink subframe is a regular downlink subframe using the extended CP, it is also possible to support different DRS patterns by using different translation modes for the downlink subframe of the FDD system and the regular downlink subframe of the TDD system. For example, for the downlink subframe of the FDD system, only the first column and the second column of the DRS pattern shown in the lower side of FIG. 3b are used to shift the RE of the DRS to the left by K1=3 OFDM symbols, and the obtained DRS pattern is used as the FDD. The DRS pattern of the system downlink subframe under the extended CP. For the normal downlink subframe of the TDD system, only in the DRS pattern shown on the lower side of Figure 3b. The REs of the third column and the fourth column for transmitting the DRS are shifted to the left by K1=3 OFDM symbols, and the obtained DRS pattern is used as the DRS pattern of the conventional downlink subframe of the TDD system under the extended CP.
对于天线端口 7 ~ 14 , 如果上述下行子帧为使用常规 CP的 TDD***特殊子帧配置 1/2/6/7: 对图 3a上排左侧所示的 DRS pattern中每列 DRS均向右平移 Kl=3 OFDM符号, 得到 如图 12a左侧所示的 DRS pattern, 其中对特殊子帧配置 1和 6, 最后 1列用于传输 DRS的 RE无 效。对图 3a上排右侧所示的 DRS pattern中每列 DRS均向右平移 Kl=3 OFDM符号, 得到如图 12a右侧所示的 DRS pattern, 其中对特殊子帧配置 1和 6, 最后 1列用于传输 DRS的 RE无效。 或者, 对图 3a上排左侧所示的 DRS pattern中的前两列 DRS均向右平移 Kl=l OFDM符号、后 两列 DRS均向右平移 Kl=2 OFDM符号, 得到如图 12b左侧所示的 DRS pattern。 对图 3a上排 右侧所示的 DRS pattern中前两列 DRS均向右平移 Kl=l OFDM符号、后两列 DRS均向右平移 Kl=2 OFDM符号,得到如图 12b右侧所示的 DRS pattern。或者,对图 3a上排左侧所示的 DRS pattern中每列 DRS均向右平移 Kl=2 OFDM符号, 得到新的 DRS pattern。 对图 3a上排右侧所 示的 DRS pattern中每列 DRS均向右平移 Kl=2 OFDM符号, 得到新的 DRS pattem。 或者, 对 图 3a上排左侧所示的 DRS pattern中的前两列 DRS均向左平移 Kl=2 OFDM符号、后两列 DRS 均向右平移 Kl=2 OFDM符号, 得到如图 12c左侧所示的 DRS pattern。 对图 3a上排右侧所示 的 DRS pattern中前两列 DRS均向左平移 Kl=2 OFDM符号、 后两列 DRS均向右平移 Kl=2 OFDM符号, 得到如图 12c右侧所示的 DRS patten 或者, 仅将图 3a上排左侧所示的 DRS pattern中前两列 DRS均向左平移 Kl=2 OFDM符号, 得到如图新的 DRS pattern。 仅将图 3a上 排右侧所示的 DRS pattern中前两列 DRS均向左平移 Kl=2 OFDM符号, 得到新的 DRS pattern。 For antenna ports 7 to 14, if the above downlink subframe is a TDD system special subframe configuration 1/2/6/7 using a normal CP: For each column DRS in the DRS pattern shown on the left side of the upper row of Figure 3a, it is rightward. Translating Kl=3 OFDM symbols yields a DRS pattern as shown on the left side of Figure 12a, where 1 and 6 are configured for special subframes, and the last 1 column of REs for transmitting DRS is invalid. For each column DRS in the DRS pattern shown on the right side of the upper row of FIG. 3a, the K1=3 OFDM symbol is shifted to the right, and the DRS pattern shown in the right side of FIG. 12a is obtained, where 1 and 6 are configured for the special subframe, and finally 1 The RE used to transmit the DRS is invalid. Or, the first two columns of DRS in the DRS pattern shown on the left side of the upper row of FIG. 3a are all shifted to the right by K1=l OFDM symbols, and the last two columns of DRS are all shifted to the right by K1=2 OFDM symbols, and the left side of FIG. 12b is obtained. The DRS pattern shown. For the first two columns of the DRS pattern shown in the right row of the upper row of Figure 3a, the first two columns of DRS are shifted to the right by Kl=l OFDM symbols, and the last two columns of DRS are all shifted to the right by Kl=2 OFDM symbols, which is obtained as shown on the right side of Fig. 12b. DRS pattern. Alternatively, for each column of the DRS in the DRS pattern shown on the left side of the upper row of Figure 3a, the K1=2 OFDM symbol is shifted to the right to obtain a new DRS pattern. For each column of the DRS in the DRS pattern shown on the right side of the upper row of Figure 3a, the K1=2 OFDM symbol is shifted to the right to obtain a new DRS pattem. Or, the first two columns of DRS in the DRS pattern shown on the left side of the row on the left side of FIG. 3a are all shifted to the left by K1=2 OFDM symbols, and the last two columns of DRS are all shifted to the right by K1=2 OFDM symbols, and the left side of FIG. 12c is obtained. The DRS pattern shown. For the first two columns of the DRS pattern shown in the right row of the upper row of Figure 3a, the first two columns of DRS are shifted to the left by K1=2 OFDM symbols, and the last two columns of DRS are all shifted to the right by Kl=2 OFDM symbols, which is obtained as shown on the right side of Fig. 12c. DRS patten Alternatively, only the first two columns of DRS in the DRS pattern shown on the left side of the upper row of Figure 3a are shifted to the left by Kl=2 OFDM symbols, resulting in a new DRS pattern. Only the first two columns of DRS in the DRS pattern shown on the right side of the upper row of Figure 3a are shifted to the left by Kl=2 OFDM symbols to obtain a new DRS pattern.
特别的, 对于天线端口 7 ~ 14, 如果上述下行子帧为使用常规 CP的 TDD***特殊子帧 配置 1和 6, 或者对于任何使用常规 CP的 TDD***特殊子帧配置, 还可以仅对图 3a上排左侧 所示的 DRS pattern中第 1列用于传输 DRS的 RE向左平移 Kl=l或 20FDM符号,得到新的 DRS pattern, 当 Kl=l时天线端口 7~14仅支持 1个符号的传统 PDCCH传输; 仅对图 3a上排右侧所 示的 DRS pattern中第 1列用于传输 DRS的 RE向左平移 Kl=l或 20FDM符号, 得到新的 DRS pattern, 当 Kl=l时天线端口 7~14仅支持 1个符号的传统 PDCCH传输。 或者, 对图 3a上排的 两个 DRS pattern, 还可以对每个 DRS pattern中分别将 4列用于传输 DRS的 RE平移后, 使其 占用第 4、 6、 7、 9个 OFDM符号。 In particular, for antenna ports 7 to 14, if the above downlink subframes are TDD system special subframe configurations 1 and 6 using a regular CP, or for any TDD system special subframe configuration using a conventional CP, only FIG. 3a In the first column of the DRS pattern shown on the left side of the upper row, the RE for transmitting the DRS is shifted to the left by K1=l or 20FDM symbols to obtain a new DRS pattern. When Kl=l, the antenna ports 7~14 only support 1 symbol. Traditional PDCCH transmission; only the RE of the first column of the DRS pattern shown in the upper row of the upper row shown in FIG. 3a for transmitting the DRS is shifted to the left by K1=l or 20FDM symbols to obtain a new DRS pattern, when Kl=l Ports 7~14 support only one symbol of legacy PDCCH transmission. Alternatively, for the two DRS patterns in the row of Figure 3a, the REs of the DRS pattern for each of the DRS patterns can be shifted to occupy the 4th, 6th, 7th, and 9th OFDM symbols.
特别的, 对于天线端口 7 ~ 14, 如果上述下行子帧为使用常规 CP的 TDD***特殊子帧 配置 3/4/8: 对图 3a中排的两个 DRS pattern, 每个 DRS pattern中仅将第一列和第二列用于传 输 DRS的 RE向右平移 Kl=3个 OFDM符号, 得到如图 12d所示的 DRS pattern。 或者, 对图 3a 中排的两个 DRS pattern,每个 DRS pattern中仅将第一列和第二列用于传输 DRS的 RE向右平 移 Kl=l个 OFDM符号, 得到如图 12e所示的 DRS patten 或者, 对图 3a中排的两个 DRS
pattern,每个 DRS pattern中仅将第一列和第二列用于传输 DRS的 RE向右平移 Kl=2个 OFDM 符号, 得到新的 DRS pattem。 或者, 对图 3a中排的两个 DRS pattern, 每个 DRS pattern中仅 将第一列和第二列用于传输 DRS的 RE向左平移 K 1 =2个 OFDM符号, 得到如图 12f所示的 DRS pattern。 In particular, for antenna ports 7 ~ 14, if the above downlink subframe is a TDD system special subframe configuration 3/4/8 using a normal CP: For the two DRS patterns in the row in Fig. 3a, only each DRS pattern will be The REs of the first column and the second column for transmitting the DRS are shifted to the right by K1 = 3 OFDM symbols, resulting in a DRS pattern as shown in Fig. 12d. Or, for the two DRS patterns in the row in FIG. 3a, only the REs of the first column and the second column for transmitting the DRS are shifted to the right by K1=1 OFDM symbols in each DRS pattern, and the result is as shown in FIG. 12e. DRS patten or, two DRSs in the row in Figure 3a Pattern, in each DRS pattern, only the first column and the second column RE for transmitting the DRS are shifted to the right by K1=2 OFDM symbols, and a new DRS device is obtained. Or, for the two DRS patterns in the row in FIG. 3a, only the REs of the first column and the second column for transmitting the DRS are shifted to the left by K 1 = 2 OFDM symbols in each DRS pattern, as shown in FIG. 12f. DRS pattern.
特别的, 对于天线端口 7 ~ 14 , 如果上述下行子帧为使用扩展 CP的 TDD***特殊子帧 配置 1/2/3/5/6: 对图 3b上排的两个 DRS pattern, 将每个 DRS pattern中的每列 DRS的 RE均向 左平移 Kl=l个 OFDM符号,得到如图 12g所示的 DRS pattern。或者,对图 3b上排的两个 DRS pattern, 将每个 DRS pattern中的每列 DRS的 RE均向左平移 Kl=4个 OFDM符号, 得到图 12h 所示的 DRS pattern Specifically, for antenna ports 7 to 14, if the above downlink subframe is a TDD system special subframe configuration using the extended CP, 1/2/3/5/6: for the two DRS patterns in the upper row of FIG. 3b, each will The RE of each column DRS in the DRS pattern is shifted to the left by K1 = 1 OFDM symbols, resulting in a DRS pattern as shown in Fig. 12g. Or, for the two DRS patterns in the upper row of FIG. 3b, the RE of each column DRS in each DRS pattern is shifted to the left by K1=4 OFDM symbols, and the DRS pattern shown in FIG. 12h is obtained.
特别的, 对于天线端口 7 ~ 14 , 如果上述下行子帧为使用常规 CP的 TDD***特殊子帧 配置 9 , 可釆用与使用常规 CP的 TDD***特殊子帧配置 3/4/8相同的 DRS pattern, 例如图 12b 或图 12c中的 pattern, 或者, 釆用与使用常规 CP的 TDD***特殊子帧配置 1/2/6/7相同的 DRS pattern, 例如图 12e或图 12f中的 pattern; 由于特殊子帧配置 9在常规 CP下仅包括 6个 OFDM 符号作为下行传输, 因此釆用上述 DRS pattern时, 仅前 6个 OFDM符号内包含的 DRS RE有 效, 其他 DRS RE被截短。 Specifically, for the antenna ports 7 to 14, if the downlink subframe is a TDD system special subframe configuration 9 using a regular CP, the same DRS as the TDD system special subframe configuration 3/4/8 using the conventional CP can be used. A pattern, such as the pattern in Figure 12b or Figure 12c, or the same DRS pattern as the TDD system special subframe configuration 1/2/6/7 using a conventional CP, such as the pattern in Figure 12e or Figure 12f; The special subframe configuration 9 includes only 6 OFDM symbols as downlink transmissions under the normal CP. Therefore, when the above DRS pattern is used, only the DRS REs included in the first 6 OFDM symbols are valid, and the other DRS REs are truncated.
特别的, 对于天线端口 7 ~ 14 , 如果上述下行子帧为使用扩展 CP的 TDD***特殊子帧 配置 7 ,可釆用与使用扩展 CP的 TDD***特殊子帧配置 1/2/3/5/6相同的 DRS pattern, 例如图 12g或图 12h中的 pattern; 由于特殊子帧配置 7在扩展 CP下仅包括 5个 OFDM符号作为下行传 输, 因此釆用上述 DRS pattern时, 仅前 5个 OFDM符号内包含的 DRS RE有效, 其他 DRS RE 被截短。 Specifically, for the antenna ports 7 to 14, if the downlink subframe is a TDD system special subframe configuration 7 using an extended CP, the TDD system special subframe configuration using the extended CP can be used 1/2/3/5/ 6 same DRS pattern, such as the pattern in FIG. 12g or FIG. 12h; since the special subframe configuration 7 includes only 5 OFDM symbols as downlink transmission under the extended CP, when using the above DRS pattern, only the first 5 OFDM symbols are used. The DRS RE contained in it is valid, and the other DRS REs are truncated.
特别的, 对于天线端口 7 ~ 14 , 如果上述下行子帧为使用常规 CP的 TDD***特殊子帧 配置 0/5 , 可釆用前 3个 OFDM符号中包含 DRS RE的上述任何一个常规 CP下的 DRS pattern, 例如图 12c或图 12中的 pattern;由于特殊子帧配置 0/5在常规 CP下仅包括 3个 OFDM符号作为 下行传输, 因此釆用上述 DRS pattern时, 仅前 3个 OFDM符号内包含的 DRS RE有效, 其他 DRS RE被截短。 Specifically, for the antenna ports 7 to 14, if the downlink subframe is a special subframe configuration 0/5 of the TDD system using the normal CP, the previous three OFDM symbols may be used in any of the above conventional CPs including the DRS RE. The DRS pattern, for example, the pattern in FIG. 12c or FIG. 12; since the special subframe configuration 0/5 includes only 3 OFDM symbols as downlink transmissions under the normal CP, when the above DRS pattern is used, only the first 3 OFDM symbols are used. The included DRS RE is valid and the other DRS REs are truncated.
特别的, 对于天线端口 7 ~ 14 , 如果上述下行子帧为使用扩展 CP的 TDD***特殊子帧 配置 0/4 , 可釆用前 3个 OFDM符号中包含 DRS RE的上述任何一个扩展 CP下的 DRS pattern, 例如图 12h中的 pattern; 由于特殊子帧配置 0/4在扩展 CP下仅包括 3个 OFDM符号作为下行传 输, 因此釆用上述 DRS pattern时, 仅前 3个 OFDM符号内包含的 DRS RE有效, 其他 DRS RE 被截短。 Specifically, for the antenna ports 7 to 14, if the downlink subframe is 0/4 of the TDD system special subframe configuration using the extended CP, the foregoing three OFDM symbols may be included in any of the above extended CPs including the DRS RE. DRS pattern, for example, the pattern in Figure 12h; Since the special subframe configuration 0/4 includes only 3 OFDM symbols as the downlink transmission under the extended CP, when the above DRS pattern is used, only the DRS included in the first 3 OFDM symbols RE is valid and other DRS REs are truncated.
需要说明的是, 釆用上述第一种优选的实现方式或第三种优选的实现方式时, 天线端 口 7、 8、 1 1、 13可以使用相同的 DRS pattern, 天线端口 9、 10、 12、 14可以使用相同的 DRS pattern。 扩展 CP下, 通过正交序列区分在相同资源上发送 DRS的天线端口。 另外, 上述本
发明实施例提供的仅为优选的天线端口复用资源的组合方式, 不排除其他的天线端口复用 资源的组合方式。 It should be noted that, when the first preferred implementation or the third preferred implementation manner is used, the antenna ports 7, 8, 11 and 13 can use the same DRS pattern, and the antenna ports 9, 10, 12, 14 can use the same DRS pattern. Under the extended CP, the antenna port that transmits the DRS on the same resource is distinguished by the orthogonal sequence. In addition, the above The embodiments of the present invention provide only a combination of preferred antenna port multiplexing resources, and do not exclude other combinations of antenna port multiplexing resources.
在 UE侧, 本发明实施例提供的一种 DRS的传输方法如图 13所示, 具体包括如下操作: 步骤 200、 通过天线端口 p接收下行子帧; On the UE side, a method for transmitting a DRS according to an embodiment of the present invention is as shown in FIG. 13 , and specifically includes the following operations: Step 200: Receive a downlink subframe by using an antenna port p.
步骤 210、 按照 DRS在天线端口 p的资源映射方式, 在该下行子帧中用于传输 DRS的 RE 上获取 DRS; 同一时隙位置中, 上述下行子帧中用于传输 DRS的 RE所在的 OFDM符号的编 号, 与同步信号传输子帧中用于传输同步信号的 RE所在的 OFDM符号的编号不同。 Step 210: Obtain a DRS on an RE for transmitting a DRS in the downlink subframe according to a resource mapping manner of the DRS in the antenna port p. In the same slot position, an OFDM in which the RE for transmitting the DRS in the downlink subframe is located The number of the symbol is different from the number of the OFDM symbol in which the RE for transmitting the synchronization signal in the synchronization signal transmission subframe is located.
在 UE侧方法实施例中, 对 DRS在天线端口 p的资源映射方式的描述, 以及对下行子帧 中用于传输 DRS的 RE的描述与上述 e B侧方法实施例中的描述相同, 这里不再赘述。 In the UE side method embodiment, the description of the resource mapping manner of the DRS in the antenna port p, and the description of the RE for transmitting the DRS in the downlink subframe are the same as those described in the foregoing e B side method embodiment, where Let me repeat.
其中, UE侧可以根据 eNB侧的高层信令的配置,也可以根据与 eNB的约定,釆用与 eNB 侧对应的资源映射方式获取 DRS。 The UE side may obtain the DRS according to the configuration of the high layer signaling on the eNB side or the resource mapping manner corresponding to the eNB side according to the agreement with the eNB.
当釆用上述第二种优选的实现方式中描述的 DRS在天线端口 p的资源映射方式时,上述 步骤 210的具体实现方式可以是: 按照 LTE-A Rel-10***中针对该天线端口 p定义的 DRS资 源映射方式,在上述下行子帧中打孔 OFDM符号对应的 RE之外的用于传输 DRS的 RE上获取 DRSo 该打孔 OFDM符号是指, 同一时隙位置中, 该 DRS资源映射方式确定的存在 DRS映 射的 OFDM符号中, 与同步信号传输子帧中用于传输同步信号的 RE所在的 OFDM符号的编 号相同的 OFDM符号, 或者, 打孔 OFDM符号是指, 同一时隙位置中, 该 DRS资源映射方 式确定的存在 DRS映射的 OFDM符号中, 与同步信号传输子帧中用于传输同步信号的 RE所 在的 OFDM符号的编号相同和编号相邻的 OFDM符号。 The specific implementation manner of the foregoing step 210 may be: according to the LTE-A Rel-10 system, the antenna port p is defined according to the resource mapping manner of the DRS in the antenna port p described in the second preferred implementation manner. The DRS resource mapping mode, the DRSo is acquired on the RE for transmitting the DRS other than the RE corresponding to the OFDM symbol in the downlink subframe, and the punctured OFDM symbol refers to the DRS resource mapping manner in the same slot position. In the OFDM symbol of the determined DRS mapping, the OFDM symbol of the same OFDM symbol as the RE for transmitting the synchronization signal in the synchronization signal transmission subframe, or the punctured OFDM symbol means that, in the same slot position, The OFDM symbol of the DRS mapping determined by the DRS resource mapping manner is the same as the OFDM symbol of the OFDM symbol in which the RE for transmitting the synchronization signal in the synchronization signal transmission subframe is located and the OFDM symbol adjacent to the number.
如果上述下行子帧为同步信号传输子帧。 则上述 UE侧的方法中, 在通过天线端口 p接 收下行子帧之前, 还可以包括如下操作: 检测同步信号, 以获得下行同步。 If the downlink subframe is a synchronization signal transmission subframe. In the method of the UE side, before receiving the downlink subframe through the antenna port p, the following operations may be further included: detecting the synchronization signal to obtain downlink synchronization.
本发明实施例还提供一种 DRS的传输装置, 该装置为网络侧装置, 具体可以是 eNB , 或者设置与 eNB上的装置。 其结构如图 14所示, 具体实现结构如下: The embodiment of the present invention further provides a DRS transmission device, where the device is a network side device, and may be an eNB or a device disposed on an eNB. Its structure is shown in Figure 14, the specific implementation structure is as follows:
资源映射模块 1001 , 用于按照 DRS在天线端口 p的资源映射方式, 将需要在天线端口 p 上传输的 DRS映射到下行子帧中用于传输 DRS的 RE上; 同一时隙位置中, 该下行子帧中用 于传输 DRS的 RE所在的 OFDM符号的编号,与同步信号传输子帧中用于传输同步信号的 RE 所在的 OFDM符号的编号不同。 The resource mapping module 1001 is configured to map the DRS that needs to be transmitted on the antenna port p to the RE for transmitting the DRS in the downlink subframe according to the resource mapping manner of the DRS in the antenna port p; in the same slot position, the downlink The number of the OFDM symbol in which the RE for transmitting the DRS in the subframe is located is different from the number of the OFDM symbol in which the RE for transmitting the synchronization signal in the synchronization signal transmission subframe is located.
数据传输模块 1002 , 用于通过上述天线端口 p传输上述下行子帧。 The data transmission module 1002 is configured to transmit the downlink subframe by using the antenna port p.
在网络侧装置的实施例中,对 DRS在天线端口 p的资源映射方式的描述, 以及对下行子 帧中用于传输 DRS的 RE的描述与上述 eNB侧方法实施例中的描述相同, 这里不再赘述。 In the embodiment of the network side device, the description of the resource mapping manner of the DRS in the antenna port p, and the description of the RE for transmitting the DRS in the downlink subframe are the same as those described in the foregoing eNB side method embodiment, where Let me repeat.
当釆用上述第二种优选的实现方式中描述的 DRS在天线端口 p的资源映射方式时,资源 映射模块 1001具体用于:按照 LTE-A Rel-10***中针对上述天线端口 p定义的 DRS资源映射 方式, 将需要在该天线端口 p上传输的 DRS映射到上述下行子帧中打孔 OFDM符号对应的
RE之外的用于传输 DRS的 RE上。 打孔 OFDM符号是指, 同一时隙位置中, 该 DRS资源映射 方式确定的存在 DRS映射的 OFDM符号中, 与同步信号传输子帧中用于传输同步信号的 RE 所在的 OFDM符号的编号相同的 OFDM符号。 或者, 打孔 OFDM符号是指, 同一时隙位置 中, 该 DRS资源映射方式确定的存在 DRS映射的 OFDM符号中, 与同步信号传输子帧中用 于传输同步信号的 RE所在的 OFDM符号的编号相同和编号相邻的 OFDM符号。 The resource mapping module 1001 is specifically configured to: according to the DRS defined in the LTE-A Rel-10 system for the antenna port p, when the resource mapping manner of the DRS in the antenna port p is used in the second preferred implementation manner. In the resource mapping mode, the DRS that needs to be transmitted on the antenna port p is mapped to the corresponding punctured OFDM symbol in the downlink subframe. REs other than RE for transmitting DRS. The punctured OFDM symbol means that, in the same slot position, the OFDM symbol of the DRS mapping determined by the DRS resource mapping manner is the same as the OFDM symbol of the RE for transmitting the synchronization signal in the synchronization signal transmission subframe. OFDM symbol. Or, the punctured OFDM symbol refers to the number of the OFDM symbol in the OFDM symbol in the DRS resource mapping manner determined by the DRS resource mapping manner and the RE used to transmit the synchronization signal in the synchronization signal transmission subframe in the same slot position. The same and numbered adjacent OFDM symbols.
如果上述下行子帧为同步信号传输子帧。 则资源映射模块 1001还可以用于: 将同步信 号映射到上述下行子帧中用于传输同步信号 RE上。 If the downlink subframe is a synchronization signal transmission subframe. The resource mapping module 1001 is further configured to: map the synchronization signal to the downlink subframe for transmitting the synchronization signal RE.
本发明实施例还提供一种 DRS的传输装置, 该装置为 UE侧装置, 具体可以是 UE, 也 可以是设置于 UE上的装置。 其实现结构如图 16所示, 具体实现结构如下: The embodiment of the present invention further provides a DRS transmission device, where the device is a UE side device, and may be a UE, or may be a device disposed on the UE. The implementation structure is shown in Figure 16. The specific implementation structure is as follows:
数据接收模块 2001 , 用于通过天线端口 p接收下行子帧; a data receiving module 2001, configured to receive a downlink subframe by using an antenna port p;
下行参考符号获取模块 2002,用于按照 DRS在天线端口 p的资源映射方式,在上述下行 子帧中用于传输 DRS的 RE上获取 DRS。 同一时隙位置中,该下行子帧中用于传输 DRS的 RE 所在的 OFDM符号的编号, 与同步信号传输子帧中用于传输同步信号的 RE所在的 OFDM符 号的编号不同。 The downlink reference symbol acquisition module 2002 is configured to obtain the DRS on the RE for transmitting the DRS in the downlink subframe according to the resource mapping manner of the DRS in the antenna port p. In the same slot position, the number of the OFDM symbol in which the RE for transmitting the DRS in the downlink subframe is located is different from the number of the OFDM symbol in which the RE for transmitting the synchronization signal in the synchronization signal transmission subframe is located.
在 UE侧装置的实施例中, 对 DRS在天线端口 p的资源映射方式的描述, 以及对下行子 帧中用于传输 DRS的 RE的描述与上述 e B侧方法实施例中的描述相同, 这里不再赘述。 In the embodiment of the UE side device, the description of the resource mapping manner of the DRS in the antenna port p, and the description of the RE for transmitting the DRS in the downlink subframe are the same as those described in the foregoing e B side method embodiment, where No longer.
当釆用上述第二种优选的实现方式中描述的 DRS在天线端口 p的资源映射方式时,下行 参考符号获取模块 2002具体用于:按照 LTE-A Rel-10***中针对所述天线端口 p定义的 DRS 资源映射方式,在上述下行子帧中打孔 OFDM符号对应的 RE之外的用于传输 DRS的 RE上获 取 DRS。 打孔 OFDM符号是指, 同一时隙位置中, 该 DRS资源映射方式确定的存在 DRS映 射的 OFDM符号中, 与同步信号传输子帧中用于传输同步信号的 RE所在的 OFDM符号的编 号相同的 OFDM符号, 或者, 打孔 OFDM符号是指, 同一时隙位置中, 该 DRS资源映射方 式确定的存在 DRS映射的 OFDM符号中, 与同步信号传输子帧中用于传输同步信号的 RE所 在的 OFDM符号的编号相同和编号相邻的 OFDM符号。 The downlink reference symbol acquisition module 2002 is specifically configured to: according to the antenna port p in the LTE-A Rel-10 system, when the resource mapping manner of the DRS in the antenna port p is used in the second preferred implementation manner. The defined DRS resource mapping manner acquires the DRS on the RE for transmitting the DRS other than the RE corresponding to the OFDM symbol in the downlink subframe. The punctured OFDM symbol means that, in the same slot position, the OFDM symbol of the DRS mapping determined by the DRS resource mapping manner is the same as the OFDM symbol of the RE for transmitting the synchronization signal in the synchronization signal transmission subframe. The OFDM symbol, or the punctured OFDM symbol, is the OFDM symbol in the DRS mapping manner determined by the DRS resource mapping manner in the same slot position, and the OFDM in the synchronization signal transmission subframe for transmitting the synchronization signal. Symbols are numbered the same and numbered adjacent to the OFDM symbol.
如果上述下行子帧为同步信号传输子帧。如图 15所示, 上述 UE侧装置还可以包括同步 信号检测模块 2003 , 用于在数据接收模块 2001通过天线端口 p接收下行子帧之前, 检测同 步信号, 以获得下行同步。 If the downlink subframe is a synchronization signal transmission subframe. As shown in FIG. 15, the UE side device may further include a synchronization signal detecting module 2003, configured to detect a synchronization signal before the data receiving module 2001 receives the downlink subframe through the antenna port p, to obtain downlink synchronization.
通过本发明实施例提供的方法及装置, 由于在同一时隙位置中, 下行子帧中用于传输 DRS的 RE所在的 OFDM符号的编号,与同步信号传输子帧中用于传输同步信号的 RE所在的 OFDM符号编号的不同, 保证了下行子帧中 DRS与同步信号的映射资源不重叠。 因此, 针 对非同步的 NCT载波, 应用本发明实施例提供的技术方案时, 可以在同步信号传输子帧中 同时传输 DRS及下行数据, 提高了非同步的 NCT载波的下行传输效率。 又由于本发明实施 例在同步信号传输子帧中可以传输 DRS, 因此可以基于 DRS正常接收下行数据。
本领域内的技术人员应明白, 本发明的实施例可提供为方法、 ***、 或计算机程序产 品。 因此, 本发明可釆用完全硬件实施例、 完全软件实施例、 或结合软件和硬件方面的实 施例的形式。 而且, 本发明可釆用在一个或多个其中包含有计算机可用程序代码的计算机 可用存储介盾 (包括但不限于磁盘存储器、 CD-ROM、 光学存储器等)上实施的计算机程 序产品的形式。 The method and the device provided by the embodiment of the present invention, the number of the OFDM symbol in which the RE for transmitting the DRS in the downlink subframe is located in the same slot position, and the RE used to transmit the synchronization signal in the synchronization signal transmission subframe The OFDM symbol number is different, and the mapping resources of the DRS and the synchronization signal in the downlink subframe are not overlapped. Therefore, when the technical solution provided by the embodiment of the present invention is applied to the non-synchronized NCT carrier, the DRS and the downlink data can be simultaneously transmitted in the synchronization signal transmission subframe, and the downlink transmission efficiency of the asynchronous NCT carrier is improved. Moreover, since the DRS can be transmitted in the synchronization signal transmission subframe in the embodiment of the present invention, the downlink data can be normally received based on the DRS. Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention is in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.
本发明是参照根据本发明实施例的方法、 设备(***) 、 和计算机程序产品的流程图 和 /或方框图来描述的。 应理解可由计算机程序指令实现流程图和 /或方框图中的每一流 程和 /或方框、 以及流程图和 /或方框图中的流程和 /或方框的结合。 可提供这些计算机 程序指令到通用计算机、 专用计算机、 嵌入式处理机或其他可编程数据处理设备的处理器 以产生一个机器, 使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用 于实现在流程图一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的 装置。 The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each process and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方 式工作的计算机可读存储器中, 使得存储在该计算机可读存储器中的指令产生包括指令装 置的制造品, 该指令装置实现在流程图一个流程或多个流程和 /或方框图一个方框或多个 方框中指定的功能。 The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上, 使得在计算机 或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理, 从而在计算机或其他 可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和 /或方框图一个 方框或多个方框中指定的功能的步骤。 These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
尽管已描述了本发明的优选实施例, 但本领域内的技术人员一旦得知了基本创造性概 念, 则可对这些实施例作出另外的变更和修改。 所以, 所附权利要求意欲解释为包括优选 实施例以及落入本发明范围的所有变更和修改。 Although the preferred embodiment of the invention has been described, it will be apparent to those of ordinary skill in the art that <RTIgt; Therefore, the appended claims are intended to be construed as including the preferred embodiments and the modifications
显然, 本领域的技术人员可以对本发明实施例进行各种改动和变型而不脱离本发明实 施例的精神和范围。 这样, 倘若本发明实施例的这些修改和变型属于本发明权利要求及其 等同技术的范围之内, 则本发明也意图包含这些改动和变型在内。
It is apparent that those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, it is intended that the present invention cover the modifications and modifications of the inventions
Claims
1、 一种下行终端专用参考符号 DRS的传输方法, 其特征在于, 包括: A downlink terminal-specific reference symbol DRS transmission method, which is characterized in that:
按照 DRS在天线端口 p的资源映射方式, 将需要在天线端口 p上传输的 DRS映射到下行 子帧中用于传输 DRS的资源单元 RE上; 同一时隙位置中, 所述下行子帧中用于传输 DRS的 RE所在的正交频分复用 OFDM符号的编号,与同步信号传输子帧中用于传输同步信号的 RE 所在的 OFDM符号的编号不同; According to the resource mapping mode of the DRS in the antenna port p, the DRS that needs to be transmitted on the antenna port p is mapped to the resource unit RE for transmitting the DRS in the downlink subframe; in the same slot position, the downlink subframe is used. The number of the orthogonal frequency division multiplexing OFDM symbol in which the RE transmitting the DRS is located is different from the number of the OFDM symbol in which the RE for transmitting the synchronization signal in the synchronization signal transmission subframe is located;
通过所述天线端口 p传输所述下行子帧。 The downlink subframe is transmitted through the antenna port p.
2、 根据权利要求 1所述的方法, 其特征在于, 如果还传输其他下行参考符号, 同一时 隙位置中, 所述下行子帧中用于传输 DRS的 RE所在的 OFDM符号的编号, 与所述其他下行 参考符号传输子帧中用于传输所述其他下行参考符号的 RE所在的 OFDM符号的编号不同; 所述其他下行参考符号包括小区专属参考符号 CRS、 定位用参考符号 PRS、 信道状态信息 测量用参考符号 CSI-RS中的一种或多种组合。 2. The method according to claim 1, wherein if the other downlink reference symbols are also transmitted, the number of the OFDM symbol in which the RE for transmitting the DRS is located in the downlink subframe in the same slot position, and the method The number of the OFDM symbols in which the REs for transmitting the other downlink reference symbols in the other downlink reference symbol transmission subframes are different; the other downlink reference symbols include a cell-specific reference symbol CRS, a positioning reference symbol PRS, and channel state information. One or more combinations of measurement reference symbols CSI-RS.
3、 根据权利要求 1或 2所述的方法, 其特征在于, 所述 DRS在天线端口 p的资源映射方 式是指: The method according to claim 1 or 2, wherein the resource mapping mode of the DRS at the antenna port p is:
从 LTE-A Rel-10***中针对所述天线端口 p定义的至少一种 DRS资源映射方式中选择 的一种 DRS资源映射方式, 同一时隙位置中, 所述选择的 DRS资源映射方式确定的下行子 帧中用于传输 DRS的 RE所在的 OFDM符号的编号与同步信号传输子帧中用于传输同步信 号的 RE所在的 OFDM符号的编号不同; 或者, a DRS resource mapping manner selected from the at least one DRS resource mapping manner defined by the antenna port p in the LTE-A Rel-10 system, where the selected DRS resource mapping manner is determined in the same slot location The number of the OFDM symbol in which the RE for transmitting the DRS in the downlink subframe is located is different from the number of the OFDM symbol in which the RE for transmitting the synchronization signal in the synchronization signal transmission subframe is located; or
通过将 LTE-A Rel-10***中针对所述天线端口 p定义的 DRS资源映射方式确定的下行 子帧中用于传输 DRS的 RE位置进行基于 OFDM符号的平移, 得到的 DRS资源映射方式; 或者, The DRS resource mapping manner obtained by performing OFDM symbol-based translation on the RE position for transmitting the DRS in the downlink subframe determined by the DRS resource mapping manner defined for the antenna port p in the LTE-A Rel-10 system; or ,
通过将 LTE-A Rel-10***中针对所述天线端口 p定义的 DRS资源映射方式确定的下行 子帧中用于传输 DRS的 RE位置进行基于 OFDM符号的平移, 并进行基于子载波的平移, 得 到的 DRS资源映射方式。 Performing OFDM symbol-based translation and performing subcarrier-based translation by using the RE position for transmitting the DRS in the downlink subframe determined by the DRS resource mapping manner defined for the antenna port p in the LTE-A Rel-10 system, The obtained DRS resource mapping method.
4、根据权利要求 3所述的方法, 其特征在于, 当所述 DRS在天线端口 p的资源映射方式 是指从 LTE-A Rel-10***中针对所述天线端口 p定义的至少一种 DRS资源映射方式中选择 的一种 DRS资源映射方式时, 具体包括: The method according to claim 3, wherein when the resource mapping manner of the DRS at the antenna port p refers to at least one DRS defined for the antenna port p from the LTE-A Rel-10 system When a DRS resource mapping mode is selected in the resource mapping mode, the following specifically includes:
如果所述下行子帧是使用常规循环前缀 CP的常规下行子帧, 所述 DRS在天线端口 p的 资源映射方式具体是指, LTE-A Rel-10***中特殊子帧配置 3、 4、 8在常规 CP下的天线端 口 p的 DRS资源映射方式, 所述常规下行子帧是指时分双工 TDD***常规下行子帧, 或者 频分双工 FDD***下行子帧; 其中, 所述天线端口 p为 P = 7或 P = 8或 Ρ = 7,···,υ + 6 , "为If the downlink subframe is a normal downlink subframe that uses the regular cyclic prefix CP, the resource mapping manner of the DRS at the antenna port p specifically refers to the special subframe configuration 3, 4, and 8 in the LTE-A Rel-10 system. The DRS resource mapping mode of the antenna port p in the conventional CP, the conventional downlink subframe refers to a regular downlink subframe of a time division duplex TDD system, or a downlink subframe of a frequency division duplex FDD system; wherein, the antenna port p For P = 7 or P = 8 or Ρ = 7,···, υ + 6 , "for
DRS对应的下行数据的传输层数;
或者, The number of transmission layers of downlink data corresponding to the DRS; or,
如果所述下行子帧是使用常规 CP的 TDD***常规下行子帧, 所述 DRS在天线端口 p的 资源映射方式具体是指, LTE-A-Rel-10***中特殊子帧配置 1、 2、 6、 7在常规 CP下的天线 端口 p的 DRS资源映射方式;其中,所述天线端口 p为 P = 7或 P = 8或 Ρ = 7,···,υ + 6 , v ^ORS 对应的下行数据的传输层数; If the downlink subframe is a conventional downlink subframe of a TDD system using a conventional CP, the resource mapping manner of the DRS at the antenna port p specifically refers to a special subframe configuration in the LTE-A-Rel-10 system. 6, 7 DRS resource mapping mode of the antenna port p under the conventional CP; wherein the antenna port p is P = 7 or P = 8 or Ρ = 7, ..., υ + 6 , v ^ ORS corresponding The number of transmission layers of downlink data;
或者, Or,
如果所述下行子帧是使用扩展 CP的 TDD***常规下行子帧, 所述 DRS在天线端口 p的 资源映射方式具体是指, LTE-A Rel-10***中特殊子帧配置 1、 2、 3、 5、 6在扩展 CP下的 天线端口 p的 DRS资源映射方式; 其中, 所述天线端口 p为 P = 7或 P = 8或 Ρ = 7,···,υ + 6 , ν 为 DRS对应的下行数据的传输层数; If the downlink subframe is a normal downlink subframe of the TDD system using the extended CP, the resource mapping manner of the DRS at the antenna port p specifically refers to the special subframe configuration 1, 2, 3 in the LTE-A Rel-10 system. , 5, 6 DRS resource mapping mode of the antenna port p under the extended CP; wherein the antenna port p is P = 7 or P = 8 or Ρ = 7, ···, υ + 6 , ν is DRS corresponding The number of transmission layers of the downlink data;
或者, Or,
如果所述下行子帧是使用常规 CP的 TDD***特殊子帧, 所述 DRS在天线端口 p的资源 映射方式具体是指, LTE-A Rel-10***中常规下行子帧在常规 CP下的天线端口 p的 DRS资 源映射方式; 其中, 所述天线端口 p为 P = 7或 P = 8或 Ρ = 7,···," + 6 , "为 DRS对应的下行 数据的传输层数。 If the downlink subframe is a TDD system special subframe that uses a conventional CP, the resource mapping manner of the DRS at the antenna port p refers specifically to an antenna of a conventional downlink subframe in a conventional CP in the LTE-A Rel-10 system. DRS port p resource mapping mode; wherein said antenna port p of P = 7, or P = 8 or Ρ = 7, ···, "+ 6," the number of layers for the transmission of downlink data corresponding to the DRS.
5、 根据权利要求 1或 2所述的方法, 其特征在于, 按照 DRS在天线端口 p的资源映射方 式, 将需要在天线端口 p上传输的 DRS映射到下行子帧中用于传输 DRS的 RE上, 具体包括: 按照 LTE-A Rel-10***中针对所述天线端口 p定义的 DRS资源映射方式,将需要在所述 天线端口 p上传输的 DRS映射到所述下行子帧中打孔 OFDM符号对应的 RE之外的用于传输 DRS的 RE上; 所述打孔 OFDM符号是指, 同一时隙位置中, 所述 DRS资源映射方式确定的 存在 DRS映射的 OFDM符号中, 与同步信号传输子帧中用于传输同步信号的 RE所在的 OFDM符号的编号相同的 OFDM符号, 或者, 所述打孔 OFDM符号是指, 同一时隙位置中, 所述 DRS资源映射方式确定的存在 DRS映射的 OFDM符号中, 与同步信号传输子帧中用于 传输同步信号的 RE所在的 OFDM符号的编号相同和编号相邻的 OFDM符号。 The method according to claim 1 or 2, wherein the DRS that needs to be transmitted on the antenna port p is mapped to the RE for transmitting the DRS in the downlink subframe according to the resource mapping manner of the DRS in the antenna port p. Specifically, the method further includes: mapping a DRS that needs to be transmitted on the antenna port p to a punctured OFDM in the downlink subframe according to a DRS resource mapping manner defined in the LTE-A Rel-10 system for the antenna port p The OFDM symbol for transmitting the DRS is not the same as the RE corresponding to the symbol; the punctured OFDM symbol refers to the OFDM symbol in the presence of the DRS mapping determined by the DRS resource mapping manner in the same slot position, and the synchronization signal transmission The OFDM symbol of the OFDM symbol in which the RE for transmitting the synchronization signal is located in the subframe is the same OFDM symbol, or the punctured OFDM symbol refers to the presence of the DRS mapping determined by the DRS resource mapping manner in the same slot position. In the OFDM symbol, an OFDM symbol having the same number and number adjacent to the OFDM symbol in which the RE for transmitting the synchronization signal in the synchronization signal transmission subframe is located.
6、 根据权利要求 5所述的方法, 其特征在于: 6. The method of claim 5, wherein:
当所述天线端口 P = 5 , 所述下行子帧为使用常规 CP的 FDD***下行子帧时, 所述打孔 OFDM符号具体是指, 所述下行子帧的偶数时隙的最后一个 OFDM符号; When the antenna port is P = 5 and the downlink subframe is a downlink subframe of an FDD system using a conventional CP, the punctured OFDM symbol specifically refers to a last OFDM symbol of an even-numbered slot of the downlink subframe. ;
或者, Or,
当所述天线端口 P = 5 , 所述下行子帧为使用扩展 CP的 FDD***下行子帧时, 所述打孔 OFDM符号具体是指, 所述下行子帧的偶数时隙的倒数第二个 OFDM符号; When the antenna port P = 5, the downlink FDD system downlink subframes using an extended CP, the puncturing means specific OFDM symbols, the downlink subframe even slot reciprocal second OFDM symbol;
或者, Or,
当所述天线端口 p为 P = 7或 P = 8或 Ρ = 7,···,υ + 6 , "为 DRS对应的下行数据的传输层 数, 所述下行子帧为 FDD***下行子帧时, 所述打孔 OFDM符号具体是指, 所述下行子帧
的偶数时隙的最后两个 OFDM符号; When the antenna port p is P = 7 or P = 8 or Ρ = 7,···, υ + 6 , "the number of transmission layers of the downlink data corresponding to the DRS , and the downlink subframe is the downlink subframe of the FDD system. The punctured OFDM symbol specifically refers to the downlink subframe. The last two OFDM symbols of the even time slot;
或者, Or,
当所述天线端口 p为 P = 7或 P = 8或 Ρ = 7,···," + 6 , 所述下行子帧为 TDD***常规下行 子帧时, 所述打孔 OFDM符号具体是指, 所述下行子帧的奇数时隙的最后一个或最后两个 OFDM符号; When the antenna port p is P = 7 or P = 8 or Ρ = 7 , ···, " + 6 , when the downlink subframe is a normal downlink subframe of the TDD system, the punctured OFDM symbol specifically refers to And a last or last two OFDM symbols of the odd time slots of the downlink subframe;
或者, Or,
当所述天线端口 p为 P = 7或 P = 8或 Ρ = 7'···'υ + 6,所述下行子帧为使用常规 CP的 TDD ***特殊子帧时,所述打孔 OFDM符号具体是指,所述下行子帧的偶数时隙的第三个 OFDM 符号, 或者所述下行子帧的偶数时隙的第三个和第四个 OFDM符号。 When the antenna port p is P= 7 or P= 8 or Ρ =7 '···' υ + 6 , the downlink subframe is a TDD system special subframe using a regular CP, the punctured OFDM symbol Specifically, the third OFDM symbol of the even time slot of the downlink subframe, or the third and fourth OFDM symbols of the even time slot of the downlink subframe.
7、 根据权利要求 1或 2所述的方法, 其特征在于, 所述下行子帧为同步信号传输子帧; 和 /或, The method according to claim 1 or 2, wherein the downlink subframe is a synchronization signal transmission subframe; and/or,
所述下行子帧中用于传输 DRS的 RE所在的资源块 RB , 具体包括: The resource block RB of the RE for transmitting the DRS in the downlink subframe includes:
所述下行子帧中下行数据传输所在的 RB集合中的所有 RB, 其中, 所述下行子帧中下 行数据传输所在的 RB集合为下行可用带宽内的任一位置的 RB集合; 或者, All the RBs in the RB set in which the downlink data transmission is performed in the downlink subframe, where the RB set in which the downlink data transmission is performed in the downlink subframe is an RB set at any position within the downlink available bandwidth; or
所述下行子帧中下行数据传输所在的 RB集合中与同步信号传输子帧中用于传输同步 信号的 RE所在的 RB编号相同的 RB。 The RB of the RB set in which the downlink data transmission is located in the downlink subframe is the same as the RB number of the RE for transmitting the synchronization signal in the synchronization signal transmission subframe.
8、 一种下行终端专用参考符号 DRS的传输方法, 其特征在于, 包括: 8. A downlink terminal-specific reference symbol DRS transmission method, which is characterized in that:
通过天线端口 p接收下行子帧; Receiving a downlink subframe through the antenna port p;
按照 DRS在天线端口 p的资源映射方式, 在所述下行子帧中用于传输 DRS的资源单元 RE上获取 DRS; 同一时隙位置中,所述下行子帧中用于传输 DRS的 RE所在的正交频分复用 OFDM符号的编号, 与同步信号传输子帧中用于传输同步信号的 RE所在的 OFDM符号的编 号不同。 Obtaining a DRS on a resource unit RE for transmitting a DRS in the downlink subframe according to a resource mapping manner of the DRS in the antenna port p; in the same slot position, where the RE for transmitting the DRS in the downlink subframe is located The number of the Orthogonal Frequency Division Multiplexing OFDM symbol is different from the number of the OFDM symbol in which the RE for transmitting the synchronization signal in the synchronization signal transmission subframe is located.
9、 根据权利要求 8所述的方法, 其特征在于, 如果还存在其他下行参考符号的传输, 同一时隙位置中, 所述下行子帧中用于传输 DRS的 RE所在的 OFDM符号的编号, 与所述其 他下行参考符号传输子帧中用于传输所述其他下行参考符号的 RE所在的 OFDM符号的编 号不同; 所述其他下行参考符号包括小区专属参考符号 CRS、 定位用参考符号 PRS、 信道 状态信息测量用参考符号 CSI-RS中的一种或多种组合。 The method according to claim 8, wherein, if there is further transmission of the downlink reference symbol, the number of the OFDM symbol in which the RE for transmitting the DRS is located in the downlink subframe in the same slot position, Different from the number of the OFDM symbol in which the RE for transmitting the other downlink reference symbol in the other downlink reference symbol transmission subframe is located; the other downlink reference symbols include a cell-specific reference symbol CRS, a positioning reference symbol PRS, and a channel The status information is measured by one or more combinations of reference symbols CSI-RS.
10、根据权利要求 8或 9所述的方法, 其特征在于, 所述 DRS在天线端口 p的资源映射方 式是指: The method according to claim 8 or 9, wherein the resource mapping mode of the DRS at the antenna port p is:
从 LTE-A Rel-10***中针对所述天线端口 p定义的至少一种 DRS资源映射方式中选择 的一种 DRS资源映射方式, 同一时隙位置中, 所述选择的 DRS资源映射方式确定的下行子 帧中用于传输 DRS的 RE所在的 OFDM符号的编号与同步信号传输子帧中用于传输同步信 号的 RE所在的 OFDM符号的编号不同; 或者,
通过将 LTE-A Rel-10***中针对所述天线端口 p定义的 DRS资源映射方式确定的下行 子帧中用于传输 DRS的 RE位置进行基于 OFDM符号的平移, 得到的 DRS资源映射方式; 或者, a DRS resource mapping manner selected from the at least one DRS resource mapping manner defined by the antenna port p in the LTE-A Rel-10 system, where the selected DRS resource mapping manner is determined in the same slot location The number of the OFDM symbol in which the RE for transmitting the DRS in the downlink subframe is located is different from the number of the OFDM symbol in which the RE for transmitting the synchronization signal in the synchronization signal transmission subframe is located; or The DRS resource mapping manner obtained by performing OFDM symbol-based translation on the RE position for transmitting the DRS in the downlink subframe determined by the DRS resource mapping manner defined for the antenna port p in the LTE-A Rel-10 system; or ,
通过将 LTE-A Rel-10***中针对所述天线端口 p定义的 DRS资源映射方式确定的下行 子帧中用于传输 DRS的 RE位置进行基于 OFDM符号的平移, 并进行基于子载波的平移, 得 到的 DRS资源映射方式。 Performing OFDM symbol-based translation and performing subcarrier-based translation by using the RE position for transmitting the DRS in the downlink subframe determined by the DRS resource mapping manner defined for the antenna port p in the LTE-A Rel-10 system, The obtained DRS resource mapping method.
11、根据权利要求 10所述的方法, 其特征在于, 当所述 DRS在天线端口 p的资源映射方 式是指从 LTE- A Rel- 10***中针对所述天线端口 p定义的至少一种 DRS资源映射方式中选 择的一种 DRS资源映射方式时, 具体包括: The method according to claim 10, wherein when the resource mapping manner of the DRS at the antenna port p refers to at least one DRS defined for the antenna port p from the LTE-Res-10 system When a DRS resource mapping mode is selected in the resource mapping mode, the following specifically includes:
如果所述下行子帧是使用常规循环前缀 CP的常规下行子帧, 所述 DRS在天线端口 p的 资源映射方式具体是指, LTE-A Rel-10***中特殊子帧配置 3、 4、 8在常规 CP下的天线端 口 p的 DRS资源映射方式, 所述常规下行子帧是指时分双工 TDD***常规下行子帧, 或者 频分双工 FDD***下行子帧; 其中, 所述天线端口 p为 P = 7或 P = 8或 Ρ = 7,···,υ + 6 , "为If the downlink subframe is a normal downlink subframe that uses the regular cyclic prefix CP, the resource mapping manner of the DRS at the antenna port p specifically refers to the special subframe configuration 3, 4, and 8 in the LTE-A Rel-10 system. The DRS resource mapping mode of the antenna port p in the conventional CP, the conventional downlink subframe refers to a regular downlink subframe of a time division duplex TDD system, or a downlink subframe of a frequency division duplex FDD system; wherein, the antenna port p For P = 7 or P = 8 or Ρ = 7,···, υ + 6 , "for
DRS对应的下行数据的传输层数; The number of transmission layers of downlink data corresponding to the DRS;
或者, Or,
如果所述下行子帧是使用常规 CP的 TDD***常规下行子帧, 所述 DRS在天线端口 p的 资源映射方式具体是指, LTE-A-Rel-10***中特殊子帧配置 1、 2、 6、 7在常规 CP下的天线 端口 p的 DRS资源映射方式;其中,所述天线端口 p为 P = 7或 P = 8或 Ρ = 7,···,υ + 6 , v ^ORS 对应的下行数据的传输层数; If the downlink subframe is a conventional downlink subframe of a TDD system using a conventional CP, the resource mapping manner of the DRS at the antenna port p specifically refers to a special subframe configuration in the LTE-A-Rel-10 system. 6, 7 DRS resource mapping mode of the antenna port p under the conventional CP; wherein the antenna port p is P = 7 or P = 8 or Ρ = 7, ..., υ + 6 , v ^ ORS corresponding The number of transmission layers of downlink data;
或者, Or,
如果所述下行子帧是使用扩展 CP的 TDD***常规下行子帧, 所述 DRS在天线端口 p的 资源映射方式具体是指, LTE-A Rel-10***中特殊子帧配置 1、 2、 3、 5、 6在扩展 CP下的 天线端口 p的 DRS资源映射方式; 其中, 所述天线端口 p为 P = 7或 P = 8或 Ρ = 7,···,υ + 6 , ν 为 DRS对应的下行数据的传输层数; If the downlink subframe is a normal downlink subframe of the TDD system using the extended CP, the resource mapping manner of the DRS at the antenna port p specifically refers to the special subframe configuration 1, 2, 3 in the LTE-A Rel-10 system. , 5, 6 DRS resource mapping mode of the antenna port p under the extended CP; wherein the antenna port p is P = 7 or P = 8 or Ρ = 7, ···, υ + 6 , ν is DRS corresponding The number of transmission layers of the downlink data;
或者, Or,
如果所述下行子帧是使用常规 CP的 TDD***特殊子帧, 所述 DRS在天线端口 p的资源 映射方式具体是指, LTE-A Rel-10***中常规下行子帧在常规 CP下的天线端口 p的 DRS资 源映射方式; 其中, 所述天线端口 p为 P = 7或 P = 8或 Ρ = 7,···," + 6 , "为 DRS对应的下行 数据的传输层数。 If the downlink subframe is a TDD system special subframe that uses a conventional CP, the resource mapping manner of the DRS at the antenna port p refers specifically to an antenna of a conventional downlink subframe in a conventional CP in the LTE-A Rel-10 system. DRS port p resource mapping mode; wherein said antenna port p of P = 7, or P = 8 or Ρ = 7, ···, "+ 6," the number of layers for the transmission of downlink data corresponding to the DRS.
12、根据权利要求 8或 9所述的方法, 其特征在于, 按照 DRS在天线端口 p的资源映射方 式, 在所述下行子帧中用于传输 DRS的 RE上获取 DRS, 具体包括: The method according to claim 8 or 9, wherein the obtaining the DRS on the RE for transmitting the DRS in the downlink subframe according to the resource mapping mode of the DRS in the antenna port p includes:
按照 LTE-A Rel-10***中针对所述天线端口 p定义的 DRS资源映射方式,在所述下行子 帧中打孔 OFDM符号对应的 RE之外的用于传输 DRS的 RE上获取 DRS; 所述打孔 OFDM符号
是指, 同一时隙位置中, 所述 DRS资源映射方式确定的存在 DRS映射的 OFDM符号中, 与 同步信号传输子帧中用于传输同步信号的 RE所在的 OFDM符号的编号相同的 OFDM符号, 或者,所述打孔 OFDM符号是指, 同一时隙位置中,所述 DRS资源映射方式确定的存在 DRS 映射的 OFDM符号中, 与同步信号传输子帧中用于传输同步信号的 RE所在的 OFDM符号的 编号相同和编号相邻的 OFDM符号。 Obtaining a DRS on an RE for transmitting a DRS other than an RE corresponding to an OFDM symbol in the downlink subframe according to a DRS resource mapping manner defined for the antenna port p in the LTE-A Rel-10 system; Punctured OFDM symbol The OFDM symbol of the OFDM symbol in the DRS resource mapping manner determined by the DRS resource mapping manner and the same as the OFDM symbol in the synchronization signal transmission subframe in which the RE for transmitting the synchronization signal is located, in the same slot position, Or, the punctured OFDM symbol refers to an OFDM symbol in which the DRS mapping exists in the DRS resource mapping manner and the OFDM in which the synchronization signal is transmitted in the synchronization signal transmission subframe in the same slot position. Symbols are numbered the same and numbered adjacent to the OFDM symbol.
13、 根据权利要求 12所述的方法, 其特征在于: 13. The method of claim 12, wherein:
当所述天线端口 P = 5 , 所述下行子帧为使用常规 CP的 FDD***下行子帧时, 所述打孔 OFDM符号具体是指, 所述下行子帧的偶数时隙的最后一个 OFDM符号; When the antenna port is P = 5 and the downlink subframe is a downlink subframe of an FDD system using a conventional CP, the punctured OFDM symbol specifically refers to a last OFDM symbol of an even-numbered slot of the downlink subframe. ;
或者, Or,
当所述天线端口 P = 5 , 所述下行子帧为使用扩展 CP的 FDD***下行子帧时, 所述打孔When the antenna port is P= 5 and the downlink subframe is a downlink subframe of an FDD system using an extended CP, the punching
OFDM符号具体是指, 所述下行子帧的偶数时隙的倒数第二个 OFDM符号; The OFDM symbol specifically refers to a second to last OFDM symbol of an even time slot of the downlink subframe;
或者, Or,
当所述天线端口 p为 P = 7或 P = 8或 Ρ = 7,···,υ + 6 , "为 DRS对应的下行数据的传输层 数, 所述下行子帧为 FDD***下行子帧时, 所述打孔 OFDM符号具体是指, 所述下行子帧 的偶数时隙的最后两个 OFDM符号; When the antenna port p is P = 7 or P = 8 or Ρ = 7,···, υ + 6 , "the number of transmission layers of the downlink data corresponding to the DRS , and the downlink subframe is the downlink subframe of the FDD system. The punctured OFDM symbol specifically refers to the last two OFDM symbols of the even time slots of the downlink subframe;
或者, Or,
当所述天线端口 p为 P = 7或 P = 8或 Ρ = 7,···," + 6 , 所述下行子帧为 TDD***常规下行 子帧时, 所述打孔 OFDM符号具体是指, 所述下行子帧的奇数时隙的最后一个或最后两个 OFDM符号; When the antenna port p is P = 7 or P = 8 or Ρ = 7 , ···, " + 6 , when the downlink subframe is a normal downlink subframe of the TDD system, the punctured OFDM symbol specifically refers to And a last or last two OFDM symbols of the odd time slots of the downlink subframe;
或者, Or,
当所述天线端口 p为 P = 7或 P = 8或 Ρ = 7'···'υ + 6,所述下行子帧为使用常规 CP的 TDD ***特殊子帧时,所述打孔 OFDM符号具体是指,所述下行子帧的偶数时隙的第三个 OFDM 符号, 或者所述下行子帧的偶数时隙的第三个和第四个 OFDM符号。 When the antenna port p is P= 7 or P= 8 or Ρ =7 '···' υ + 6 , the downlink subframe is a TDD system special subframe using a regular CP, the punctured OFDM symbol Specifically, the third OFDM symbol of the even time slot of the downlink subframe, or the third and fourth OFDM symbols of the even time slot of the downlink subframe.
14、根据权利要求 8或 9所述的方法, 其特征在于, 所述下行子帧为同步信号传输子帧; 和 /或 , The method according to claim 8 or 9, wherein the downlink subframe is a synchronization signal transmission subframe; and/or
所述下行子帧中用于传输 DRS的 RE所在的资源块 RB , 具体包括: The resource block RB of the RE for transmitting the DRS in the downlink subframe includes:
所述下行子帧中下行数据传输所在的 RB集合中的所有 RB, 其中, 所述下行子帧中下 行数据传输所在的 RB集合为下行可用带宽内的任一位置的 RB集合; 或者, All the RBs in the RB set in which the downlink data transmission is performed in the downlink subframe, where the RB set in which the downlink data transmission is performed in the downlink subframe is an RB set at any position within the downlink available bandwidth; or
所述下行子帧中下行数据传输所在的 RB集合中与同步信号传输子帧中用于传输同步 信号的 RE所在的 RB编号相同的 RB。 The RB of the RB set in which the downlink data transmission is located in the downlink subframe is the same as the RB number of the RE for transmitting the synchronization signal in the synchronization signal transmission subframe.
15、 一种下行终端专用参考符号 DRS的传输装置, 其特征在于, 包括: A downlink terminal-specific reference symbol DRS transmission device, comprising:
资源映射模块, 用于按照 DRS在天线端口 p的资源映射方式, 将需要在天线端口 p上传 输的 DRS映射到下行子帧中用于传输 DRS的资源单元 RE上; 同一时隙位置中, 所述下行子
帧中用于传输 DRS的 RE所在的正交频分复用 OFDM符号的编号, 与同步信号传输子帧中用 于传输同步信号的 RE所在的 OFDM符号的编号不同; a resource mapping module, configured to map a DRS that needs to be transmitted on the antenna port p to a resource unit RE for transmitting DRS in a downlink subframe according to a resource mapping manner of the DRS in the antenna port p; Downstream The number of the orthogonal frequency division multiplexing OFDM symbol in which the RE for transmitting the DRS in the frame is located is different from the number of the OFDM symbol in which the RE for transmitting the synchronization signal in the synchronization signal transmission subframe is located;
数据传输模块, 用于通过所述天线端口 p传输所述下行子帧。 And a data transmission module, configured to transmit the downlink subframe by using the antenna port p.
16、 根据权利要求 15所述的装置, 其特征在于, 如果还传输其他下行参考符号, 同一 时隙位置中, 所述下行子帧中用于传输 DRS的 RE所在的 OFDM符号的编号, 与所述其他下 行参考符号传输子帧中用于传输所述其他下行参考符号的 RE所在的 OFDM符号的编号不 同; 所述其他下行参考符号包括小区专属参考符号 CRS、 定位用参考符号 PRS、 信道状态 信息测量用参考符号 CSI-RS中的一种或多种组合。 The device according to claim 15, wherein if the other downlink reference symbols are also transmitted, the number of the OFDM symbol in which the RE for transmitting the DRS in the downlink subframe is located in the same slot position, The number of the OFDM symbols in which the REs for transmitting the other downlink reference symbols in the other downlink reference symbol transmission subframes are different; the other downlink reference symbols include a cell-specific reference symbol CRS, a positioning reference symbol PRS, and channel state information. One or more combinations of measurement reference symbols CSI-RS.
17、根据权利要求 15或 16所述的装置,其特征在于,所述资源映射模块使用的所述 DRS 在天线端口 p的资源映射方式是指: The device according to claim 15 or 16, wherein the resource mapping manner of the DRS used by the resource mapping module at the antenna port p is:
从 LTE-A Rel-10***中针对所述天线端口 p定义的至少一种 DRS资源映射方式中选择 的一种 DRS资源映射方式, 同一时隙位置中, 所述选择的 DRS资源映射方式确定的下行子 帧中用于传输 DRS的 RE所在的 OFDM符号的编号与同步信号传输子帧中用于传输同步信 号的 RE所在的 OFDM符号的编号不同; 或者, a DRS resource mapping manner selected from the at least one DRS resource mapping manner defined by the antenna port p in the LTE-A Rel-10 system, where the selected DRS resource mapping manner is determined in the same slot location The number of the OFDM symbol in which the RE for transmitting the DRS in the downlink subframe is located is different from the number of the OFDM symbol in which the RE for transmitting the synchronization signal in the synchronization signal transmission subframe is located; or
通过将 LTE-A Rel-10***中针对所述天线端口 p定义的 DRS资源映射方式确定的下行 子帧中用于传输 DRS的 RE位置进行基于 OFDM符号的平移, 得到的 DRS资源映射方式; 或者, The DRS resource mapping manner obtained by performing OFDM symbol-based translation on the RE position for transmitting the DRS in the downlink subframe determined by the DRS resource mapping manner defined for the antenna port p in the LTE-A Rel-10 system; or ,
通过将 LTE-A Rel-10***中针对所述天线端口 p定义的 DRS资源映射方式确定的下行 子帧中用于传输 DRS的 RE位置进行基于 OFDM符号的平移, 并进行基于子载波的平移, 得 到的 DRS资源映射方式。 Performing OFDM symbol-based translation and performing subcarrier-based translation by using the RE position for transmitting the DRS in the downlink subframe determined by the DRS resource mapping manner defined for the antenna port p in the LTE-A Rel-10 system, The obtained DRS resource mapping method.
18、 根据权利要求 17所述的装置, 其特征在于, 当所述资源映射模块使用的所述 DRS 在天线端口 p的资源映射方式是指从 LTE-A Rel-10***中针对所述天线端口 p定义的至少一 种 DRS资源映射方式中选择的一种 DRS资源映射方式时, 具体包括: The device according to claim 17, wherein the resource mapping manner of the DRS at the antenna port p used by the resource mapping module refers to the antenna port from the LTE-A Rel-10 system. When the DRS resource mapping mode selected in the at least one DRS resource mapping mode defined by the p, the specific one includes:
如果所述下行子帧是使用常规循环前缀 CP的常规下行子帧,所述资源映射模块使用的 所述 DRS在天线端口 p的资源映射方式具体是指, LTE-A Rel-10***中特殊子帧配置 3、 4、 If the downlink subframe is a normal downlink subframe that uses a regular cyclic prefix CP, the resource mapping manner of the DRS used by the resource mapping module at the antenna port p specifically refers to a special subframe in the LTE-A Rel-10 system. Frame configuration 3, 4,
8在常规 CP下的天线端口 p的 DRS资源映射方式,所述常规下行子帧是指时分双工 TDD*** 常规下行子帧, 或者频分双工 FDD***下行子帧; 其中, 所述天线端口 p为 P = 7或 P = 8或 ρ = Ί, ..., υ + 6 , 为 DRS对应的下行数据的传输层数; 8 DRS resource mapping mode of the antenna port p in the conventional CP, the conventional downlink subframe refers to a regular downlink subframe of a time division duplex TDD system, or a downlink subframe of a frequency division duplex FDD system; wherein the antenna port p is P = 7 or P = 8 or ρ = Ί, ..., υ + 6 , which is the number of transmission layers of the downlink data corresponding to the DRS ;
或者, Or,
如果所述下行子帧是使用常规 CP的 TDD***常规下行子帧,所述资源映射模块使用的 所述 DRS在天线端口 p的资源映射方式具体是指 , LTE-A-Rel-10***中特殊子帧配置 1、 2、 If the downlink subframe is a conventional downlink subframe of a TDD system using a conventional CP, the resource mapping manner of the DRS in the antenna port p used by the resource mapping module specifically refers to a special in the LTE-A-Rel-10 system. Subframe configuration 1, 2
6、 7在常规 CP下的天线端口 p的 DRS资源映射方式;其中,所述天线端口 p为 P = 7或 P = 8或 ρ = Ί, ..., υ + 6 , 为 DRS对应的下行数据的传输层数;
或者, 6, 7 DRS resource mapping mode of the antenna port p under the conventional CP; wherein the antenna port p is P = 7 or P = 8 or ρ = Ί, ..., υ + 6 , which is the downlink corresponding to the DRS The number of transmission layers of data; or,
如果所述下行子帧是使用扩展 CP的 TDD***常规下行子帧,所述资源映射模块使用的 所述 DRS在天线端口 p的资源映射方式具体是指, LTE-A Rel-10***中特殊子帧配置 1、 2、 If the downlink subframe is a conventional downlink subframe of the TDD system using the extended CP, the resource mapping manner of the DRS in the antenna port p used by the resource mapping module specifically refers to a special subframe in the LTE-A Rel-10 system. Frame configuration 1, 2
3、 5、 6在扩展 CP下的天线端口 p的 DRS资源映射方式;其中,所述天线端口 p为 P = 7或 p = Ρ = .., υ + 6 , 为 DRS对应的下行数据的传输层数; 3, 5, 6 DRS resource mapping mode of the antenna port p under the extended CP; wherein the antenna port p is P = 7 or p = Ρ = .., υ + 6 , which is the downlink data transmission corresponding to the DRS Number of layers
或者, Or,
如果所述下行子帧是使用常规 CP的 TDD***特殊子帧,所述资源映射模块使用的所述 DRS在天线端口 p的资源映射方式具体是指, LTE-A Rel-10***中常规下行子帧在常规 CP 下的天线端口 p的 DRS资源映射方式;其中,所述天线端口 p为 P = 7或 P = 8或 Ρ = 7,···,υ + ό , 为 DRS对应的下行数据的传输层数。 If the downlink subframe is a TDD system special subframe that uses a normal CP, the resource mapping manner of the DRS in the antenna port p used by the resource mapping module specifically refers to a conventional downlink in the LTE-A Rel-10 system. The DRS resource mapping mode of the antenna port p of the frame in the conventional CP; wherein the antenna port p is P = 7 or P = 8 or Ρ = 7,···, υ + ό , which is the downlink data corresponding to the DRS The number of transport layers.
19、 根据权利要求 15或 16所述的装置, 其特征在于, 所述资源映射模块具体用于: 按照 LTE-A Rel-10***中针对所述天线端口 p定义的 DRS资源映射方式,将需要在所述 天线端口 p上传输的 DRS映射到所述下行子帧中打孔 OFDM符号对应的 RE之外的用于传输 DRS的 RE上; 所述打孔 OFDM符号是指, 同一时隙位置中, 所述 DRS资源映射方式确定的 存在 DRS映射的 OFDM符号中, 与同步信号传输子帧中用于传输同步信号的 RE所在的 OFDM符号的编号相同的 OFDM符号, 或者, 所述打孔 OFDM符号是指, 同一时隙位置中, 所述 DRS资源映射方式确定的存在 DRS映射的 OFDM符号中, 与同步信号传输子帧中用于 传输同步信号的 RE所在的 OFDM符号的编号相同和编号相邻的 OFDM符号。 The device according to claim 15 or 16, wherein the resource mapping module is specifically configured to: according to a DRS resource mapping manner defined by the antenna port p in the LTE-A Rel-10 system, The DRS transmitted on the antenna port p is mapped to the RE for transmitting the DRS other than the RE corresponding to the punctured OFDM symbol in the downlink subframe; the punctured OFDM symbol refers to the same slot position. And the OFDM symbol of the OFDM symbol in which the DRS mapping is determined by the DRS resource mapping manner, and the OFDM symbol of the OFDM symbol in which the RE for transmitting the synchronization signal in the synchronization signal transmission subframe is located, or the punctured OFDM symbol In the same slot position, the OFDM symbol in the DRS mapping determined by the DRS resource mapping manner is the same as the number of the OFDM symbol in which the RE for transmitting the synchronization signal in the synchronization signal transmission subframe is located and adjacent to the number. OFDM symbol.
20、 根据权利要求 19所述的装置, 其特征在于: 20. Apparatus according to claim 19 wherein:
当所述天线端口 P = 5 , 所述下行子帧为使用常规 CP的 FDD***下行子帧时, 所述打孔When the antenna port is P= 5 and the downlink subframe is a downlink subframe of an FDD system using a regular CP, the punching
OFDM符号具体是指, 所述 DRS资源映射方式确定的偶数时隙的最后一个 OFDM符号; 或者, The OFDM symbol specifically refers to the last OFDM symbol of the even time slot determined by the DRS resource mapping manner; or
当所述天线端口 P = 5 , 所述下行子帧为使用扩展 CP的 FDD***下行子帧时, 所述打孔 OFDM符号具体是指, 所述 DRS资源映射方式确定的偶数时隙的倒数第二个 OFDM符号; 或者, When the antenna port P = 5, the downlink FDD system downlink subframes using an extended CP, the puncturing means specific OFDM symbol, the DRS even-numbered time slot determined reciprocal resource mapping manner Two OFDM symbols; or,
当所述天线端口 p为 P = 7或 P = 8或 Ρ = 7,···,υ + 6 , "为 DRS对应的下行数据的传输层 数, 所述下行子帧为 FDD***下行子帧时, 所述打孔 OFDM符号具体是指, 所述下行子帧 的偶数时隙的最后两个 OFDM符号; When the antenna port p is P = 7 or P = 8 or Ρ = 7,···, υ + 6 , "the number of transmission layers of the downlink data corresponding to the DRS , and the downlink subframe is the downlink subframe of the FDD system. The punctured OFDM symbol specifically refers to the last two OFDM symbols of the even time slots of the downlink subframe;
或者, Or,
当所述天线端口 p为 P = 7或 P = 8或 Ρ = 7,···,υ + 6 , 所述下行子帧为 TDD***常规下行 子帧时, 所述打孔 OFDM符号具体是指, 所述下行子帧的奇数时隙的最后一个或最后两个 OFDM符号; When the antenna port p is P= 7 or P= 8 or Ρ=7····, υ+6, when the downlink subframe is a normal downlink subframe of the TDD system, the punctured OFDM symbol specifically refers to And a last or last two OFDM symbols of the odd time slots of the downlink subframe;
或者,
当所述天线端口 p为 P = 7或 P = 8或 Ρ = 7'···'υ + 6,所述下行子帧为使用常规 CP的 TDD ***特殊子帧时,所述打孔 OFDM符号具体是指,所述下行子帧的偶数时隙的第三个 OFDM 符号, 或者所述下行子帧的偶数时隙的第三个和第四个 OFDM符号。 or, When the antenna port p is P= 7 or P= 8 or Ρ =7 '···' υ + 6 , the downlink subframe is a TDD system special subframe using a regular CP, the punctured OFDM symbol Specifically, the third OFDM symbol of the even time slot of the downlink subframe, or the third and fourth OFDM symbols of the even time slot of the downlink subframe.
21、 根据权利要求 15或 16所述的装置, 其特征在于, 所述下行子帧为同步信号传输子 帧 和 /或, The apparatus according to claim 15 or 16, wherein the downlink subframe is a synchronization signal transmission subframe and/or,
所述下行子帧中用于传输 DRS的 RE所在的资源块 RB , 具体包括: The resource block RB of the RE for transmitting the DRS in the downlink subframe includes:
所述下行子帧中下行数据传输所在的 RB集合中的所有 RB, 其中, 所述下行子帧中下 行数据传输所在的 RB集合为下行可用带宽内的任一位置的 RB集合; 或者, All the RBs in the RB set in which the downlink data transmission is performed in the downlink subframe, where the RB set in which the downlink data transmission is performed in the downlink subframe is an RB set at any position within the downlink available bandwidth; or
所述下行子帧中下行数据传输所在的 RB集合中与同步信号传输子帧中用于传输同步 信号的 RE所在的 RB编号相同的 RB。 The RB of the RB set in which the downlink data transmission is located in the downlink subframe is the same as the RB number of the RE for transmitting the synchronization signal in the synchronization signal transmission subframe.
22、 一种下行终端专用参考符号 DRS的传输装置, 其特征在于, 包括: A transmission device for a downlink terminal-specific reference symbol DRS, comprising:
数据接收模块, 用于通过天线端口 p接收下行子帧; a data receiving module, configured to receive a downlink subframe by using an antenna port p;
下行参考符号获取模块,用于按照 DRS在天线端口 p的资源映射方式,在所述下行子帧 中用于传输 DRS的资源单元 RE上获取 DRS; 同一时隙位置中, 所述下行子帧中用于传输 DRS的 RE所在的正交频分复用 OFDM符号的编号, 与同步信号传输子帧中用于传输同步信 号的 RE所在的 OFDM符号的编号不同。 a downlink reference symbol acquisition module, configured to acquire a DRS on a resource unit RE for transmitting a DRS in the downlink subframe according to a resource mapping manner of the DRS in the antenna port p; in the same slot position, in the downlink subframe The number of the orthogonal frequency division multiplexing OFDM symbol in which the RE for transmitting the DRS is located is different from the number of the OFDM symbol in which the RE for transmitting the synchronization signal in the synchronization signal transmission subframe is located.
23、根据权利要求 22所述的装置, 其特征在于, 如果还存在其他下行参考符号的传输, 同一时隙位置中, 所述下行子帧中用于传输 DRS的 RE所在的 OFDM符号的编号, 与所述其 他下行参考符号传输子帧中用于传输所述其他下行参考符号的 RE所在的 OFDM符号的编 号不同; 所述其他下行参考符号包括小区专属参考符号 CRS、 定位用参考符号 PRS、 信道 状态信息测量用参考符号 CSI-RS中的一种或多种组合。 The device according to claim 22, wherein, if there is still transmission of other downlink reference symbols, the number of the OFDM symbol in which the RE for transmitting the DRS is located in the downlink subframe in the same slot position, Different from the number of the OFDM symbol in which the RE for transmitting the other downlink reference symbol in the other downlink reference symbol transmission subframe is located; the other downlink reference symbols include a cell-specific reference symbol CRS, a positioning reference symbol PRS, and a channel The status information is measured by one or more combinations of reference symbols CSI-RS.
24、 根据权利要求 22或 23所述的装置, 其特征在于, 所述下行参考符号获取模块使用 的所述 DRS在天线端口 p的资源映射方式是指: The device according to claim 22 or 23, wherein the resource mapping manner of the DRS used by the downlink reference symbol acquisition module at the antenna port p is:
从 LTE-A Rel-10***中针对所述天线端口 p定义的至少一种 DRS资源映射方式中选择 的一种 DRS资源映射方式, 同一时隙位置中, 所述选择的 DRS资源映射方式确定的下行子 帧中用于传输 DRS的 RE所在的 OFDM符号的编号与同步信号传输子帧中用于传输同步信 号的 RE所在的 OFDM符号的编号不同; 或者, a DRS resource mapping manner selected from the at least one DRS resource mapping manner defined by the antenna port p in the LTE-A Rel-10 system, where the selected DRS resource mapping manner is determined in the same slot location The number of the OFDM symbol in which the RE for transmitting the DRS in the downlink subframe is located is different from the number of the OFDM symbol in which the RE for transmitting the synchronization signal in the synchronization signal transmission subframe is located; or
通过将 LTE-A Rel-10***中针对所述天线端口 p定义的 DRS资源映射方式确定的下行 子帧中用于传输 DRS的 RE位置进行基于 OFDM符号的平移, 得到的 DRS资源映射方式; 或者, The DRS resource mapping manner obtained by performing OFDM symbol-based translation on the RE position for transmitting the DRS in the downlink subframe determined by the DRS resource mapping manner defined for the antenna port p in the LTE-A Rel-10 system; or ,
通过将 LTE-A Rel-10***中针对所述天线端口 p定义的 DRS资源映射方式确定的下行 子帧中用于传输 DRS的 RE位置进行基于 OFDM符号的平移, 并进行基于子载波的平移, 得 到的 DRS资源映射方式。
Performing OFDM symbol-based translation and performing subcarrier-based translation by using the RE position for transmitting the DRS in the downlink subframe determined by the DRS resource mapping manner defined for the antenna port p in the LTE-A Rel-10 system, The obtained DRS resource mapping method.
25、 根据权利要求 24所述的装置, 其特征在于, 当所述下行参考符号获取模块使用的 所述 DRS在天线端口 p的资源映射方式是指从 LTE-A Rel-10***中针对所述天线端口 p定义 的至少一种 DRS资源映射方式中选择的一种 DRS资源映射方式时, 具体包括: The device according to claim 24, wherein the resource mapping manner of the DRS at the antenna port p used by the downlink reference symbol acquisition module refers to the LTE-A Rel-10 system When the DRS resource mapping mode selected in the at least one DRS resource mapping mode defined by the antenna port p is specifically included, the following includes:
如果所述下行子帧是使用常规循环前缀 CP的常规下行子帧,所述下行参考符号获取模 块使用的所述 DRS在天线端口 p的资源映射方式具体是指, LTE- A Rel-10***中特殊子帧配 置 3、 4、 8在常规 CP下的天线端口 p的 DRS资源映射方式, 所述常规下行子帧是指时分双工 TDD***常规下行子帧,或者频分双工 FDD***下行子帧;其中,所述天线端口 p为 P = 7或 P = 8或 Ρ = 7,···,υ + 6 , ν为 DRS对应的下行数据的传输层数; If the downlink subframe is a normal downlink subframe that uses a regular cyclic prefix CP, the resource mapping manner of the DRS used by the downlink reference symbol acquisition module at the antenna port p refers specifically to the LTE-A Rel-10 system. The DRS resource mapping mode of the antenna port p of the special subframe configuration 3, 4, and 8 in the conventional CP, the conventional downlink subframe refers to the regular downlink subframe of the time division duplex TDD system, or the downlink subframe of the frequency division duplex FDD system. a frame; wherein the antenna port p is P = 7 or P = 8 or Ρ = 7 , ···, υ + 6 , ν is the number of transmission layers of downlink data corresponding to the DRS ;
或者, Or,
如果所述下行子帧是使用常规 CP的 TDD***常规下行子帧,所述下行参考符号获取模 块使用的所述 DRS在天线端口 p的资源映射方式具体是指, LTE-A-Rel-10***中特殊子帧配 置 1、 2、 6、 7在常规 CP下的天线端口 p的 DRS资源映射方式; 其中, 所述天线端口 p为 P = 7 或 P = 8或 ρ = 7,···,υ + 6 , 为 DRS对应的下行数据的传输层数; If the downlink subframe is a conventional downlink subframe of a TDD system using a conventional CP, the resource mapping manner of the DRS used by the downlink reference symbol acquisition module at the antenna port p specifically refers to the LTE-A-Rel-10 system. The DRS resource mapping mode of the antenna port p in the normal subframe configuration 1, 2, 6, and 7 in the conventional CP; wherein, the antenna port p is P = 7 or P = 8 or ρ = 7, .... υ + 6 , the number of transmission layers of the downlink data corresponding to the DRS;
或者, Or,
如果所述下行子帧是使用扩展 CP的 TDD***常规下行子帧,所述下行参考符号获取模 块使用的所述 DRS在天线端口 p的资源映射方式具体是指, LTE- A Rel-10***中特殊子帧配 置 1、 2、 3、 5、 6在扩展 CP下的天线端口 p的 DRS资源映射方式;其中,所述天线端口 p为 P = 7 或 P = 8或 ρ = 7,···,υ + 6 , 为 DRS对应的下行数据的传输层数; If the downlink subframe is a conventional downlink subframe of the TDD system using the extended CP, the resource mapping manner of the DRS used by the downlink reference symbol acquisition module at the antenna port p refers specifically to the LTE-A Rel-10 system. The special subframe configuration 1, 2, 3, 5, 6 DRS resource mapping mode of the antenna port p under the extended CP; wherein the antenna port p is P = 7 or P = 8 or ρ = 7, . , υ + 6 , the number of transmission layers of the downlink data corresponding to the DRS;
或者, Or,
如果所述下行子帧是使用常规 CP的 TDD***特殊子帧,所述下行参考符号获取模块使 用的所述 DRS在天线端口 p的资源映射方式具体是指 , LTE-A Rel-10***中常规下行子帧在 常规 CP下的天线端口 p的 DRS资源映射方式; 其中, 所述天线端口 p为 P = 7或 P = 8或 ρ = Ί, ..., υ + 6 , 为 DRS对应的下行数据的传输层数。 If the downlink subframe is a TDD system special subframe that uses a conventional CP, the resource mapping manner of the DRS used by the downlink reference symbol acquisition module at the antenna port p specifically refers to a conventional LTE-A Rel-10 system. The DRS resource mapping mode of the antenna port p of the downlink subframe in the normal CP; wherein the antenna port p is P = 7 or P = 8 or ρ = Ί, ..., υ + 6 , which is the downlink corresponding to the DRS The number of layers of data transfer.
26、 根据权利要求 22或 23所述的装置, 其特征在于, 所述下行参考符号获取模块具体 用于: The device according to claim 22 or 23, wherein the downlink reference symbol acquisition module is specifically configured to:
按照 LTE-A Rel-10***中针对所述天线端口 p定义的 DRS资源映射方式,在所述下行子 帧中打孔 OFDM符号对应的 RE之外的用于传输 DRS的 RE上获取 DRS; 所述打孔 OFDM符号 是指, 同一时隙位置中, 所述 DRS资源映射方式确定的存在 DRS映射的 OFDM符号中, 与 同步信号传输子帧中用于传输同步信号的 RE所在的 OFDM符号的编号相同的 OFDM符号, 或者,所述打孔 OFDM符号是指, 同一时隙位置中,所述 DRS资源映射方式确定的存在 DRS 映射的 OFDM符号中, 与同步信号传输子帧中用于传输同步信号的 RE所在的 OFDM符号的 编号相同和编号相邻的 OFDM符号。 Obtaining a DRS on an RE for transmitting a DRS other than an RE corresponding to an OFDM symbol in the downlink subframe according to a DRS resource mapping manner defined for the antenna port p in the LTE-A Rel-10 system; The punctured OFDM symbol refers to the number of the OFDM symbol in the OFDM symbol in the DRS resource mapping manner determined by the DRS resource mapping manner and the RE used to transmit the synchronization signal in the synchronization signal transmission subframe in the same slot position. The same OFDM symbol, or the punctured OFDM symbol refers to the OFDM symbol in the DRS resource mapping manner determined by the DRS resource mapping manner in the same slot position, and the synchronization signal used in the synchronization signal transmission subframe. The OFDM symbols in which the REs are located are the same numbered and numbered adjacent OFDM symbols.
27、 根据权利要求 26所述的装置, 其特征在于:
当所述天线端口 P = 5 , 所述下行子帧为使用常规 CP的 FDD***下行子帧时, 所述打孔 OFDM符号具体是指, 所述下行子帧的偶数时隙的最后一个 OFDM符号; 27. Apparatus according to claim 26 wherein: When the antenna port is P = 5 and the downlink subframe is a downlink subframe of an FDD system using a conventional CP, the punctured OFDM symbol specifically refers to a last OFDM symbol of an even-numbered slot of the downlink subframe. ;
或者, Or,
当所述天线端口 P = 5 , 所述下行子帧为使用扩展 CP的 FDD***下行子帧时, 所述打孔 OFDM符号具体是指, 所述下行子帧的偶数时隙的倒数第二个 OFDM符号; When the antenna port P = 5, the downlink FDD system downlink subframes using an extended CP, the puncturing means specific OFDM symbols, the downlink subframe even slot reciprocal second OFDM symbol;
或者, Or,
当所述天线端口 p为 P = 7或 P = 8或 Ρ = 7,···,υ + 6 , "为 DRS对应的下行数据的传输层 数, 所述下行子帧为 FDD***下行子帧时, 所述打孔 OFDM符号具体是指, 所述下行子帧 的偶数时隙的最后两个 OFDM符号; When the antenna port p is P = 7 or P = 8 or Ρ = 7,···, υ + 6 , "the number of transmission layers of the downlink data corresponding to the DRS , and the downlink subframe is the downlink subframe of the FDD system. The punctured OFDM symbol specifically refers to the last two OFDM symbols of the even time slots of the downlink subframe;
或者, Or,
当所述天线端口 p为 P = 7或 P = 8或 Ρ = 7,···," + 6 , 所述下行子帧为 TDD***常规下行 子帧时, 所述打孔 OFDM符号具体是指, 所述下行子帧的奇数时隙的最后一个或最后两个 OFDM符号; When the antenna port p is P = 7 or P = 8 or Ρ = 7 , ···, " + 6 , when the downlink subframe is a normal downlink subframe of the TDD system, the punctured OFDM symbol specifically refers to And a last or last two OFDM symbols of the odd time slots of the downlink subframe;
或者, Or,
当所述天线端口 p为 P = 7或 P = 8或 Ρ = 7'···'υ + 6 ,所述下行子帧为使用常规 CP的 TDD ***特殊子帧时,所述打孔 OFDM符号具体是指,所述下行子帧的偶数时隙的第三个 OFDM 符号, 或者所述下行子帧的偶数时隙的第三个和第四个 OFDM符号。 When the antenna port p is P= 7 or P= 8 or Ρ =7 '···' υ + 6 , the downlink subframe is a TDD system special subframe using a regular CP, the punctured OFDM symbol Specifically, the third OFDM symbol of the even time slot of the downlink subframe, or the third and fourth OFDM symbols of the even time slot of the downlink subframe.
28、 根据权利要求 22或 23所述的装置, 其特征在于, 所述下行子帧为同步信号传输子 帧; 和 /或, The apparatus according to claim 22 or 23, wherein the downlink subframe is a synchronization signal transmission subframe; and/or,
所述下行子帧中用于传输 DRS的 RE所在的资源块 RB , 具体包括: The resource block RB of the RE for transmitting the DRS in the downlink subframe includes:
所述下行子帧中下行数据传输所在的 RB集合中的所有 RB, 其中, 所述下行子帧中下 行数据传输所在的 RB集合为下行可用带宽内的任一位置的 RB集合; 或者, All the RBs in the RB set in which the downlink data transmission is performed in the downlink subframe, where the RB set in which the downlink data transmission is performed in the downlink subframe is an RB set at any position within the downlink available bandwidth; or
所述下行子帧中下行数据传输所在的 RB集合中与同步信号传输子帧中用于传输同步 信号的 RE所在的 RB编号相同的 RB。
The RB of the RB set in which the downlink data transmission is located in the downlink subframe is the same as the RB number of the RE for transmitting the synchronization signal in the synchronization signal transmission subframe.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210107727 | 2012-04-12 | ||
CN201210107727.0 | 2012-04-12 | ||
CN201310053685.1A CN103378962B (en) | 2012-04-12 | 2013-02-19 | A kind of transmission method and device of DRS |
CN201310053685.1 | 2013-02-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013152731A1 true WO2013152731A1 (en) | 2013-10-17 |
Family
ID=49327120
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2013/074101 WO2013152731A1 (en) | 2012-04-12 | 2013-04-11 | Drs transmission method and device |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN103378962B (en) |
WO (1) | WO2013152731A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106658584A (en) * | 2015-10-30 | 2017-05-10 | 北京三星通信技术研究有限公司 | Signal sending and receiving and interference measurement methods and equipment thereof |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9979522B2 (en) * | 2015-09-30 | 2018-05-22 | Mediatek Inc. | Multiplexing DRS within a transmission burst for opportunistic spectrum access |
WO2017156711A1 (en) * | 2016-03-15 | 2017-09-21 | 华为技术有限公司 | Signal transmission method and base station |
CN110505701B (en) | 2018-01-09 | 2020-12-25 | 华为技术有限公司 | Communication method and device |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101729115A (en) * | 2008-10-29 | 2010-06-09 | 华为技术有限公司 | Multi-antenna transmitting method, multi-antenna transmitting device and multi-antenna transmitting system |
CN102036301A (en) * | 2009-09-29 | 2011-04-27 | 中兴通讯股份有限公司 | Method and device for transmitting downlink demodulation reference signals of relay link and relay system |
CN102055702A (en) * | 2009-10-30 | 2011-05-11 | 中兴通讯股份有限公司 | Transmission method, base station, relay station and system for down link demodulation reference signal |
WO2011090353A2 (en) * | 2010-01-22 | 2011-07-28 | 엘지전자 주식회사 | Method and apparatus for providing downlink control information in an mimo wireless communication system |
-
2013
- 2013-02-19 CN CN201310053685.1A patent/CN103378962B/en active Active
- 2013-04-11 WO PCT/CN2013/074101 patent/WO2013152731A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101729115A (en) * | 2008-10-29 | 2010-06-09 | 华为技术有限公司 | Multi-antenna transmitting method, multi-antenna transmitting device and multi-antenna transmitting system |
CN102036301A (en) * | 2009-09-29 | 2011-04-27 | 中兴通讯股份有限公司 | Method and device for transmitting downlink demodulation reference signals of relay link and relay system |
CN102055702A (en) * | 2009-10-30 | 2011-05-11 | 中兴通讯股份有限公司 | Transmission method, base station, relay station and system for down link demodulation reference signal |
WO2011090353A2 (en) * | 2010-01-22 | 2011-07-28 | 엘지전자 주식회사 | Method and apparatus for providing downlink control information in an mimo wireless communication system |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106658584A (en) * | 2015-10-30 | 2017-05-10 | 北京三星通信技术研究有限公司 | Signal sending and receiving and interference measurement methods and equipment thereof |
US10931419B2 (en) | 2015-10-30 | 2021-02-23 | Samsung Electronics Co., Ltd | Method and device for transmitting and receiving signals |
CN106658584B (en) * | 2015-10-30 | 2022-02-15 | 北京三星通信技术研究有限公司 | Method and apparatus for signal transmission and reception and interference measurement |
Also Published As
Publication number | Publication date |
---|---|
CN103378962B (en) | 2017-03-29 |
CN103378962A (en) | 2013-10-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN103379072B (en) | A kind of method for transmitting signals and device | |
KR101633209B1 (en) | Method and apparatus for aggregating carriers in wireless communication systems | |
JP6781152B2 (en) | Data transmission / reception methods and devices for that in wireless communication systems | |
CN108282325B (en) | Special subframe signal transmission method and equipment for LTE TDD | |
KR101582882B1 (en) | Method and user equipment for receiving reference signals, and method and base station for transmitting reference signals | |
CN103391264B (en) | Method and device for identifying carrier wave type | |
JP2018535570A (en) | Method and apparatus for receiving downlink physical broadcast channel in wireless connection system for supporting narrow band Internet | |
EP2689550B1 (en) | Search space for uplink grant in an aggregated-carrier mobile communication system | |
WO2013141584A1 (en) | Method for transmitting reference signal and apparatus using the method | |
KR20140126309A (en) | User equipment and method for receiving synchronization signals, and base station and method for transmitting synchronization signals | |
WO2014182116A1 (en) | Method for puncturing ue specific reference signal in radio access system supporting new carrier type and apparatus supporting same | |
WO2012083766A1 (en) | Method, system and device for transmitting and detecting physical downlink control channel | |
WO2014007573A1 (en) | Method and user equipment for synchronizing component carriers used in carrier aggregation | |
US11153905B2 (en) | Method for supporting full duplex radio (FDR) operation in wireless communication system and apparatus therefor | |
KR20150101954A (en) | A method of transmitting a scheduling assignment signal for Device-to-Device communication in a wireless communication system, and an apparatus thereof | |
WO2012152149A1 (en) | Information receiving/sending method and device in physical downlink control channel | |
KR20150005532A (en) | Method for dynamic allocation of radio resources in wireless communication system and device therefor | |
WO2014003407A1 (en) | Method and user equipment for receiving broadcast/multicast service receiving, and method and base station for transmitting broadcast/multicast service | |
CN104009831B (en) | User's dedicated demodulation reference signal transmits and data demodulation method and equipment | |
WO2014169839A1 (en) | Processing method, device and system for synchronization signals and channel estimation method and device | |
KR20150013519A (en) | Method for receiving downlink control channel by means of terminal in wireless communication system and apparatus for same | |
WO2014000618A1 (en) | Downlink ue-specific dm-rs transmission method, ue and network-side device | |
WO2012165877A2 (en) | Method for searching for enhanced physical downlink control channel region | |
KR20140065392A (en) | Method for transmitting and receiving ue-specific reference signal and apparatus for same | |
WO2014015699A1 (en) | Method and device for sending/receiving new carrier reference signal |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 13775391 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 13775391 Country of ref document: EP Kind code of ref document: A1 |