WO2013044517A1 - Uplink signal transmission method, user equipment and base station in coordinated multi-point system - Google Patents
Uplink signal transmission method, user equipment and base station in coordinated multi-point system Download PDFInfo
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- WO2013044517A1 WO2013044517A1 PCT/CN2011/080491 CN2011080491W WO2013044517A1 WO 2013044517 A1 WO2013044517 A1 WO 2013044517A1 CN 2011080491 W CN2011080491 W CN 2011080491W WO 2013044517 A1 WO2013044517 A1 WO 2013044517A1
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- user equipment
- uplink signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/022—Site diversity; Macro-diversity
- H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
Definitions
- the present invention relates to the field of communications, and in particular, to an uplink signal transmission method, a user equipment, and a base station in a coordinated multipoint system.
- LTE-A LTE-Advanced
- CoMP Coordinated Multi-point Transmission/Reception
- the coordinated multi-point transmission scenario uses the geographically adjacent transmission points to cooperatively transmit signals to the user, and especially for the cell edge users, the signal quality is improved and the coverage is expanded.
- the point of participation in data transmission/reception (TP/RP, Transmission Point/Reception Point) can be divided into the monthly service node serving point (similar to the servant cell in the LTE Rel-8). Cooperating point.
- PUCCH Physical Uplink Control Channel
- Existing PUCCH format 1/la/lb inter-cell interference for HARQ-ACK transmission is performed by cell-specific Cyclic Shift hopping method to perform interference randomization to ensure users in each cell. Transmit PUCCH performance.
- CoMP in a coordinated multipoint system with different cell identities, for a case where a plurality of UL CoMP points (including an eNB, an RRH, etc.) receive a PUCCH signal of a CoMP UE, CoMP cannot be guaranteed.
- An embodiment of the present invention provides an uplink signal transmission method, a user equipment, and a base station in a coordinated multipoint system, and aims to: reduce cooperation in a coordinated multipoint system with different cell identifiers for user equipment that receives uplink signals at multiple points. The interference from the user equipment served by the cell.
- an uplink signal transmission method in a coordinated multipoint system wherein the coordinated multipoint system includes a service node and a cooperation node having different cell identifiers, and the service node and the collaboration The user equipment served by the node; the uplink signal transmission method includes:
- the user equipment transmits an uplink signal to the serving node and the cooperation node, wherein an uplink signal transmitted by the user equipment is orthogonal to an uplink signal transmitted by other user equipments served by the cooperation node.
- an uplink signal transmission method in a coordinated multipoint system includes a service node and a cooperation node having different cell identifiers, and by the service node and a user equipment served by the collaboration node; the uplink signal transmission method includes:
- the serving node receives an uplink signal transmitted by the user equipment, where an uplink signal transmitted by the user equipment is orthogonal to an uplink signal transmitted by other user equipments served by the cooperation node.
- a user equipment is provided, which is applied to a coordinated multipoint system, where the coordinated multipoint system further includes a service node and a collaboration node having different cell identifiers;
- An uplink signal transmission unit that transmits an uplink signal to the serving node and the cooperating node, wherein the uplink signal is orthogonal to an uplink signal transmitted by other user equipments served by the cooperating node.
- a base station for use in a coordinated multipoint system, wherein the coordinated multipoint system further includes a cooperative node having a different cell identity from the base station, and the base station And a user equipment served by the collaboration node; the base station includes: An uplink signal receiving unit receives an uplink signal transmitted by the user equipment, where an uplink signal transmitted by the user equipment is orthogonal to an uplink signal transmitted by other user equipments served by the cooperation node.
- a computer readable program wherein when the program is executed in a user equipment, the program causes a computer to execute an uplink signal transmission method as described above in the user equipment .
- a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform an uplink signal transmission method as described above in a user equipment.
- a computer readable program wherein when the program is executed in a base station, the program causes a computer to perform an uplink signal transmission method as described above in the base station.
- a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform an uplink signal transmission method as described above in a base station.
- An advantageous effect of the embodiment of the present invention is that, for a coordinated multipoint system with different cell identifiers, the uplink transmission signal of the user equipment that performs multi-point cooperation and the uplink transmission signal of the user equipment served by the cooperation node are orthogonal, The interference of the user equipment of the neighboring cell can be further reduced, thereby ensuring the performance of CoMP multipoint reception.
- FIG. 1 is a schematic diagram of a heterogeneous network in which a low-power RRH having different cell IDs exists in a macro cell;
- FIG. 2 is a schematic diagram of inter-cell interference of a PUCCH sent by a coordinated multi-point receiving in an uplink CoMP scenario
- FIG. 3 is a schematic diagram of a frame structure of a PUCCH format 1/la/lb with a regular cyclic prefix
- FIG. 4 is a schematic diagram of a PUCCH format 1/la/lb between user equipments in a cell being orthogonal to each other in a data region and a pilot region, respectively. ;
- FIG. 5 is a flowchart of an uplink signal transmission method according to Embodiment 1 of the present invention.
- FIG. 6 is still another flowchart of the uplink signal transmission method according to Embodiment 1 of the present invention
- FIG. 7 is still another flowchart of the uplink signal transmission method according to Embodiment 1 of the present invention
- FIG. 8 is an uplink signal transmission according to Embodiment 2 of the present invention
- FIG. 9 is a flowchart of an uplink signal transmission method according to Embodiment 2 of the present invention
- FIG. 10 is a schematic diagram of orthogonality of physical resources implemented by the FDM method according to Embodiment 2 of the present invention
- FIG. 12 is still another schematic structural diagram of a user equipment according to Embodiment 3 of the present invention.
- Figure 13 is a block diagram showing the structure of a base station according to Embodiment 4 of the present invention.
- Figure 14 is a block diagram showing still another configuration of a base station according to Embodiment 4 of the present invention.
- inter-cell CoMP inter-cell CoMP
- FIG. 1 is a schematic diagram of a heterogeneous network in which a low-power RRH having different cell IDs exists in a macro cell coverage.
- the low-power RRH coexists in the coverage of the macro-cell base station, but the RRH and the eNB have different cell IDs.
- the embodiment of the present invention is only described by using the CoMP scenario 3 in the LTE-A system shown in FIG. 1 as an example, but it should be noted that the embodiment of the present invention is not limited thereto, and may be applicable to any cooperation with different cell identifiers. Point system.
- the embodiment of the present invention relates to a small-area interference problem of a physical uplink control channel (PUCCH, Physical Uplink Control Channel) format 1/1 a/lb for HARQ-ACK transmission in a UL CoMP scenario.
- PUCCH Physical Uplink Control Channel
- the following describes the data area of the PUCCH format 1/la/lb as an example.
- the present invention is not limited to the PUCCH, and can be applied to any other uplink signal transmission.
- FIG. 2 is a schematic diagram of inter-cell interference of a PUCCH in an uplink CoMP scenario.
- the CoMP scenario 3 there are multiple low-power RRHs of different cell IDs within the coverage of the macro eNB.
- the uplink PUCCH signal of the UE1 of the user equipment (UE, User Equipment) at the edge of the RRH1 coverage is jointly received by the macro eNB and the RRH1.
- the user equipment UE2 of the traditional single-point service within the coverage of the RRH1 is scheduled to be on the same resource block (RB), thereby causing interference to the CoMP UE1.
- RB resource block
- the macro eNB is the serving node, RRH1. It is a cooperating point.
- the path loss (PL, Pathloss) between the cooperative node and the CoMP UE is larger than that of the serving node to the CoMP UE, which is more susceptible to interference.
- the PUCCH signal transmitted by the UE causes interference to the PUCCH signal of the CoMP UE1, thereby deteriorating cooperation.
- the node RRH1 demodulates the PUCCH signal of the CoMP UE1, and the gain of the multipoint reception under the UL CoMP is small.
- PUCCH format 1/la/lb is used for HARQ-ACK bit transmission.
- 3 is a schematic diagram of a PUCCH format 1/la/lb frame structure having a regular cyclic prefix (CP), as shown in FIG. 3, a pilot signal (DMRS) for data demodulation in one slot (slot). , demodulation reference signal ) occupying the middle three SC-FDMA signals, the PUCCH data area occupies 4 symbols.
- CP regular cyclic prefix
- DMRS pilot signal
- demodulation reference signal occupying the middle three SC-FDMA signals
- Table 1 shows the PUCCH format 1/la/lb intra-cell and inter-cell interference cancellation method, as shown in Table 1:
- the PUCCH format 1/la/lb resource passes through the Physical Downlink Control Channel (PDCCH).
- the PUCCH format 1/la/lb for the HARQ-ACK transmission in the next cell of the conventional CP passes through six cyclic shifts (CS, cyclic shift) and three orthogonal sequences of length 4 (orthogonal). Sequences can support simultaneous co-frequency resource transmission of 18 PUCCH formats 1/la/lb on 1 RB, and at the same time, CS-hopping between cell-specific SC-FDMA symbols (Cell-specific CS hopping over SC- FDMA symbol) achieves randomization of interference between cells.
- Table 1
- Figure 4 shows a schematic diagram of PUCCH format 1/la/lb mutually orthogonal among users in a cell. As shown in Figure 4, two cells with the same cell identity in one cell are scheduled to the same time-frequency resource. The same base sequence is used when transmitting PUCCH format 1/la/lb. In the case where two users adopt the same cyclic shift, PUCCH format 1 of UE1 and UE2 can be made by different orthogonal codes (OCC, Orthogonal Cover Code). /la/lb is multiplexed and orthogonal in CDM mode.
- OFC Orthogonal Code
- the PUCCH sequence (including the data region and the DMRS region) that is orthogonal between the CoMP UE and the cooperating node user can be designed to eliminate interference of the CoMP UE by the user of the cooperative node, thereby improving the uplink.
- the CoMP scene receives the performance of the PUCCH signal at multiple points.
- Embodiments of the present invention provide an uplink signal transmission method in a coordinated multipoint system, where a coordinated multipoint system includes a service node and a collaboration node having different cell identifiers, and a user equipment served by the service node and the collaboration node.
- the uplink signal transmission method will be described below from the user equipment side.
- FIG. 5 is a flowchart of an uplink signal transmission method according to an embodiment of the present invention. As shown in FIG. 5, on the user equipment side, the uplink signal transmission method includes:
- Step 501 The user equipment transmits an uplink signal to the serving node and the cooperation node, where the uplink signal transmitted by the user equipment is orthogonal to the uplink signal transmitted by other user equipments served by the cooperation node.
- the serving node may be a macro cell base station, and the cooperative node may be an RRH, and the serving node and the cooperative node have different cell identifiers.
- the service node and the cooperation node may both serve the macro cell base station to jointly serve the user equipment.
- the specific composition of the coordinated multipoint system can be determined according to the actual situation.
- orthogonality between the CoMP UE and the UE served by the cooperative node may be implemented by using Code Division Multiplexing (CDM).
- CDM Code Division Multiplexing
- FIG. 6 is still another flowchart of an uplink signal transmission method according to an embodiment of the present invention. As shown in FIG. 6, on the user equipment side, the uplink control channel transmission method includes:
- Step 601 processing a cyclic shift of the user equipment, so that the symbol is used on each symbol.
- the difference between the hopping value of the cyclic shift of the household device and the hopping value of the cyclic shift of other user equipments served by the cooperative node is unchanged;
- Step 602 The user equipment transmits an uplink signal to the serving node and the cooperation node according to the processed cyclic shift and an orthogonal sequence different from other user equipments.
- the UE2 shown in FIG. 2 and the other user equipments served by the cooperative node are exemplified by the UE2 shown in FIG. 2 as an example.
- the PUCCH signal sent by the UE1 is received by the macro eNB and the RRH1, and the UE2 belongs to the single-point service user of the RRH1 coverage.
- ⁇ a u , a 12 , a 13 , a 14 ⁇ and ⁇ ⁇ 21 , ⁇ 22 , ⁇ 23 , ⁇ 24 ⁇ represent the sequence ⁇ used by UE1 and UE2 in PUCCH format 1/la/ The CS hop value on the four SC-FDMAs in the data area of lb.
- the cyclic shift of the user equipment may be processed, so that the hopping value of the cyclic shift of the user equipment on each symbol, and other user equipments served by the cooperative node The difference between the transition values of the cyclic shift does not change.
- equation (4) can be further expressed as: Because
- UE1 and UE2 use different orthogonal sequences, that is, and ⁇ 2 are orthogonal to each other, so that ⁇ 1 ⁇ 1 ⁇ ) ⁇ . Therefore, the orthogonality between UE1 and UE2 can be finally realized. .
- the step 601 may specifically include: turning off the cyclic shift, stopping the cyclic shift of the user equipment, and other user equipments of the cooperative node service scheduled to the same time-frequency resource as the user equipment. . That is, for the user equipment, an instruction sent by the service node to stop the cyclic shift of the user equipment may be received; according to the instruction, the cyclic shift of the user equipment is turned off.
- the serving node may send an indication to the user equipment (for example, UE1) to disable the CS hopping, which may be indicated by higher layer signaling.
- the user equipment turns off the CS hopping function of the PUCCH format 1/la/lb.
- the serving node sends an indication of turning off the CS hopping to the cooperating node through the backhaul interaction mode of the fiber connection/X2 interface, etc.
- the coordinating node dispatches the user to the same time-frequency resource that is served by the UE1.
- the device eg, UE2 sends an indication to turn off the CS hop, which can be indicated by higher layer signaling.
- the user equipment of the coordinated cell turns off the CS hopping function of the PUCCH format 1/la/lb sent by the user equipment.
- the specific implementation method can be determined according to the actual situation.
- the step 601 may include: receiving, by the user equipment, a cell identifier of the coordinated node sent by the serving node; performing, according to the received cell identifier of the coordinated node, a cycle related to the coordinated node cell identifier on each symbol. Shifting of the shift.
- the UE1 and the UE2 are still used as an example, and the serving node macro eNB where the CoMP UE1 is located may notify the CoMP UE1 in a dynamic or semi-static manner, and the CoMP UE1 may perform user-specific CS hopping, ie UE-specific CS hopping.
- the cell-specific CS hopping of users in each cell is achieved by:
- the variation of the CS of CoMP UE1 on each SC-FDMA in one slot is equal to the variation of the CS of UE2 on each SC-FDMA in one slot, ie a 2l + , and so on.
- the orthogonality between the CoMP UE and the UE served by the cooperative node may be implemented by using a Frequency Division Multiplexing (FDM) mode.
- FDM Frequency Division Multiplexing
- FIG. 7 is still another flowchart of the uplink signal transmission method according to the embodiment of the present invention. As shown in FIG. 7, the uplink signal transmission method includes:
- Step 701 The user equipment performs uplink signal transmission according to the resource sequence number of the resource block used by the serving node to indicate the resource block used by the user equipment for uplink signal transmission, where the resource block indicated by the resource sequence number is different from the coordinated node to other users.
- the resource block of the device is not limited to the resource sequence number of the resource block used by the serving node to indicate the resource block used by the user equipment for uplink signal transmission, where the resource block indicated by the resource sequence number is different from the coordinated node to other users. The resource block of the device.
- the scenario shown in FIG. 2 is still taken as an example, and the backhaul signaling (such as through a fiber connection or an X2 interface) is exchanged between the primary cell macro eNB constituting the CoMP cell and the cooperative node RRH1, and the CoMP UE1 can be given. And the neighboring cell user equipment allocates different PUCCH resource blocks, thereby implementing orthogonality of the FDM mode.
- the uplink transmission method may further include: Step 702: The user equipment receives a resource sequence number that is sent by the service node and is used to indicate a resource block used by the user equipment for uplink signal transmission.
- Embodiments of the present invention provide an uplink signal transmission method in a coordinated multipoint system, where a coordinated multipoint system includes a service node and a collaboration node having different cell identifiers, and a user equipment served by the service node and the collaboration node.
- the uplink signal transmission method will be described below from the base station side.
- FIG. 8 is still another flowchart of an uplink signal transmission method according to an embodiment of the present invention. As shown in FIG. 8, on the base station side, the uplink signal transmission method includes:
- Step 801 The serving node receives an uplink signal transmitted by the user equipment, where the uplink signal transmitted by the user equipment is orthogonal to the uplink signal transmitted by other user equipments served by the cooperation node.
- the orthogonality between the CoMP UE and the UE served by the cooperative node may be implemented in a CDM manner.
- the CoMP UE and the UE served by the cooperative node are tuned To the same time-frequency resources.
- the uplink signal transmitted by the user equipment is sent according to the cyclic shift after processing and an orthogonal sequence different from other user equipments; wherein the hop value of the cyclic shift after processing on each symbol, The difference between the hopping values of the cyclic shifts of other user equipments served by the cooperative node is unchanged.
- the uplink signaling method may further include: turning off the CS hopping of each user equipment. That is, the serving node may send an instruction to stop the cyclically shifted hop to the cooperating node and the user equipment to turn off the cyclic shift of the user equipment and other user equipments served by the cooperative node occupying the same time-frequency resource as the user equipment.
- the uplink signal transmission method may further include: the serving node sending the cell identifier of the cooperation node to the user equipment, so that the user equipment performs a cyclic shift hop according to the cell identifier of the cooperation node.
- the cyclic shift of the user equipment is processed, so that the hopping value of the cyclic shift of the user equipment on each symbol, and other user equipments served by the cooperative node
- the difference between the hopping values of the cyclic shifts is unchanged; at the same time, the two user equipments adopt different orthogonal codes, thereby ensuring the orthogonality of the uplink transmission signals and further reducing the interference of the user equipment of the neighboring cells.
- the orthogonality between the CoMP UE and the UE of the cooperative node service may be implemented in an FDM manner.
- FIG. 9 is still another flowchart of the uplink signal transmission method according to the embodiment of the present invention. As shown in FIG. 9, the uplink signal transmission method includes:
- step 901 the serving node sends a resource sequence number of the resource block used for the uplink signal transmission by the user equipment to the user equipment, so that the user equipment performs uplink signal transmission on the resource block indicated by the resource sequence number;
- the resource block indicated by the resource sequence number is different from the resource block allocated by the cooperation node to other user equipments.
- FIG. 10 is a schematic diagram of orthogonalizing physical resources by using the FDM method according to an embodiment of the present invention. As shown in FIG. 10, the CoMP user equipment and the neighbor cell user equipment may be allocated different PUCCH resource blocks.
- the uplink signal transmission method may further include: the serving node sends the resource sequence number of the resource block used for instructing the user equipment to perform uplink signal transmission to the cooperation node, so that the collaboration node is allocated.
- the resource avoids allocating the resource block indicated by the resource sequence number to the user serving its own cell.
- the CoMP UE1 PUCCH format 1/la/lb transmission resource is used to notify the user through high layer signaling, and the service node macro eNB where the CoMP UE1 is located will be CoMP.
- the i eeH used by the UE1 tells the CoMP UE's cooperating node RRH1 through the backhaul mode (such as the fiber connection or the X2 interface), and the RRH1 separates from the CoMP UE1 from the RB resource block when scheduling the PUCCH resource of the UE (for example, UE2) of its own cell. .
- the PUCCH format 1/la/lb transmission method may further include: the serving node includes a resource sequence number indicating a resource block used by the user equipment to perform the uplink control channel transmission.
- the resource set is sent to the cooperation node, so that the cooperation node avoids allocating the resource block indicated by the resource sequence number to the user serving its own cell when allocating resources.
- a set of resources ⁇ CCH4 C - ⁇ ⁇ , ⁇ ⁇ is given to CoMP UE1 in a semi-static manner, and the set of resource information is communicated to the cooperative node of CoMP UE1 through a backhauK such as a fiber connection or an X2 interface.
- a backhauK such as a fiber connection or an X2 interface.
- FIG. 11 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
- the user equipment includes: an uplink signal transmission unit 1101.
- the uplink signal transmission unit 1101 transmits an uplink signal to the serving node and the cooperation node, where the uplink signal is orthogonal to the uplink signal transmitted by other user equipments served by the cooperation node.
- the orthogonality between the CoMP UE and the UE served by the cooperative node may be implemented in a CDM manner.
- the CoMP UE and the UE served by the cooperating node are scheduled to use the same time-frequency resource.
- FIG. 12 is still another schematic diagram of the configuration of the user equipment according to the embodiment of the present invention.
- the user equipment includes: a cyclic shift processing unit 1201 and an uplink signal transmission unit 1202.
- the cyclic shift processing unit 1201 processes the cyclic shift of the user equipment, so that the hopping value of the cyclic shift of the user equipment on each symbol, and the cyclic shift of other user equipments served by the cooperative node The difference between the hopping values is unchanged; the uplink signal transmission unit 1202 transmits an uplink signal to the serving node and the coordination point according to the processed cyclic shift and the orthogonal sequence different from other user equipments.
- the cyclic shift processing unit 1201 may specifically include: a shutdown instruction receiving unit that receives an instruction sent by the service node to stop a cyclic shift of the user equipment; and a cyclic shift off unit, according to the instruction The jump of the cyclic shift of the user equipment.
- the cyclic shift off unit may turn off its CS jump function after receiving the indication of the closed CS transition sent by the serving node.
- Other user equipment such as UE2 can also turn off its CS transition function after receiving an indication that the cooperative node (such as RRH1) sends off the CS transition.
- the cyclic shift processing unit 1201 may specifically include: a cell identity receiving unit that receives a cell identity of the cooperation node sent by the service node; a cyclic shift hopping unit, according to the received cell of the cooperation node Identification, a jump that is cyclically shifted on each symbol.
- the cyclic shift of the user equipment is processed, so that the hopping value of the cyclic shift of the user equipment on each symbol, and other user equipments served by the cooperative node
- the difference between the hopping values of the cyclic shifts is unchanged; at the same time, the two user equipments adopt different orthogonal codes, thereby ensuring the orthogonality of the uplink transmission signals and further reducing the interference of the user equipment of the neighboring cells.
- the orthogonality between the CoMP UE and the UE served by the cooperative node may be implemented in an FDM manner.
- the uplink signal transmission unit 1101 may specifically include: transmitting, according to the resource sequence number of the resource block used by the serving node to indicate the resource block used by the user equipment for uplink signal transmission, where the resource block indicated by the resource sequence number is different from the coordinated node.
- the user equipment may further include: a resource sequence number receiving unit, where the resource sequence number sent by the service node for indicating the resource block used by the user equipment for uplink signal transmission is received.
- the embodiment of the present invention further provides a base station, which is applied to a coordinated multipoint system, where the coordinated multipoint system further includes a cooperation node having a cell identity different from the service node, and a user equipment served by the base station and the collaboration node. .
- the coordinated multipoint system further includes a cooperation node having a cell identity different from the service node, and a user equipment served by the base station and the collaboration node.
- FIG. 13 is a schematic structural diagram of a base station according to an embodiment of the present invention.
- the base station includes: an uplink signal receiving unit 1301.
- the uplink signal receiving unit 1301 receives the uplink signal transmitted by the user equipment, where the uplink signal transmitted by the user equipment is orthogonal to the uplink signal transmitted by other user equipments served by the cooperative node.
- the orthogonality between the CoMP UE and the UE served by the cooperative node may be implemented in a CDM manner.
- the CoMP UE and the UE served by the cooperating node are scheduled to use the same time-frequency resource.
- the uplink signal receiving unit 1301 receives the uplink signal sent by the user equipment according to the processed cyclic shift; wherein, on each symbol, the processed cyclic shift hop value and other user equipments served by the cooperative node The difference between the transition values of the cyclic shifts is constant.
- the base station may further include: a shutdown instruction sending unit that sends an instruction to stop the cyclic shifting hopping to the cooperation node and the user equipment to turn off the cyclic shift of the user equipment and other user equipments Jump.
- a shutdown instruction sending unit that sends an instruction to stop the cyclic shifting hopping to the cooperation node and the user equipment to turn off the cyclic shift of the user equipment and other user equipments Jump.
- the base station may further include: a cell identifier sending unit, It sends the cell identifier of the cooperation node to the user equipment, so that the user equipment performs a cyclic shift hop according to the cell identifier of the cooperation node.
- the cyclic shift of the user equipment is processed, so that the hopping value of the cyclic shift of the user equipment on each symbol, and other user equipments served by the cooperative node
- the difference between the hopping values of the cyclic shifts is unchanged; the orthogonality of the uplink transmission signals can be ensured, thereby further reducing the interference of the user equipment of the neighboring cells.
- the orthogonality between the CoMP UE and the UE of the cooperative node service may be implemented in an FDM manner.
- FIG. 14 is a schematic diagram of still another structure of a base station according to an embodiment of the present invention.
- the base station 1400 includes: an uplink signal receiving unit 1401 and a resource sequence number transmitting unit 1402.
- the resource sequence number sending unit 1402 sends a resource sequence number for indicating a resource block used by the user equipment to perform uplink control channel transmission to the user equipment, so that the user equipment performs uplink control channel transmission on the resource block indicated by the resource sequence number.
- the uplink signal receiving unit 1401 receives the uplink signal transmitted by the user equipment, wherein the uplink signal is a transmission performed on the resource block indicated by the resource sequence number.
- the resource block indicated by the resource sequence number is different from the resource block allocated by the cooperation node to other user equipments.
- the base station may further include: a first sending unit, configured to send, to the cooperative node, a resource sequence number used by the user equipment to perform resource block for performing uplink signal transmission, so that the cooperative node avoids allocating the resource when allocating resources The resource block indicated by the resource number.
- a first sending unit configured to send, to the cooperative node, a resource sequence number used by the user equipment to perform resource block for performing uplink signal transmission, so that the cooperative node avoids allocating the resource when allocating resources The resource block indicated by the resource number.
- the base station may further include: a second sending unit, configured to send, to the cooperation node, a resource set that includes a resource sequence number used by the user equipment to perform uplink signal transmission, so that the coordinated node is allocated Avoid resource allocations indicated by the resource sequence number when the resource is used.
- a second sending unit configured to send, to the cooperation node, a resource set that includes a resource sequence number used by the user equipment to perform uplink signal transmission, so that the coordinated node is allocated Avoid resource allocations indicated by the resource sequence number when the resource is used.
- the CoMP user equipment and the neighboring cell user equipment are allocated different resource blocks; the orthogonality of the uplink control channel transmission can be ensured, thereby further reducing the neighboring cell user equipment. interference.
- the embodiment of the present invention also provides a computer readable program, wherein when the program is executed in a base station, the program causes a computer to perform an uplink signal transmission method as described above in the base station.
- An embodiment of the present invention further provides a storage medium storing a computer readable program, wherein The computer readable program causes a computer to perform an uplink signal transmission method as described above in a base station.
- the embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a user equipment, the program causes a computer to perform an uplink signal transmission method as described above in the user equipment.
- Embodiments of the present invention also provide a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform an uplink signal transmission method as described above in a user equipment.
- the above apparatus and method of the present invention may be implemented by hardware or by hardware in combination with software.
- the present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps.
- the present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.
- One or more of the functional blocks described in the figures and/or one or more combinations of functional blocks may be implemented as a general purpose processor, digital signal processor (DSP) for performing the functions described herein.
- DSP digital signal processor
- ASIC application specific integrated circuit
- FPGA field programmable gate array
- One or more of the functional blocks described with respect to the figures and/or one or more combinations of functional blocks may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, multiple microprocessors One or more microprocessors in conjunction with DSP communication or any other such configuration.
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Abstract
The embodiments of the present invention provide an uplink signal transmission method, User Equipment (UE), and base station in a Coordinated Multi-point (CoMP) system. The uplink signal transmission method comprises that: a UE transmits uplink signals to a service point and a cooperating point, wherein the uplink signals transmitted by the UE maintain orthogonal to the uplink signals transmitted by the other UEs served by the cooperating point. The embodiments of the present invention can further decrease interferences between the UEs of neighbor cells, thus ensuring the performance of CoMP Multi-point reception.
Description
协作多点***中的上行信号传输方法、 用户设各以及基站 技术领域 Uplink signal transmission method, user equipment and base station in cooperative multipoint system
本发明涉及一种通信领域, 特别涉及一种协作多点***中的上行信 号传输方法、 用户设备以及基站。 背景技术 在 LTE-Advanced (LTE- A) ***中, 协作多点传输 /接收 (CoMP, Coordinated Multi-point Transmission/Reception )作为关键技术之一被纳入 到 LTE-A框架中。 协作多点传输场景利用地理位置相邻的传输点协作发 送信号给用户, 对于小区边缘用户, 尤其能改善信号质量, 扩大覆盖范 围。 CoMP 场景下, 参与数据传输 /接收的点 (TP/RP , Transmission Point/Reception Point)可以分为月艮务节点 serving point (类似于 LTE Rel-8 中月艮务小区 serving cell) 禾口协作节点 cooperating point。 The present invention relates to the field of communications, and in particular, to an uplink signal transmission method, a user equipment, and a base station in a coordinated multipoint system. Background Art In an LTE-Advanced (LTE-A) system, Coordinated Multi-point Transmission/Reception (CoMP) is included as one of the key technologies in the LTE-A framework. The coordinated multi-point transmission scenario uses the geographically adjacent transmission points to cooperatively transmit signals to the user, and especially for the cell edge users, the signal quality is improved and the coverage is expanded. In the CoMP scenario, the point of participation in data transmission/reception (TP/RP, Transmission Point/Reception Point) can be divided into the monthly service node serving point (similar to the servant cell in the LTE Rel-8). Cooperating point.
在对 CoMP标准化的过程中, 明确了 UL CoMP的研究点,其中重要 的一点是关于物理上行控制信道 (PUCCH , Physical Uplink Control Channel) 的增强, 包括资源利用率的提高和小区间强干扰的避免。 现有 用于 HARQ-ACK传输的 PUCCH格式 1/la/lb小区间的干扰是通过小区 特定的循环移位跳变(Cell-specific Cyclic Shift hopping )方式, 进行干扰 随机化从而保证每个小区内用户传输 PUCCH的性能。 In the process of standardizing CoMP, the research points of UL CoMP are clarified. The important point is the enhancement of Physical Uplink Control Channel (PUCCH), including the improvement of resource utilization and the avoidance of strong interference between cells. . Existing PUCCH format 1/la/lb inter-cell interference for HARQ-ACK transmission is performed by cell-specific Cyclic Shift hopping method to perform interference randomization to ensure users in each cell. Transmit PUCCH performance.
但是, 在实现本发明的过程中, 在具有不同小区标识的协作多点系 统中,对于 UL CoMP多个点(point) (包括 eNB, RRH等)接收 CoMP UE 的 PUCCH信号的情况, 不能保证 CoMP UE和其他 UE的上行传输信号 的正交性, 由此不能进一步减小邻小区 UE的干扰,无法保证 CoMP多点 接收的性能。 However, in the process of implementing the present invention, in a coordinated multipoint system with different cell identities, for a case where a plurality of UL CoMP points (including an eNB, an RRH, etc.) receive a PUCCH signal of a CoMP UE, CoMP cannot be guaranteed. The orthogonality of the uplink transmission signals of the UE and other UEs, so that the interference of the neighboring cell UE cannot be further reduced, and the performance of CoMP multipoint reception cannot be guaranteed.
应该注意, 上面对技术背景的介绍只是为了方便对本发明的技术方 案进行清楚、 完整的说明, 并方便本领域技术人员的理解而阐述的。 不 能仅仅因为这些方案在本发明的背景技术部分进行了阐述而认为上述技 术方案为本领域技术人员所公知。
发明内容 It should be noted that the above description of the technical background is only for the purpose of facilitating the clear and complete description of the technical solutions of the present invention, and is convenient for understanding by those skilled in the art. The above technical solutions are not considered to be well known to those skilled in the art simply because these aspects are set forth in the background section of the present invention. Summary of the invention
本发明实施例提供一种协作多点***中的上行信号传输方法、 用户 设备以及基站, 目的在于: 在具有不同小区标识的协作多点***中, 对 于多点接收上行信号的用户设备, 减少协作小区所服务的用户设备对其 的干扰。 An embodiment of the present invention provides an uplink signal transmission method, a user equipment, and a base station in a coordinated multipoint system, and aims to: reduce cooperation in a coordinated multipoint system with different cell identifiers for user equipment that receives uplink signals at multiple points. The interference from the user equipment served by the cell.
根据本发明实施例的一个方面, 提供一种协作多点***中的上行信 号传输方法, 其中所述协作多点***包括具有不同小区标识的服务节点 和协作节点、 以及由所述服务节点和协作节点服务的用户设备; 所述上 行信号传输方法包括: According to an aspect of an embodiment of the present invention, an uplink signal transmission method in a coordinated multipoint system is provided, wherein the coordinated multipoint system includes a service node and a cooperation node having different cell identifiers, and the service node and the collaboration The user equipment served by the node; the uplink signal transmission method includes:
所述用户设备向所述服务节点和协作节点传输上行信号, 其中所述 用户设备传输的上行信号与由所述协作节点服务的其他用户设备传输的 上行信号保持正交。 The user equipment transmits an uplink signal to the serving node and the cooperation node, wherein an uplink signal transmitted by the user equipment is orthogonal to an uplink signal transmitted by other user equipments served by the cooperation node.
根据本发明实施例的又一个方面, 提供一种协作多点***中的上行 信号传输方法, 其中所述协作多点***包括具有不同小区标识的服务节 点和协作节点、 以及由所述服务节点和协作节点服务的用户设备; 所述 上行信号传输方法包括: According to still another aspect of the embodiments of the present invention, an uplink signal transmission method in a coordinated multipoint system is provided, wherein the coordinated multipoint system includes a service node and a cooperation node having different cell identifiers, and by the service node and a user equipment served by the collaboration node; the uplink signal transmission method includes:
所述服务节点接收所述用户设备传输的上行信号, 其中所述用户设 备传输的上行信号与由所述协作节点服务的其他用户设备传输的上行信 号保持正交。 The serving node receives an uplink signal transmitted by the user equipment, where an uplink signal transmitted by the user equipment is orthogonal to an uplink signal transmitted by other user equipments served by the cooperation node.
根据本发明实施例的又一个方面, 提供一种用户设备, 应用于协作 多点***中, 其中所述协作多点***还包括具有不同小区标识的服务节 点和协作节点; 所述用户设备包括: According to still another aspect of the embodiments of the present invention, a user equipment is provided, which is applied to a coordinated multipoint system, where the coordinated multipoint system further includes a service node and a collaboration node having different cell identifiers;
上行信号传输单元, 其向所述服务节点和协作节点传输上行信号, 其中所述上行信号与由所述协作节点服务的其他用户设备传输的上行信 号保持正交。 An uplink signal transmission unit that transmits an uplink signal to the serving node and the cooperating node, wherein the uplink signal is orthogonal to an uplink signal transmitted by other user equipments served by the cooperating node.
根据本发明实施例的又一个方面, 提供一种基站, 应用于协作多点 ***中, 其中所述协作多点***还包括具有与所述基站不同的小区标识 的协作节点、 以及由所述基站和协作节点服务的用户设备; 所述基站包 括:
上行信号接收单元, 其接收所述用户设备传输的上行信号, 其中所 述用户设备传输的上行信号与由所述协作节点服务的其他用户设备传输 的上行信号保持正交。 According to still another aspect of the present invention, a base station is provided for use in a coordinated multipoint system, wherein the coordinated multipoint system further includes a cooperative node having a different cell identity from the base station, and the base station And a user equipment served by the collaboration node; the base station includes: An uplink signal receiving unit receives an uplink signal transmitted by the user equipment, where an uplink signal transmitted by the user equipment is orthogonal to an uplink signal transmitted by other user equipments served by the cooperation node.
根据本发明实施例的又一个方面, 提供一种计算机可读程序, 其中 当在用户设备中执行所述程序时, 所述程序使得计算机在所述用户设备 中执行如上所述的上行信号传输方法。 According to still another aspect of the embodiments of the present invention, a computer readable program is provided, wherein when the program is executed in a user equipment, the program causes a computer to execute an uplink signal transmission method as described above in the user equipment .
根据本发明实施例的又一个方面, 提供一种存储有计算机可读程序 的存储介质, 其中所述计算机可读程序使得计算机在用户设备中执行如 上所述的上行信号传输方法。 According to still another aspect of an embodiment of the present invention, a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform an uplink signal transmission method as described above in a user equipment.
根据本发明实施例的又一个方面, 提供一种计算机可读程序, 其中 当在基站中执行所述程序时, 所述程序使得计算机在所述基站中执行如 上所述的上行信号传输方法。 According to still another aspect of an embodiment of the present invention, a computer readable program is provided, wherein when the program is executed in a base station, the program causes a computer to perform an uplink signal transmission method as described above in the base station.
根据本发明实施例的又一个方面, 提供一种存储有计算机可读程序 的存储介质, 其中所述计算机可读程序使得计算机在基站中执行如上所 述的上行信号传输方法。 According to still another aspect of an embodiment of the present invention, a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform an uplink signal transmission method as described above in a base station.
本发明实施例的有益效果在于, 对于具有不同小区标识的协作多点 ***, 通过使进行多点协作的用户设备的上行传输信号、 与协作节点服 务的用户设备的上行传输信号保持正交性, 可以进一步减小相邻小区用 户设备的干扰, 从而保证 CoMP多点接收的性能。 An advantageous effect of the embodiment of the present invention is that, for a coordinated multipoint system with different cell identifiers, the uplink transmission signal of the user equipment that performs multi-point cooperation and the uplink transmission signal of the user equipment served by the cooperation node are orthogonal, The interference of the user equipment of the neighboring cell can be further reduced, thereby ensuring the performance of CoMP multipoint reception.
参照后文的说明和附图, 详细公开了本发明的特定实施方式, 指明 了本发明的原理可以被采用的方式。 应该理解, 本发明的实施方式在范 围上并不因而受到限制。 在所附权利要求的精神和条款的范围内, 本发 明的实施方式包括许多改变、 修改和等同。 Specific embodiments of the present invention are disclosed in detail with reference to the following description and the accompanying drawings. It should be understood that the embodiments of the invention are not limited in scope. The embodiments of the present invention include many variations, modifications, and equivalents within the scope of the appended claims.
针对一种实施方式描述和 /或示出的特征可以以相同或类似的方式在 一个或更多个其它实施方式中使用, 与其它实施方式中的特征相组合, 或替代其它实施方式中的特征。 Features described and/or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, in combination with, or in place of, features in other embodiments. .
应该强调, 术语"包括 /包含"在本文使用时指特征、 整件、 步骤或组 件的存在, 但并不排除一个或更多个其它特征、 整件、 步骤或组件的存 在或附加。
附图说明 It should be emphasized that the term "comprising" or "comprising", when used herein, refers to the presence of a feature, component, step or component, but does not exclude the presence or addition of one or more other features, components, steps or components. DRAWINGS
参照以下的附图可以更好地理解本发明的很多方面。 附图中的部件 不是成比例绘制的, 而只是为了示出本发明的原理。 为了便于示出和描 述本发明的一些部分, 附图中对应部分可能被放大或缩小。 Many aspects of the invention can be better understood with reference to the following drawings. The components in the figures are not drawn to scale, but only to illustrate the principles of the invention. In order to facilitate the illustration and description of some parts of the invention, the corresponding parts in the figures may be enlarged or reduced.
在本发明的一个附图或一种实施方式中描述的元素和特征可以与一 个或更多个其它附图或实施方式中示出的元素和特征相结合。 此外, 在 附图中, 类似的标号表示几个附图中对应的部件, 并可用于指示多于一 种实施方式中使用的对应部件。 Elements and features described in one of the figures or an embodiment of the invention may be combined with elements and features illustrated in one or more other figures or embodiments. In the accompanying drawings, like reference numerals refer to the
图 1是宏小区内存在具有不同小区 ID的低功率 RRH的异构网络的 示意图; 1 is a schematic diagram of a heterogeneous network in which a low-power RRH having different cell IDs exists in a macro cell;
图 2是上行 CoMP场景下协作多点接收的用户发送 PUCCH的小区 间干扰示意图; 2 is a schematic diagram of inter-cell interference of a PUCCH sent by a coordinated multi-point receiving in an uplink CoMP scenario;
图 3是具有常规循环前缀的 PUCCH格式 1/la/lb的帧结构示意图; 图 4是一个小区内用户设备之间 PUCCH格式 1/la/lb分别在数据区 域和导频区域相互正交的示意图; 3 is a schematic diagram of a frame structure of a PUCCH format 1/la/lb with a regular cyclic prefix; FIG. 4 is a schematic diagram of a PUCCH format 1/la/lb between user equipments in a cell being orthogonal to each other in a data region and a pilot region, respectively. ;
图 5是本发明实施例 1的上行信号传输方法的流程图; 5 is a flowchart of an uplink signal transmission method according to Embodiment 1 of the present invention;
图 6是本发明实施例 1的上行信号传输方法的又一流程图; 图 7是本发明实施例 1的上行信号传输方法的又一流程图; 图 8是本发明实施例 2的上行信号传输方法的又一流程图; 图 9是本发明实施例 2的上行信号传输方法的又一流程图; 图 10是本发明实施例 2的 FDM方式实现物理资源正交的示意图; 图 11是本发明实施例 3的用户设备的构成示意图; 6 is still another flowchart of the uplink signal transmission method according to Embodiment 1 of the present invention; FIG. 7 is still another flowchart of the uplink signal transmission method according to Embodiment 1 of the present invention; FIG. 8 is an uplink signal transmission according to Embodiment 2 of the present invention; FIG. 9 is a flowchart of an uplink signal transmission method according to Embodiment 2 of the present invention; FIG. 10 is a schematic diagram of orthogonality of physical resources implemented by the FDM method according to Embodiment 2 of the present invention; A schematic diagram of the configuration of the user equipment of Embodiment 3;
图 12是本发明实施例 3的用户设备的又一构成示意图; FIG. 12 is still another schematic structural diagram of a user equipment according to Embodiment 3 of the present invention; FIG.
图 13是本发明实施例 4的基站的构成示意图; Figure 13 is a block diagram showing the structure of a base station according to Embodiment 4 of the present invention;
图 14是本发明实施例 4的基站的又一构成示意图。 Figure 14 is a block diagram showing still another configuration of a base station according to Embodiment 4 of the present invention.
具体实施方式 detailed description
参照附图, 通过下面的说明书, 本发明的前述以及其它特征将变得 明显。 在说明书和附图中, 具体公开了本发明的特定实施方式, 其表明
了其中可以采用本发明的原则的部分实施方式, 应了解的是, 本发明不 限于所描述的实施方式, 相反, 本发明包括落入所附权利要求的范围内 的全部修改、 变型以及等同物。 The foregoing and other features of the invention will be apparent from the In the specification and the drawings, specific embodiments of the invention are specifically disclosed, which The present invention is not limited to the described embodiments, but the invention includes all modifications, variations and equivalents falling within the scope of the appended claims. .
在 3GPP LTE-A标准化过程中, 对于上下行 CoMP (UL/DL CoMP) 定义了四种场景: ( 1 )同构网络的站址间 CoMP (homogenous network with intra- site CoMP); (2)具有高发送功率无线远端单元 (RRH, Remote Radio Head)的同构网络; (3 )宏小区范围分布低功率 RRH的具有不同小区 ID 的异构网络场景; (4) 宏小区范围分布低功率 RRH 的具有相同小区 ID 的异构网络场景。 In the 3GPP LTE-A standardization process, four scenarios are defined for the uplink and downlink CoMP (UL/DL CoMP): (1) CoMP (homogenous network with intra-site CoMP); (2) A homogeneous network of high-power radio remote units (RRHs); (3) heterogeneous network scenarios with different cell IDs for low-power RRHs distributed in macro cell range; (4) macro-cell range distribution low-power RRH A heterogeneous network scenario with the same cell ID.
在这四种场景中, 前面三种 CoMP场景中构成 CoMP集合的小区 / 点(cell/point)具有不同的小区 ID。为方便描述,这里均称为小区间 CoMP (inter-cell CoMP)。 In these four scenarios, the cells/points that constitute the CoMP set in the first three CoMP scenarios have different cell IDs. For convenience of description, it is referred to herein as inter-cell CoMP (inter-cell CoMP).
以 CoMP场景 3为例, 图 1是宏小区覆盖范围内存在具有不同小区 ID的低功率 RRH的异构网络的示意图。 如图 1所示, 低功率 RRH共存 于宏小区基站覆盖的范围, 但是 RRH和 eNB具有不同的小区 ID。 Taking CoMP scenario 3 as an example, FIG. 1 is a schematic diagram of a heterogeneous network in which a low-power RRH having different cell IDs exists in a macro cell coverage. As shown in Figure 1, the low-power RRH coexists in the coverage of the macro-cell base station, but the RRH and the eNB have different cell IDs.
本发明实施例仅以图 1所示的 LTE-A***中的 CoMP场景 3为例进 行说明, 但值得注意的是, 本发明实施例不限于此, 可以适用于任何具 有不同小区标识的协作多点***中。 The embodiment of the present invention is only described by using the CoMP scenario 3 in the LTE-A system shown in FIG. 1 as an example, but it should be noted that the embodiment of the present invention is not limited thereto, and may be applicable to any cooperation with different cell identifiers. Point system.
本发明实施例涉及 UL CoMP场景下用于 HARQ-ACK传输的物理上 行控制信道 (PUCCH, Physical Uplink Control Channel) 格式 1/1 a/lb的 小区间干扰问题。以下以 PUCCH格式 1/la/lb的数据区域为例进行说明, 但本发明不限于 PUCCH, 还可以适用于任何其他的上行信号传输。 The embodiment of the present invention relates to a small-area interference problem of a physical uplink control channel (PUCCH, Physical Uplink Control Channel) format 1/1 a/lb for HARQ-ACK transmission in a UL CoMP scenario. The following describes the data area of the PUCCH format 1/la/lb as an example. However, the present invention is not limited to the PUCCH, and can be applied to any other uplink signal transmission.
图 2是上行 CoMP场景下 PUCCH的小区间干扰示意图。 如图 2所 示, 在 CoMP场景 3下, macro eNB覆盖的范围内, 存在多个不同小区 ID的低功率 RRH。 其中, 处于 RRH1覆盖范围边缘的 macro用户设备 (UE, User Equipment) UE1的上行 PUCCH信号由 macro eNB和 RRH1 共同接收。 此时, RRH1覆盖范围内的传统单点服务的用户设备 UE2被 调度在相同的资源块 (RB, Resource Block) 上, 从而造成对 CoMP UE1 的干扰。 2 is a schematic diagram of inter-cell interference of a PUCCH in an uplink CoMP scenario. As shown in FIG. 2, in the CoMP scenario 3, there are multiple low-power RRHs of different cell IDs within the coverage of the macro eNB. The uplink PUCCH signal of the UE1 of the user equipment (UE, User Equipment) at the edge of the RRH1 coverage is jointly received by the macro eNB and the RRH1. At this time, the user equipment UE2 of the traditional single-point service within the coverage of the RRH1 is scheduled to be on the same resource block (RB), thereby causing interference to the CoMP UE1.
在 UL CoMP场景下, macro eNB是服务节点(serving point), RRH1
是协作节点 (cooperating point), 一般情况下协作节点与 CoMP UE之间 的路径损耗 (PL, Pathloss) 比服务节点到 CoMP UE的大, 其更容易受 干扰的影响。 In the UL CoMP scenario, the macro eNB is the serving node, RRH1. It is a cooperating point. In general, the path loss (PL, Pathloss) between the cooperative node and the CoMP UE is larger than that of the serving node to the CoMP UE, which is more susceptible to interference.
因此, 当协作节点的覆盖范围内存在在相同时频资源上发送上行控 制信号的用户设备时,例如图 2中的 UE2,其发送的 PUCCH信号造成对 CoMP UEl 的 PUCCH信号的干扰,从而恶化协作节点 RRH1解调 CoMP UEl的 PUCCH信号, UL CoMP下多点接收的增益很小。 Therefore, when there is a user equipment that transmits an uplink control signal on the same time-frequency resource in the coverage of the cooperative node, for example, UE2 in FIG. 2, the PUCCH signal transmitted by the UE causes interference to the PUCCH signal of the CoMP UE1, thereby deteriorating cooperation. The node RRH1 demodulates the PUCCH signal of the CoMP UE1, and the gain of the multipoint reception under the UL CoMP is small.
在现有 LTE Rel-8/9/lO标准中, PUCCH格式 1/la/lb用于 HARQ-ACK 比特传输。 图 3是具有常规循环前缀 (CP, cyclic prefix) 的 PUCCH格 式 1/la/lb帧结构示意图, 如图 3所示, 1个时隙 (slot) 中用于数据解调 的导频信号 (DMRS , demodulation reference signal ) 占用中间三个 SC-FDMA信号, PUCCH数据区域占用 4个符号。 In the existing LTE Rel-8/9/lO standard, PUCCH format 1/la/lb is used for HARQ-ACK bit transmission. 3 is a schematic diagram of a PUCCH format 1/la/lb frame structure having a regular cyclic prefix (CP), as shown in FIG. 3, a pilot signal (DMRS) for data demodulation in one slot (slot). , demodulation reference signal ) occupying the middle three SC-FDMA signals, the PUCCH data area occupies 4 symbols.
表 1示出了 PUCCH格式 1/la/lb小区内及小区间干扰消除方法, 如 表 1 所示: PUCCH 格式 1/la/lb 的资源通过由物理下行控制信道 (PDCCH, Physical Downlink Control Channel)指示的最低 CCE序号 nCCE 和高层信令指示的 N^OT共同决定, 即分配给用户用于传输 PUCCH格式 1/la/lb的资源序号为 wHeH = nCCE + N CCH。 Table 1 shows the PUCCH format 1/la/lb intra-cell and inter-cell interference cancellation method, as shown in Table 1: The PUCCH format 1/la/lb resource passes through the Physical Downlink Control Channel (PDCCH). The indicated minimum CCE sequence number n CCE and the N^ OT indicated by the high layer signaling are jointly determined, that is, the resource sequence number allocated to the user for transmitting the PUCCH format 1/la/lb is w H eH = n CCE + N CCH .
其中, 常规 CP下一个小区内用于 HARQ-ACK传输的 PUCCH格式 1/la/lb通过 6个频域上循环移位(CS, cyclic shift)和 3个时间长度为 4 的正交序列(orthogonal sequences)能够支持 1个 RB上 18个 PUCCH格 式 1/la/lb的同时同频资源传输, 与此同时, 通过小区特定的 SC-FDMA 符号间的 CS跳变(Cell-specific CS hopping over SC-FDMA symbol)达到 小区间的干扰随机化。 表 1 The PUCCH format 1/la/lb for the HARQ-ACK transmission in the next cell of the conventional CP passes through six cyclic shifts (CS, cyclic shift) and three orthogonal sequences of length 4 (orthogonal). Sequences can support simultaneous co-frequency resource transmission of 18 PUCCH formats 1/la/lb on 1 RB, and at the same time, CS-hopping between cell-specific SC-FDMA symbols (Cell-specific CS hopping over SC- FDMA symbol) achieves randomization of interference between cells. Table 1
PUCCH格式 资源指示 小区内干扰消除 小区间干扰随机化 PUCCH format resource indication small area interference cancellation small interval interference randomization
( Resource index) ( Resource index)
格式 1/la/lb n(1) = n + N(1) 常规 CP下, 6个 CS值, 小区特定的 SC-FDMA Format 1/la/lb n (1) = n + N (1) Under normal CP, 6 CS values, cell-specific SC-FDMA
3个长度为 4的正交序 之间 CS跳变 3 orthogonal sequences of length 4 between CS jumps
列; 18个 UE的正交
图 4给出了一个小区内用户之间 PUCCH格式 1/la/lb相互正交的示 意图, 如图 4所示, 一个小区中具有相同的小区标识, 被调度到相同时 频资源的两个用户发送 PUCCH格式 1/la/lb时采用相同的基序列, 在两 个用户采用相同循环移位的情况下, 可以通过不同的正交码 (OCC , Orthogonal Cover Code)使得 UEl和 UE2的 PUCCH格式 1/la/lb以 CDM 方式复用并且正交。 Column; orthogonality of 18 UEs Figure 4 shows a schematic diagram of PUCCH format 1/la/lb mutually orthogonal among users in a cell. As shown in Figure 4, two cells with the same cell identity in one cell are scheduled to the same time-frequency resource. The same base sequence is used when transmitting PUCCH format 1/la/lb. In the case where two users adopt the same cyclic shift, PUCCH format 1 of UE1 and UE2 can be made by different orthogonal codes (OCC, Orthogonal Cover Code). /la/lb is multiplexed and orthogonal in CDM mode.
对于具有不同小区标识的异构网络,仍然可以通过设计 CoMP UE与 协作节点用户间正交的 PUCCH序列 (包括数据区域和 DMRS区域) 消 除协作节点覆盖范围的用户对 CoMP UE的干扰,从而提高上行 CoMP场 景多点接收 PUCCH信号的性能。 For a heterogeneous network with different cell identifiers, the PUCCH sequence (including the data region and the DMRS region) that is orthogonal between the CoMP UE and the cooperating node user can be designed to eliminate interference of the CoMP UE by the user of the cooperative node, thereby improving the uplink. The CoMP scene receives the performance of the PUCCH signal at multiple points.
实施例 1 Example 1
本发明实施例提供一种协作多点***中的上行信号传输方法, 其中 协作多点***包括具有不同小区标识的服务节点和协作节点、 以及由服 务节点和协作节点服务的用户设备。 以下从用户设备侧对该上行信号传 输方法进行说明。 Embodiments of the present invention provide an uplink signal transmission method in a coordinated multipoint system, where a coordinated multipoint system includes a service node and a collaboration node having different cell identifiers, and a user equipment served by the service node and the collaboration node. The uplink signal transmission method will be described below from the user equipment side.
图 5是本发明实施例的上行信号传输方法的流程图, 如图 5所示, 在用户设备侧, 该上行信号传输方法包括: FIG. 5 is a flowchart of an uplink signal transmission method according to an embodiment of the present invention. As shown in FIG. 5, on the user equipment side, the uplink signal transmission method includes:
步骤 501, 用户设备向服务节点和协作节点传输上行信号, 其中该用 户设备传输的上行信号与由协作节点服务的其他用户设备传输的上行信 号保持正交。 Step 501: The user equipment transmits an uplink signal to the serving node and the cooperation node, where the uplink signal transmitted by the user equipment is orthogonal to the uplink signal transmitted by other user equipments served by the cooperation node.
其中, 该服务节点可以为宏小区基站, 该协作节点可以为 RRH, 该 服务节点和该协作节点具有不同的小区标识。 但不限于此, 例如服务节 点和协作节点均可为宏小区基站, 联合为该用户设备服务。 可根据实际 情况确定协作多点***的具体构成。 The serving node may be a macro cell base station, and the cooperative node may be an RRH, and the serving node and the cooperative node have different cell identifiers. However, it is not limited thereto, for example, the service node and the cooperation node may both serve the macro cell base station to jointly serve the user equipment. The specific composition of the coordinated multipoint system can be determined according to the actual situation.
在一个实施例中, 可以采用码分复用 (CDM , Code Division Multiplexing)方式,实现 CoMP UE与协作节点服务的 UE之间的正交性。 该 CoMP UE和该由协作节点服务的 UE被调度到使用相同的时频资源。 In an embodiment, orthogonality between the CoMP UE and the UE served by the cooperative node may be implemented by using Code Division Multiplexing (CDM). The CoMP UE and the UE served by the cooperating node are scheduled to use the same time-frequency resource.
图 6是本发明实施例的上行信号传输方法的又一流程图。 如图 6所 示, 在用户设备侧, 所述上行控制信道传输方法包括: FIG. 6 is still another flowchart of an uplink signal transmission method according to an embodiment of the present invention. As shown in FIG. 6, on the user equipment side, the uplink control channel transmission method includes:
步骤 601,对用户设备的循环移位进行处理,使得在每一符号上该用
户设备的循环移位的跳变值、 与由协作节点服务的其他用户设备的循环 移位的跳变值之差不变; Step 601, processing a cyclic shift of the user equipment, so that the symbol is used on each symbol. The difference between the hopping value of the cyclic shift of the household device and the hopping value of the cyclic shift of other user equipments served by the cooperative node is unchanged;
步骤 602,该用户设备根据处理后的循环移位、 以及与其他用户设备 不同的正交序列, 向服务节点和协作节点传输上行信号。 Step 602: The user equipment transmits an uplink signal to the serving node and the cooperation node according to the processed cyclic shift and an orthogonal sequence different from other user equipments.
以下以该用户设备为图 2所示的 UE1、 该协作节点服务的其他用户 设备为图 2所示的 UE2为例进行举例说明。 如图 2所示, UE1发送的 PUCCH信号由 macro eNB和 RRHl接收, UE2属于 RRH1覆盖范围的单 点服务用户。 The UE2 shown in FIG. 2 and the other user equipments served by the cooperative node are exemplified by the UE2 shown in FIG. 2 as an example. As shown in FIG. 2, the PUCCH signal sent by the UE1 is received by the macro eNB and the RRH1, and the UE2 belongs to the single-point service user of the RRH1 coverage.
以一个子帧第一个时隙即 slot#0上传输的 PUCCH数据区域为例,假 定 1个天线端口, P = l, UE1发送的 PUCCH信号为: z1 (12 -\-n) = S1-w1 (m) · y1 {n),
Taking the PUCCH data area transmitted on the first time slot of one subframe, that is, slot #0, as an example, assuming one antenna port, P = l, the PUCCH signal transmitted by UE1 is: z 1 (12 -\-n) = S 1 -w 1 (m) · y 1 {n),
其中, 4是 UEl在 PUCCH格式 1/la/lb上传输的由 1比特或 2比特 ACK/NACK信息经 BPSK/QPSK调制的复值调制符号; S,是 UE1在 slot#0 上的加扰信号; 是由 Zad-off Chu序列产生的小区特定的基序列, 在 一个 RB上序列长度为 NS CT =12,基序列在一个时隙上不变; Ns p F ueeH =4表 示常规 PUCCH格式 1/la/lb在一个子帧每个时隙上所占的 SC-FDMA符 号数。 并且, A ,/)是 UE1 PUCCH基序列 的循环移位 CS值, 其在每 个 slot上的 SC-FDMA上进行跳变, 是时隙号, /是 SC-FDMA符号号, 对于 PUCCH格式 1/la/lb的数据传输, 一个时隙中, 对应 SC-FDMA符 号序号是 Z = {0,1,2,6}; wx = {Wl(m) I m = 0,1,...,NS P F UCCH -1} i UE1在 slot#0上传输 PUCCH数据符号所用的长度为 A ∞H的正交序列。
同理, UE2发送 PUCCH数据信号类似表达式可以为: (12 + = S2. w2(m) . y2 (w y2(") 2( ''》(") = · 2( '' ("Where 4 is a complex-valued modulation symbol modulated by BPSK/QPSK of 1-bit or 2-bit ACK/NACK information transmitted by UE1 in PUCCH format 1/la/lb; S is a scrambled signal of UE1 on slot#0 ; is a cell-specific base sequence generated by the Zad-off Chu sequence, the sequence length is N S CT =12 on one RB, and the base sequence is unchanged in one time slot; N s p F ueeH = 4 indicates the conventional PUCCH format 1/la/lb The number of SC-FDMA symbols occupied in each slot of a subframe. And, A, /) is a cyclic shift CS value of the UE1 PUCCH base sequence, which is hopped on the SC-FDMA on each slot, is a slot number, / is an SC-FDMA symbol number, for PUCCH format 1 /la/lb data transmission, in a time slot, the corresponding SC-FDMA symbol number is Z = {0,1,2,6}; w x = { Wl (m) I m = 0,1,... , N S P F UCCH -1} i The orthogonal sequence of length A ∞H used by UE1 to transmit PUCCH data symbols on slot #0. Similarly, UE2 sends a PUCCH data signal similar expression can be: (12 + = S 2 . w 2 (m) . y 2 (wy 2 (") 2( ''"(") = · 2( '' ( "
" = 0,..., CCH- 1, CCH =12 在 slot#0上, UE1和 UE2的 PUCCH数据信号的互相关性为: " = 0,..., CCH - 1, CCH =12 On slot #0, the cross-correlation of the PUCCH data signals of UE1 and UE2 is:
Ψ Χ-1 -1 Ψ Χ -1 -1
= ∑ (WSEQ xm + n)z2 (Nseq xm + n) + (WSEQ xm + n)z2 (Nseq xm + n) + = ∑ (W SEQ xm + n)z 2 (N seq xm + n) + (W SEQ xm + n)z 2 (N seq xm + n) +
∑ (Ns PrH + ") *( CH ∑ (A CH + ") *(A CHx + W) + (12 + ra) * (12 + ?Ϊ) + (24 + ?Ϊ) * (24 + ra) + (36 + ra) * (36 + ra)
进一步, 式 (3) 可以转化为 ψ = (") +∑ (12 + ")¾*(l2 + ") +∑ (24 + ")¾*(24 + ") +∑ (36 + w)¾*(36 + /i)∑ (N s P r H + ") *( CH ∑ (A CH + ") *(A CH x + W) + (12 + ra) * (12 + ?Ϊ) + (24 + ?Ϊ) * ( 24 + ra) + (36 + ra) * (36 + ra) Further, equation (3) can be converted to ψ = (") + ∑ (12 + ") 3⁄4 * (l 2 + ") + ∑ ( 24 + ") 3⁄4 * ( 24 + ") + ∑ (36 + w) 3⁄4 *(36 + /i)
^5152 1(m)w2(m)J1ii2*e;'(Gill~Gi2l)'1 (/i)^(/i)* + ^5152 1(m)w2(m)J1J^;(ffl2~Gi22)'1 (/i)^(/i)* ^5 1 5 2 1 (m)w 2 (m)J 1 ii 2 *e ; ' (Gill ~ Gi2l) ' 1 (/i)^(/i)* + ^5 1 5 2 1 (m)w 2 (m)J 1 J^ ;(ffl2 ~ Gi22) ' 1 (/i)^(/i)*
+ ^5152 1(m)w2(m)J1J2*e;(Gil3~Gi23)'1 (/i)^(/i)* + ^5152 1m)w2(m)J1J2*e;(Gil4~Gi24)'1 (/i)^(/i)* + ^5 1 5 2 1 (m)w 2 (m)J 1 J 2 *e ;(Gil3 ~ Gi23) ' 1 (/i)^(/i)* + ^5 1 5 2 1 m)w 2 (m) J 1 J 2 *e ; (Gil4 ~ Gi24) ' 1 (/i)^(/i)*
(4) 其中 {au,a12,a13,a14}禾口 {α21,α22,α23,α24}表示 UEl禾口 UE2所用的基序歹 ϋ 在 PUCCH格式 1/la/lb的数据区域 4个 SC-FDMA上的 CS跳变值。 (4) where {a u , a 12 , a 13 , a 14 } and { { 21 , α 22 , α 23 , α 24 } represent the sequence 歹ϋ used by UE1 and UE2 in PUCCH format 1/la/ The CS hop value on the four SC-FDMAs in the data area of lb.
在本实施例中, 在步骤 601 实施时, 可以对用户设备的循环移位进 行处理, 使得在每一符号上该用户设备的循环移位的跳变值、 与协作节 点服务的其他用户设备的循环移位的跳变值之差不变。 In this embodiment, when the step 601 is implemented, the cyclic shift of the user equipment may be processed, so that the hopping value of the cyclic shift of the user equipment on each symbol, and other user equipments served by the cooperative node The difference between the transition values of the cyclic shift does not change.
以上述 UE1禾口 UE2为例 艮卩: u—a21 = al2 - 22 = al3 - 23 = al4 - 24 = Aa
由此, (4)式可以进一步表示为:
, 因为 Taking the above UE1 and UE2 as an example: u - a 21 = a l2 - 22 = a l3 - 23 = a l4 - 24 = Aa Thus, equation (4) can be further expressed as: Because
UE1 和 UE2 采用不同的正交序列, 即 和^2相互正交, 从而 二^^ )1!^^^^"1^^)^^ ^。 因此, 最终可以实现 UE1 和 UE2 的正交性。 UE1 and UE2 use different orthogonal sequences, that is, and ^ 2 are orthogonal to each other, so that ^^^ 1 ^^^^^^ 1 ^^)^^^. Therefore, the orthogonality between UE1 and UE2 can be finally realized. .
在一个实施方式中, 步骤 601具体可以包括: 将循环移位关闭, 停 止用户设备、 以及协作节点服务的被调度到与所述用户设备相同时频资 源的其他用户设备的循环移位的跳变。 即对于用户设备来说, 可以接收 服务节点发送的停止用户设备的循环移位的跳变的指令; 根据该指令关 闭用户设备的循环移位的跳变。 In an embodiment, the step 601 may specifically include: turning off the cyclic shift, stopping the cyclic shift of the user equipment, and other user equipments of the cooperative node service scheduled to the same time-frequency resource as the user equipment. . That is, for the user equipment, an instruction sent by the service node to stop the cyclic shift of the user equipment may be received; according to the instruction, the cyclic shift of the user equipment is turned off.
具体地, 可以关闭每个用户设备的 CS 跳变, g卩 UE-specific CS hopping disabling, it匕日寸, a = al2 = a13 = au , a2l = a22 = a23 = a24 , 从而 Specifically, the CS hopping of each user equipment can be turned off, g 卩 UE-specific CS hopping disabling, it 匕 day, a = a l2 = a 13 = a u , a 2l = a 22 = a 23 = a 24 Thus
= Aa。 = Aa.
在具体实施时, 可以由服务节点向用户设备 (例如 UE1 ) 发送关闭 CS跳变的指示, 可以通过高层信令指示。 用户设备接收到该指示后, 关 闭其发送 PUCCH格式 1/la/lb的 CS跳变功能。 于此同时, 服务节点通 过光纤连接 /X2接口等的 backhaul交互方式向协作节点发送关闭 CS跳变 的指示, 协作节点收到该指示后, 向其服务的与 UE1调度到相同时频资 源的用户设备(例如 UE2)发送关闭 CS跳变的指示, 可以通过高层信令 指示。 协作小区的用户设备收到该指示后, 关闭其发送的 PUCCH格式 1/la/lb的 CS跳变功能。 但不限于此, 可以根据实际情况确定具体的实 施方式。 In a specific implementation, the serving node may send an indication to the user equipment (for example, UE1) to disable the CS hopping, which may be indicated by higher layer signaling. After receiving the indication, the user equipment turns off the CS hopping function of the PUCCH format 1/la/lb. At the same time, the serving node sends an indication of turning off the CS hopping to the cooperating node through the backhaul interaction mode of the fiber connection/X2 interface, etc., after receiving the indication, the coordinating node dispatches the user to the same time-frequency resource that is served by the UE1. The device (eg, UE2) sends an indication to turn off the CS hop, which can be indicated by higher layer signaling. After receiving the indication, the user equipment of the coordinated cell turns off the CS hopping function of the PUCCH format 1/la/lb sent by the user equipment. However, it is not limited to this, and the specific implementation method can be determined according to the actual situation.
在另一个实施方式中, 步骤 601具体可以包括: 用户设备接收服务 节点发送的协作节点的小区标识; 根据接收到的协作节点的小区标识, 在每一符号上进行与协作节点小区标识相关的循环移位的跳变。 In another embodiment, the step 601 may include: receiving, by the user equipment, a cell identifier of the coordinated node sent by the serving node; performing, according to the received cell identifier of the coordinated node, a cycle related to the coordinated node cell identifier on each symbol. Shifting of the shift.
在具体实施时, 仍以上述 UE1和 UE2为例, CoMP UEl所在的服务 节点 macro eNB可以将协作节点 RRH1的小区 ID以动态或半静态方式告 诉 CoMP UEl o 由此, CoMP UE1 可以进行用户特定的 CS 跳变, 即 UE-specific CS hopping。
根据 Rel-8/9/10, 每个小区内用户的 cell-specific CS hopping由下式 达到:In a specific implementation, the UE1 and the UE2 are still used as an example, and the serving node macro eNB where the CoMP UE1 is located may notify the CoMP UE1 in a dynamic or semi-static manner, and the CoMP UE1 may perform user-specific CS hopping, ie UE-specific CS hopping. According to Rel-8/9/10, the cell-specific CS hopping of users in each cell is achieved by:
("s ,/)+ "; ("s ) · AST + (n^ (ns ) mod ) mod N' modN ,常规 CP n (n ) + [n'M- - A™ H + nJ( ) (ns )/2 ) mod N' modN , 扩展 CP (" s , / ) + ";(" s ) · AST + (n^ (n s ) mod ) mod N' modN , regular CP n (n ) + [n'M- - ATM H + nJ( ) (n s )/2 ) mod N' modN , extended CP
(6) 由(6)式可知, 每个 UE在一个 slot上每个 SC-FDMA上 CS的变化 取决于参数/ u("s,/); 而^ , ^^^^^^^") , 其中, 伪随机序 列 的初始值由小区 ID决定, 即 Cmit = NS11。 (6) From (6), the change of CS on each SC-FDMA per UE on a slot depends on the parameter / u (" s , /); and ^ , ^^^^^^^") Wherein, the initial value of the pseudo-random sequence is determined by the cell ID, that is, Cmit = NS 11 .
在本实施例中, CoMP UE1在获得 RRH1的小区标识 (RRH1_ID) 之后,不再进行 macro eNB小区标识特定的 CS跳变,其跳变值依据 RRH1 的小区标识而定, 从而进行该用户特定的 CS 跳变, 从而使得 UE1 在 SC-FDMA 符号上 CS 跳变情况取决于 RRH1 小区 ID 决定的 U( ,
·¾+8 + '·) -2' (其中 cinit = NRRHi ro )。 In this embodiment, after obtaining the cell identifier (RRH1_ID) of the RRH1, the CoMP UE1 does not perform the specific CS hopping of the macro eNB cell identifier, and the hop value is determined according to the cell identifier of the RRH1, thereby performing the user-specific CS hopping, so that the CS hopping of UE1 on the SC-FDMA symbol depends on the U(, determined by the RRH1 cell ID). · 3⁄4+8 + '·) -2' (where c init = NRRHi ro ).
而 UE2 进行与 LTE Rel-8/9/10 兼容的小区特定的 CS 跳变, 即 cell-specific CS hopping, g卩 UE2进行 CS跳变时, cinit = N^mjD。 UE2 performs cell-specific CS hopping compatible with LTE Rel-8/9/10, that is, cell-specific CS hopping, and g 卩 UE2 performs CS hopping, c init = N^ mjD .
由此, CoMP UE1的 CS在一个时隙每个 SC-FDMA上的变化幅度等 于 UE2 的 CS 在一个时隙每个 SC-FDMA 上的变化幅度, 即 a2l+ , 以此类推。 Thus, the variation of the CS of CoMP UE1 on each SC-FDMA in one slot is equal to the variation of the CS of UE2 on each SC-FDMA in one slot, ie a 2l + , and so on.
所以, 通过 CoMPUEl特定的 CS跳变, 可以使得 UE1与 UE2在每 个 SC-FDMA符号上 CS关系满足: Therefore, through the specific CS hopping of CoMPUE1, the CS relationship between UE1 and UE2 on each SC-FDMA symbol can be satisfied:
从而 ψ = (Wiw2 T )^ S.S^d^e^T^n)^ {n) = 0。 由上述实施例可知, 对于码分复用方式, 通过对用户设备的循环移 位进行处理, 使得在每一符号上该用户设备的循环移位的跳变值、 与协 作节点服务的其他用户设备的循环移位的跳变值之差不变; 同时两个用 户采用不同的正交码, 从而保证上行信号传输的正交性, 进一步减小相
邻小区用户设备的干扰。 Thus ψ = ( Wi w 2 T )^ SS^d^e^T^n)^ {n) = 0. It can be seen from the foregoing embodiment that, for the code division multiplexing mode, the cyclic shift of the user equipment is processed, so that the hopping value of the cyclic shift of the user equipment on each symbol, and other user equipments served by the cooperative node The difference between the hopping values of the cyclic shifts is unchanged; at the same time, the two users use different orthogonal codes to ensure the orthogonality of the uplink signal transmission, further reducing the phase Interference from user equipment in the neighboring cell.
在另一个实施例中, 可以采用频分复用 (FDM, Frequency Division Multiplexing)方式,实现 CoMP UE与协作节点服务的 UE之间的正交性。 In another embodiment, the orthogonality between the CoMP UE and the UE served by the cooperative node may be implemented by using a Frequency Division Multiplexing (FDM) mode.
图 7是本发明实施例的上行信号传输方法的又一流程图, 如图 7所 示, 所述上行信号传输方法包括: FIG. 7 is still another flowchart of the uplink signal transmission method according to the embodiment of the present invention. As shown in FIG. 7, the uplink signal transmission method includes:
步骤 701,用户设备根据服务节点发送的用于指示用户设备进行上行 信号传输所用资源块的资源序号, 进行上行信号的传输; 其中, 该资源 序号指示的资源块不同于由协作节点分配给其他用户设备的资源块。 Step 701: The user equipment performs uplink signal transmission according to the resource sequence number of the resource block used by the serving node to indicate the resource block used by the user equipment for uplink signal transmission, where the resource block indicated by the resource sequence number is different from the coordinated node to other users. The resource block of the device.
在本实施例中, 仍以图 2所示的场景为例, 通过构成 CoMP小区的 主小区 macro eNB与协作节点 RRH1之间 backhaul信令 (如通过光纤连 接或 X2接口) 交互, 可以给 CoMP UE1和邻小区用户设备分配不同的 PUCCH资源块, 从而实现 FDM方式的正交。 In this embodiment, the scenario shown in FIG. 2 is still taken as an example, and the backhaul signaling (such as through a fiber connection or an X2 interface) is exchanged between the primary cell macro eNB constituting the CoMP cell and the cooperative node RRH1, and the CoMP UE1 can be given. And the neighboring cell user equipment allocates different PUCCH resource blocks, thereby implementing orthogonality of the FDM mode.
如图 7所示, 在传输上行信号之前, 所述上行传输方法还可以包括: 步骤 702,用户设备接收服务节点发送的用于指示用户设备进行上行 信号传输所用资源块的资源序号。 As shown in FIG. 7, before the uplink signal is transmitted, the uplink transmission method may further include: Step 702: The user equipment receives a resource sequence number that is sent by the service node and is used to indicate a resource block used by the user equipment for uplink signal transmission.
由上述实施例可知, 对于频分复用方式, 通过给 CoMP用户设备和 协作节点服务的用户设备分配不同的资源块; 可以保证所述上行控制信 道传输的正交性, 从而进一步减小相邻小区用户设备的干扰。 It can be seen from the foregoing embodiment that, for the frequency division multiplexing mode, different resource blocks are allocated to the user equipment served by the CoMP user equipment and the cooperation node; the orthogonality of the uplink control channel transmission can be ensured, thereby further reducing the neighboring Interference from cell user equipment.
实施例 2 Example 2
本发明实施例提供一种协作多点***中的上行信号传输方法, 其中 协作多点***包括具有不同小区标识的服务节点和协作节点、 以及由服 务节点和协作节点服务的用户设备。 以下从基站侧对该上行信号传输方 法进行说明。 Embodiments of the present invention provide an uplink signal transmission method in a coordinated multipoint system, where a coordinated multipoint system includes a service node and a collaboration node having different cell identifiers, and a user equipment served by the service node and the collaboration node. The uplink signal transmission method will be described below from the base station side.
图 8是本发明实施例的上行信号传输方法的又一流程图。 如图 8所 示, 在基站侧, 所述上行信号传输方法包括: FIG. 8 is still another flowchart of an uplink signal transmission method according to an embodiment of the present invention. As shown in FIG. 8, on the base station side, the uplink signal transmission method includes:
步骤 801,服务节点接收用户设备传输的上行信号,其中该用户设备 传输的上行信号与由协作节点服务的其他用户设备传输的上行信号保持 正交。 Step 801: The serving node receives an uplink signal transmitted by the user equipment, where the uplink signal transmitted by the user equipment is orthogonal to the uplink signal transmitted by other user equipments served by the cooperation node.
在一个实施例中, 可以采用 CDM方式, 实现 CoMP UE与协作节点 服务的 UE之间的正交性。 该 CoMP UE和该由协作节点服务的 UE被调
度到使用相同的时频资源。 In an embodiment, the orthogonality between the CoMP UE and the UE served by the cooperative node may be implemented in a CDM manner. The CoMP UE and the UE served by the cooperative node are tuned To the same time-frequency resources.
在本实施例中, 该用户设备传输的上行信号根据处理后的循环移位、 以及与其他用户设备不同的正交序列发送; 其中在每一符号上处理后的 循环移位的跳变值、 与协作节点服务的其他用户设备的循环移位的跳变 值之差不变。 In this embodiment, the uplink signal transmitted by the user equipment is sent according to the cyclic shift after processing and an orthogonal sequence different from other user equipments; wherein the hop value of the cyclic shift after processing on each symbol, The difference between the hopping values of the cyclic shifts of other user equipments served by the cooperative node is unchanged.
在一个实施方式中, 在步骤 801之前, 该上行信号传输方法还可以 包括: 关闭每个用户设备的 CS跳变。 即服务节点可以向协作节点和用户 设备发送停止循环移位的跳变的指令, 以关闭该用户设备、 以及协作节 点所服务的占用与该用户设备相同时频资源的其他用户设备的循环移位 在另一个实施方式中, 在步骤 801之前, 该上行信号传输方法还可 以包括: 服务节点向用户设备发送协作节点的小区标识, 使得用户设备 根据协作节点的小区标识进行循环移位的跳变。 In an embodiment, before the step 801, the uplink signaling method may further include: turning off the CS hopping of each user equipment. That is, the serving node may send an instruction to stop the cyclically shifted hop to the cooperating node and the user equipment to turn off the cyclic shift of the user equipment and other user equipments served by the cooperative node occupying the same time-frequency resource as the user equipment. In another embodiment, before the step 801, the uplink signal transmission method may further include: the serving node sending the cell identifier of the cooperation node to the user equipment, so that the user equipment performs a cyclic shift hop according to the cell identifier of the cooperation node.
由上述实施例可知, 对于码分复用方式, 通过对用户设备的循环移 位进行处理, 使得在每一符号上该用户设备的循环移位的跳变值、 与协 作节点服务的其他用户设备的循环移位的跳变值之差不变; 同时两个用 户设备采用不同的正交码, 从而可以保证上行传输信号的正交性, 进一 步减小相邻小区用户设备的干扰。 It can be seen from the foregoing embodiment that, for the code division multiplexing mode, the cyclic shift of the user equipment is processed, so that the hopping value of the cyclic shift of the user equipment on each symbol, and other user equipments served by the cooperative node The difference between the hopping values of the cyclic shifts is unchanged; at the same time, the two user equipments adopt different orthogonal codes, thereby ensuring the orthogonality of the uplink transmission signals and further reducing the interference of the user equipment of the neighboring cells.
在另一个实施例中, 可以采用 FDM方式, 实现 CoMP UE与协作节 点服务的 UE之间的正交性。 In another embodiment, the orthogonality between the CoMP UE and the UE of the cooperative node service may be implemented in an FDM manner.
图 9是本发明实施例的上行信号传输方法的又一流程图, 如图 9所 示, 所述上行信号传输方法包括: FIG. 9 is still another flowchart of the uplink signal transmission method according to the embodiment of the present invention. As shown in FIG. 9, the uplink signal transmission method includes:
步骤 901,服务节点将用于指示用户设备进行上行信号传输所用资源 块的资源序号向该用户设备发送, 使得该用户设备在根据该资源序号所 指示的资源块上进行上行信号的传输; 其中, 该资源序号指示的资源块 不同于由协作节点分配给其他用户设备的资源块。 In step 901, the serving node sends a resource sequence number of the resource block used for the uplink signal transmission by the user equipment to the user equipment, so that the user equipment performs uplink signal transmission on the resource block indicated by the resource sequence number; The resource block indicated by the resource sequence number is different from the resource block allocated by the cooperation node to other user equipments.
在本实施例中, 仍以图 2所示的场景为例, 通过构成 CoMP小区的 主小区 macro eNB与协作节点 RRH1之间 backhaul信令 (如通过光纤连 接或 X2接口) 交互, 可以给 CoMP UE1和邻小区用户设备分配不同的 PUCCH资源块, 从而实现 FDM方式的正交。
图 10是本发明实施例的 FDM方式实现物理资源正交的示意图。 如 图 10所示,可以给 CoMP用户设备和邻小区用户设备分配不同的 PUCCH 资源块。 In this embodiment, the scenario shown in FIG. 2 is still taken as an example, and the backhaul signaling (such as through a fiber connection or an X2 interface) is exchanged between the primary cell macro eNB constituting the CoMP cell and the cooperative node RRH1, and the CoMP UE1 can be given. And the neighboring cell user equipment allocates different PUCCH resource blocks, thereby implementing orthogonality of the FDM mode. FIG. 10 is a schematic diagram of orthogonalizing physical resources by using the FDM method according to an embodiment of the present invention. As shown in FIG. 10, the CoMP user equipment and the neighbor cell user equipment may be allocated different PUCCH resource blocks.
在一个实施方式中, 在步骤 901之前, 所述上行信号传输方法还可 以包括: 服务节点将用于指示用户设备进行上行信号传输所用资源块的 资源序号向协作节点发送, 使得该协作节点在分配资源时避免分配该资 源序号所指示的资源块给其本小区服务的用户。 In an embodiment, before the step 901, the uplink signal transmission method may further include: the serving node sends the resource sequence number of the resource block used for instructing the user equipment to perform uplink signal transmission to the cooperation node, so that the collaboration node is allocated. The resource avoids allocating the resource block indicated by the resource sequence number to the user serving its own cell.
在具体实施时, 可以类似于 PUCCH格式 2/2a/2b及 PUCCH格式 3, 用于 CoMP UEl PUCCH格式 1/la/lb传输资源 通过高层信令告知用 户, CoMP UEl所在的服务节点 macro eNB将 CoMP UEl所用的 ieeH通 过 backhaul方式 (如光纤连接或 X2接口) 告诉 CoMP UE的协作节点 RRHl , RRH1在调度其本小区内部 UE (例如 UE2)的 PUCCH资源时, 从 RB资源块上与 CoMP UEl分开。 In a specific implementation, it may be similar to the PUCCH format 2/2a/2b and the PUCCH format 3, and the CoMP UE1 PUCCH format 1/la/lb transmission resource is used to notify the user through high layer signaling, and the service node macro eNB where the CoMP UE1 is located will be CoMP. The i eeH used by the UE1 tells the CoMP UE's cooperating node RRH1 through the backhaul mode (such as the fiber connection or the X2 interface), and the RRH1 separates from the CoMP UE1 from the RB resource block when scheduling the PUCCH resource of the UE (for example, UE2) of its own cell. .
在另一个实施方式中, 在步骤 901之前, 所述 PUCCH格式 1/la/lb 传输方法还可以包括: 服务节点将包含用于指示用户设备进行所述上行 控制信道传输所用资源块的资源序号的资源集向协作节点发送, 使得该 协作节点在分配资源时避免分配该资源序号所指示的资源块给其本小区 服务的用户。 In another embodiment, before the step 901, the PUCCH format 1/la/lb transmission method may further include: the serving node includes a resource sequence number indicating a resource block used by the user equipment to perform the uplink control channel transmission. The resource set is sent to the cooperation node, so that the cooperation node avoids allocating the resource block indicated by the resource sequence number to the user serving its own cell when allocating resources.
在具体实施时, 例如可以通过半静态方式划分一套资源 { CCH4 C - ^Η,Λ ^给 CoMP UE1 , 并将此套资源信息通过 backhauK如光纤连接或 X2接口)方式告诉 CoMP UE1的协作节点 RRH1, RRH1在调度其本小区用户设备(例如 UE2) 的 PUCCH资源时, 从物理 资源与 CoMP UEl分开。 In a specific implementation, for example, a set of resources { CCH4 C - ^ Η , Λ ^ is given to CoMP UE1 in a semi-static manner, and the set of resource information is communicated to the cooperative node of CoMP UE1 through a backhauK such as a fiber connection or an X2 interface. When the PUCCH resource of the user equipment (for example, UE2) of the own cell is scheduled, the RRH1 is separated from the CoMP UE1 by the physical resource.
由上述实施例可知, 对于频分复用方式, 通过给 CoMP用户设备和 协作节点服务的用户设备分配不同的资源块; 可以保证所述上行控制信 道传输的正交性, 从而进一步减小相邻小区用户设备的干扰。 It can be seen from the foregoing embodiment that, for the frequency division multiplexing mode, different resource blocks are allocated to the user equipment served by the CoMP user equipment and the cooperation node; the orthogonality of the uplink control channel transmission can be ensured, thereby further reducing the neighboring Interference from cell user equipment.
实施例 3 Example 3
本发明实施例提供一种用户设备, 应用于协作多点***中, 其中协 作多点***还包括具有不同小区标识的服务节点和协作节点。 与上述实 施例 1中方法相同的内容, 此处不再赘述。
图 11是本发明实施例的用户设备的构成示意图, 如图 11所示, 该 用户设备包括: 上行信号传输单元 1101。 其中, 上行信号传输单元 1101 向服务节点和协作节点传输上行信号, 其中该上行信号与由协作节点服 务的其他用户设备传输的上行信号保持正交。 The embodiment of the present invention provides a user equipment, which is applied to a coordinated multipoint system, where the coordinated multipoint system further includes a service node and a collaboration node having different cell identifiers. The same content as the method in Embodiment 1 above is not described herein. FIG. 11 is a schematic structural diagram of a user equipment according to an embodiment of the present invention. As shown in FIG. 11, the user equipment includes: an uplink signal transmission unit 1101. The uplink signal transmission unit 1101 transmits an uplink signal to the serving node and the cooperation node, where the uplink signal is orthogonal to the uplink signal transmitted by other user equipments served by the cooperation node.
在一个实施例中, 可以采用 CDM方式, 实现 CoMP UE与协作节点 服务的 UE之间的正交性。 该 CoMP UE和该由协作节点服务的 UE被调 度到使用相同的时频资源。 In one embodiment, the orthogonality between the CoMP UE and the UE served by the cooperative node may be implemented in a CDM manner. The CoMP UE and the UE served by the cooperating node are scheduled to use the same time-frequency resource.
图 12是本发明实施例的用户设备的又一构成示意图, 如图 12所示, 该用户设备包括: 循环移位处理单元 1201和上行信号传输单元 1202。 FIG. 12 is still another schematic diagram of the configuration of the user equipment according to the embodiment of the present invention. As shown in FIG. 12, the user equipment includes: a cyclic shift processing unit 1201 and an uplink signal transmission unit 1202.
其中, 循环移位处理单元 1201对该用户设备的循环移位进行处理, 使得在每一符号上该用户设备的循环移位的跳变值、 与协作节点服务的 其他用户设备的循环移位的跳变值之差不变; 上行信号传输单元 1202根 据处理后的循环移位、 以及与其他用户设备不同的正交序列, 向服务节 点和协作点传输上行信号。 The cyclic shift processing unit 1201 processes the cyclic shift of the user equipment, so that the hopping value of the cyclic shift of the user equipment on each symbol, and the cyclic shift of other user equipments served by the cooperative node The difference between the hopping values is unchanged; the uplink signal transmission unit 1202 transmits an uplink signal to the serving node and the coordination point according to the processed cyclic shift and the orthogonal sequence different from other user equipments.
在一个实施方式中, 循环移位处理单元 1201具体可以包括: 关闭指 令接收单元, 其接收服务节点发送的停止用户设备的循环移位的跳变的 指令; 循环移位关闭单元, 根据该指令关闭用户设备的循环移位的跳变。 In an embodiment, the cyclic shift processing unit 1201 may specifically include: a shutdown instruction receiving unit that receives an instruction sent by the service node to stop a cyclic shift of the user equipment; and a cyclic shift off unit, according to the instruction The jump of the cyclic shift of the user equipment.
在具体实施时, 循环移位关闭单元可以在接收到服务节点发送的关 闭 CS跳变的指示后, 关闭自身的 CS跳变功能。 而其他用户设备 (例如 UE2) 也可在接收到协作节点 (例如 RRH1 ) 发送的关闭 CS跳变的指示 后, 关闭自身的 CS跳变功能。 In a specific implementation, the cyclic shift off unit may turn off its CS jump function after receiving the indication of the closed CS transition sent by the serving node. Other user equipment (such as UE2) can also turn off its CS transition function after receiving an indication that the cooperative node (such as RRH1) sends off the CS transition.
在另一个实施方式中, 循环移位处理单元 1201具体可以包括: 小区 标识接收单元, 其接收服务节点发送的协作节点的小区标识; 循环移位 跳变单元, 其根据接收到的协作节点的小区标识, 在每一符号上进行循 环移位的跳变。 In another embodiment, the cyclic shift processing unit 1201 may specifically include: a cell identity receiving unit that receives a cell identity of the cooperation node sent by the service node; a cyclic shift hopping unit, according to the received cell of the cooperation node Identification, a jump that is cyclically shifted on each symbol.
由上述实施例可知, 对于码分复用方式, 通过对用户设备的循环移 位进行处理, 使得在每一符号上该用户设备的循环移位的跳变值、 与协 作节点服务的其他用户设备的循环移位的跳变值之差不变; 同时两个用 户设备采用不同的正交码, 从而可以保证上行传输信号的正交性, 进一 步减小相邻小区用户设备的干扰。
在另一个实施例中, 可以采用 FDM方式, 实现 CoMP UE与协作节 点服务的 UE之间的正交性。 上行信号传输单元 1101具体可以包括: 根 据服务节点发送的用于指示用户设备进行上行信号传输所用资源块的资 源序号, 进行上行信号的传输; 其中, 该资源序号指示的资源块不同于 由协作节点分配给其他用户设备的资源块。 It can be seen from the foregoing embodiment that, for the code division multiplexing mode, the cyclic shift of the user equipment is processed, so that the hopping value of the cyclic shift of the user equipment on each symbol, and other user equipments served by the cooperative node The difference between the hopping values of the cyclic shifts is unchanged; at the same time, the two user equipments adopt different orthogonal codes, thereby ensuring the orthogonality of the uplink transmission signals and further reducing the interference of the user equipment of the neighboring cells. In another embodiment, the orthogonality between the CoMP UE and the UE served by the cooperative node may be implemented in an FDM manner. The uplink signal transmission unit 1101 may specifically include: transmitting, according to the resource sequence number of the resource block used by the serving node to indicate the resource block used by the user equipment for uplink signal transmission, where the resource block indicated by the resource sequence number is different from the coordinated node. A resource block that is assigned to other user devices.
在具体实施时, 该用户设备还可以包括: 资源序号接收单元, 其接 收服务节点发送的用于指示用户设备进行上行信号传输所用资源块的资 源序号。 In a specific implementation, the user equipment may further include: a resource sequence number receiving unit, where the resource sequence number sent by the service node for indicating the resource block used by the user equipment for uplink signal transmission is received.
由上述实施例可知, 对于频分复用方式, 通过给 CoMP用户设备和 协作节点服务的用户设备分配不同的资源块; 可以保证所述上行控制信 道传输的正交性, 从而进一步减小相邻小区用户设备的干扰。 It can be seen from the foregoing embodiment that, for the frequency division multiplexing mode, different resource blocks are allocated to the user equipment served by the CoMP user equipment and the cooperation node; the orthogonality of the uplink control channel transmission can be ensured, thereby further reducing the neighboring Interference from cell user equipment.
实施例 4 Example 4
本发明实施例还提供一种基站, 应用于协作多点***中, 其中, 协 作多点***还包括具有与该服务节点不同的小区标识的协作节点、 以及 由该基站和协作节点服务的用户设备。 与上述实施例 2 中方法相同的内 容, 此处不再赘述。 The embodiment of the present invention further provides a base station, which is applied to a coordinated multipoint system, where the coordinated multipoint system further includes a cooperation node having a cell identity different from the service node, and a user equipment served by the base station and the collaboration node. . The same as the method in the above embodiment 2, and details are not described herein again.
图 13是本发明实施例的基站的构成示意图, 如图 13所示, 所述基 站包括: 上行信号接收单元 1301。 其中, 上行信号接收单元 1301接收用 户设备传输的上行信号, 其中该用户设备传输的上行信号与由协作节点 服务的其他用户设备传输的上行信号保持正交。 FIG. 13 is a schematic structural diagram of a base station according to an embodiment of the present invention. As shown in FIG. 13, the base station includes: an uplink signal receiving unit 1301. The uplink signal receiving unit 1301 receives the uplink signal transmitted by the user equipment, where the uplink signal transmitted by the user equipment is orthogonal to the uplink signal transmitted by other user equipments served by the cooperative node.
在一个实施例中, 可以采用 CDM方式, 实现 CoMP UE与协作节点 服务的 UE之间的正交性。 该 CoMP UE和该由协作节点服务的 UE被调 度到使用相同的时频资源。 In one embodiment, the orthogonality between the CoMP UE and the UE served by the cooperative node may be implemented in a CDM manner. The CoMP UE and the UE served by the cooperating node are scheduled to use the same time-frequency resource.
其中, 上行信号接收单元 1301接收该用户设备根据处理后的循环移 位发送的上行信号; 其中在每一符号上, 该处理后的循环移位的跳变值、 与协作节点服务的其他用户设备的循环移位的跳变值之差不变。 The uplink signal receiving unit 1301 receives the uplink signal sent by the user equipment according to the processed cyclic shift; wherein, on each symbol, the processed cyclic shift hop value and other user equipments served by the cooperative node The difference between the transition values of the cyclic shifts is constant.
在一个实施方式中, 该基站还可以包括: 关闭指令发送单元, 其向 协作节点和用户设备发送停止循环移位的跳变的指令, 以关闭该用户设 备、 以及其他用户设备的循环移位的跳变。 In an embodiment, the base station may further include: a shutdown instruction sending unit that sends an instruction to stop the cyclic shifting hopping to the cooperation node and the user equipment to turn off the cyclic shift of the user equipment and other user equipments Jump.
在另一个实施方式中, 所述基站还可以包括: 小区标识发送单元,
其向该用户设备发送协作节点的小区标识, 使得该用户设备根据协作节 点的小区标识进行循环移位的跳变。 In another embodiment, the base station may further include: a cell identifier sending unit, It sends the cell identifier of the cooperation node to the user equipment, so that the user equipment performs a cyclic shift hop according to the cell identifier of the cooperation node.
由上述实施例可知, 对于码分复用方式, 通过对用户设备的循环移 位进行处理, 使得在每一符号上该用户设备的循环移位的跳变值、 与协 作节点服务的其他用户设备的循环移位的跳变值之差不变; 可以保证上 行传输信号的正交性, 从而进一步减小相邻小区用户设备的干扰。 It can be seen from the foregoing embodiment that, for the code division multiplexing mode, the cyclic shift of the user equipment is processed, so that the hopping value of the cyclic shift of the user equipment on each symbol, and other user equipments served by the cooperative node The difference between the hopping values of the cyclic shifts is unchanged; the orthogonality of the uplink transmission signals can be ensured, thereby further reducing the interference of the user equipment of the neighboring cells.
在另一个实施例中, 可以采用 FDM方式, 实现 CoMP UE与协作节 点服务的 UE之间的正交性。 In another embodiment, the orthogonality between the CoMP UE and the UE of the cooperative node service may be implemented in an FDM manner.
图 14是本发明实施例的基站的又一构成示意图, 如图 14所示, 所 述基站 1400包括: 上行信号接收单元 1401和资源序号发送单元 1402。 FIG. 14 is a schematic diagram of still another structure of a base station according to an embodiment of the present invention. As shown in FIG. 14, the base station 1400 includes: an uplink signal receiving unit 1401 and a resource sequence number transmitting unit 1402.
其中, 资源序号发送单元 1402将用于指示用户设备进行上行控制信 道传输所用资源块的资源序号向用户设备发送, 使得该用户设备在由该 资源序号所指示的资源块上进行上行控制信道的传输。 而上行信号接收 单元 1401接收用户设备传输的上行信号, 其中该上行信号是在根据该资 源序号所指示的资源块上进行的传输。 其中, 该资源序号指示的资源块 不同于由协作节点分配给其他用户设备的资源块。 The resource sequence number sending unit 1402 sends a resource sequence number for indicating a resource block used by the user equipment to perform uplink control channel transmission to the user equipment, so that the user equipment performs uplink control channel transmission on the resource block indicated by the resource sequence number. . The uplink signal receiving unit 1401 receives the uplink signal transmitted by the user equipment, wherein the uplink signal is a transmission performed on the resource block indicated by the resource sequence number. The resource block indicated by the resource sequence number is different from the resource block allocated by the cooperation node to other user equipments.
在一个实施方式中, 所述基站还可以包括: 第一发送单元, 其将用 于指示用户设备进行上行信号传输所用资源块的资源序号向协作节点发 送, 使得协作节点在分配资源时避免分配该资源序号所指示的资源块。 In an embodiment, the base station may further include: a first sending unit, configured to send, to the cooperative node, a resource sequence number used by the user equipment to perform resource block for performing uplink signal transmission, so that the cooperative node avoids allocating the resource when allocating resources The resource block indicated by the resource number.
在另一个实施方式中, 所述基站还可以包括: 第二发送单元, 其将 包含用于指示用户设备进行上行信号传输所用资源块的资源序号的资源 集向协作节点发送, 使得协作节点在分配资源时避免分配该资源序号所 指示的资源块。 In another embodiment, the base station may further include: a second sending unit, configured to send, to the cooperation node, a resource set that includes a resource sequence number used by the user equipment to perform uplink signal transmission, so that the coordinated node is allocated Avoid resource allocations indicated by the resource sequence number when the resource is used.
由上述实施例可知, 对于频分复用方式, 通过给 CoMP用户设备和 邻小区用户设备分配不同的资源块; 可以保证上行控制信道传输的正交 性, 从而进一步减小相邻小区用户设备的干扰。 It can be seen that, in the frequency division multiplexing mode, the CoMP user equipment and the neighboring cell user equipment are allocated different resource blocks; the orthogonality of the uplink control channel transmission can be ensured, thereby further reducing the neighboring cell user equipment. interference.
本发明实施例还提供一种计算机可读程序, 其中当在基站中执行所 述程序时, 所述程序使得计算机在所述基站中执行如上所述的上行信号 传输方法。 The embodiment of the present invention also provides a computer readable program, wherein when the program is executed in a base station, the program causes a computer to perform an uplink signal transmission method as described above in the base station.
本发明实施例还提供一种存储有计算机可读程序的存储介质, 其中
所述计算机可读程序使得计算机在基站中执行如上所述的上行信号传输 方法。 An embodiment of the present invention further provides a storage medium storing a computer readable program, wherein The computer readable program causes a computer to perform an uplink signal transmission method as described above in a base station.
本发明实施例还提供一种计算机可读程序, 其中当在用户设备中执 行所述程序时, 所述程序使得计算机在所述用户设备中执行如上所述的 上行信号传输方法。 The embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a user equipment, the program causes a computer to perform an uplink signal transmission method as described above in the user equipment.
本发明实施例还提供一种存储有计算机可读程序的存储介质, 其中 所述计算机可读程序使得计算机在用户设备中执行如上所述的上行信号 传输方法。 Embodiments of the present invention also provide a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform an uplink signal transmission method as described above in a user equipment.
本发明以上的装置和方法可以由硬件实现, 也可以由硬件结合软件 实现。 本发明涉及这样的计算机可读程序, 当该程序被逻辑部件所执行 时, 能够使该逻辑部件实现上文所述的装置或构成部件, 或使该逻辑部 件实现上文所述的各种方法或步骤。 本发明还涉及用于存储以上程序的 存储介质, 如硬盘、 磁盘、 光盘、 DVD、 flash存储器等。 The above apparatus and method of the present invention may be implemented by hardware or by hardware in combination with software. The present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps. The present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.
针对附图中描述的功能方框中的一个或多个和 /或功能方框的一个或 多个组合, 可以实现为用于执行本申请所描述功能的通用处理器、 数字 信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA) 或者其它可编程逻辑器件、 分立门或者晶体管逻辑器件、 分立硬件组件 或者其任意适当组合。 针对附图描述的功能方框中的一个或多个和 /或功 能方框的一个或多个组合, 还可以实现为计算设备的组合, 例如, DSP 和微处理器的组合、 多个微处理器、 与 DSP通信结合的一个或多个微处 理器或者任何其它这种配置。 One or more of the functional blocks described in the figures and/or one or more combinations of functional blocks may be implemented as a general purpose processor, digital signal processor (DSP) for performing the functions described herein. An application specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any suitable combination thereof. One or more of the functional blocks described with respect to the figures and/or one or more combinations of functional blocks may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, multiple microprocessors One or more microprocessors in conjunction with DSP communication or any other such configuration.
以上结合具体的实施方式对本发明进行了描述, 但本领域技术人员 应该清楚, 这些描述都是示例性的, 并不是对本发明保护范围的限制。 本领域技术人员可以根据本发明的精神和原理对本发明做出各种变型和 修改, 这些变型和修改也在本发明的范围内。
The present invention has been described in connection with the specific embodiments thereof, and it should be understood by those skilled in the art that these descriptions are not intended to limit the scope of the invention. A person skilled in the art can make various modifications and changes to the invention in accordance with the spirit and the principles of the invention, which are also within the scope of the invention.
Claims
1、 一种协作多点***中的上行信号传输方法, 其中所述协作多点系 统包括具有不同小区标识的服务节点和协作节点、 以及由所述服务节点 和协作节点服务的用户设备; 所述上行信号传输方法包括: An uplink signal transmission method in a coordinated multipoint system, wherein the coordinated multipoint system includes a service node and a cooperation node having different cell identifiers, and user equipments served by the service node and the collaboration node; The uplink signal transmission method includes:
所述用户设备向所述服务节点和协作节点传输上行信号, 其中所述 用户设备传输的上行信号与由所述协作节点服务的其他用户设备传输的 上行信号保持正交。 The user equipment transmits an uplink signal to the serving node and the cooperation node, wherein an uplink signal transmitted by the user equipment is orthogonal to an uplink signal transmitted by other user equipments served by the cooperation node.
2、 根据权利要求 1所述的上行信号传输方法, 其中, 在所述用户设 备向所述服务节点和协作节点传输上行信号之前, 所述上行信号传输方 法还包括: The uplink signal transmission method according to claim 1, wherein before the user equipment transmits an uplink signal to the serving node and the cooperation node, the uplink signal transmission method further includes:
对所述用户设备的循环移位进行处理, 使得在每一符号上所述用户 设备的循环移位的跳变值、 与由所述协作节点服务的其他用户设备的循 环移位的跳变值之差不变; Processing a cyclic shift of the user equipment such that a hopping value of the cyclic shift of the user equipment on each symbol, a hopping value of a cyclic shift of other user equipment served by the cooperative node The difference is the same;
并且, 所述用户设备根据处理后的循环移位、 以及与所述其他用户 设备不同的正交序列, 向所述服务节点和协作节点传输上行信号。 And, the user equipment transmits an uplink signal to the serving node and the cooperative node according to the cyclic shift after processing and an orthogonal sequence different from the other user equipment.
3、 根据权利要求 2所述的上行信号传输方法, 其中, 对所述用户设 备的循环移位进行处理具体包括: The uplink signal transmission method according to claim 2, wherein the processing of the cyclic shift of the user equipment specifically includes:
接收所述服务节点发送的停止所述用户设备的循环移位的跳变的指 根据所述指令关闭所述用户设备的循环移位的跳变。 Receiving, by the service node, a hopping to stop a cyclic shift of the user equipment, according to the instruction, turning off a hopping of the cyclic shift of the user equipment.
4、 根据权利要求 2所述的上行信号传输方法, 其中, 对所述用户设 备的循环移位进行处理具体包括: The uplink signal transmission method according to claim 2, wherein the processing of the cyclic shift of the user equipment specifically includes:
接收所述服务节点发送的所述协作节点的小区标识; Receiving, by the serving node, a cell identifier of the coordinated node;
根据接收到的所述协作节点的小区标识, 在每一符号上进行循环移 Performing a cyclic shift on each symbol according to the received cell identifier of the coordinated node
、 ,
5 根据权利要求 1所述的上行信号传输方法, 其中, 所述用户设备 向所述服务节点和协作节点传输上行信号具体包括: The uplink signal transmission method according to claim 1, wherein the transmitting, by the user equipment, the uplink signal to the serving node and the cooperation node includes:
所述用户设备根据所述服务节点发送的用于指示所述用户设备进行 上行信号传输所用资源块的资源序号, 进行上行信号的传输; 其中, 所述资源序号指示的资源块不同于由所述协作节点分配给所 述其他用户设备的资源块。 The user equipment performs uplink signal transmission according to the resource sequence number of the resource block used by the serving node to indicate that the user equipment performs uplink signal transmission; The resource block indicated by the resource sequence number is different from the resource block allocated by the coordinated node to the other user equipment.
6、 根据权利要求 5所述的上行信号传输方法, 其中, 在传输上行信 号之前, 所述上行传输方法还包括: The uplink signal transmission method according to claim 5, wherein, before the uplink signal is transmitted, the uplink transmission method further includes:
所述用户设备接收所述服务节点发送的用于指示所述用户设备进行 上行信号传输所用资源块的资源序号。 The user equipment receives a resource sequence number that is sent by the service node to indicate that the user equipment uses a resource block for uplink signal transmission.
7、 一种协作多点***中的上行信号传输方法, 其中所述协作多点系 统包括具有不同小区标识的服务节点和协作节点、 以及由所述服务节点 和协作节点服务的用户设备; 所述上行信号传输方法包括: 7. An uplink signal transmission method in a coordinated multipoint system, wherein the coordinated multipoint system comprises a service node and a collaboration node having different cell identifiers, and user equipment served by the service node and the collaboration node; The uplink signal transmission method includes:
所述服务节点接收所述用户设备传输的上行信号, 其中所述用户设 备传输的上行信号与由所述协作节点服务的其他用户设备传输的上行信 号保持正交。 The serving node receives an uplink signal transmitted by the user equipment, where an uplink signal transmitted by the user equipment is orthogonal to an uplink signal transmitted by other user equipments served by the cooperation node.
8、 根据权利要求 7所述的上行信号传输方法, 其中, 所述用户设备 传输的上行信号是根据处理后的循环移位、 以及与所述其他用户设备不 同的正交序列而发送的; The uplink signal transmission method according to claim 7, wherein the uplink signal transmitted by the user equipment is sent according to a cyclic shift after processing and an orthogonal sequence different from the other user equipments;
其中, 在每一符号上所述处理后的循环移位的跳变值、 与所述其他 用户设备的循环移位的跳变值之差不变。 The difference between the hopping value of the processed cyclic shift and the hopping value of the cyclic shift of the other user equipment on each symbol is unchanged.
9、 根据权利要求 8所述的上行信号传输方法, 其中, 所述上行信号 传输方法还包括: The uplink signal transmission method according to claim 8, wherein the uplink signal transmission method further includes:
所述服务节点向所述协作节点和所述用户设备发送停止循环移位的 跳变的指令, 以关闭所述用户设备、 以及所述其他用户设备的循环移位 The serving node sends an instruction to stop the cyclic shifting hop to the cooperative node and the user equipment to turn off the cyclic shift of the user equipment and the other user equipment
、 、 , ,
10, 根据权利要求 8所述的上行信号传输方法, 其中, 所述上行信 号传输方法还包括: The uplink signal transmission method according to claim 8, wherein the uplink signal transmission method further includes:
所述服务节点向所述用户设备发送所述协作节点的小区标识, 使得 所述用户设备根据所述协作节点的小区标识进行循环移位的跳变。 And the serving node sends the cell identifier of the coordinated node to the user equipment, so that the user equipment performs a cyclic shift hop according to the cell identifier of the coordinated node.
11、 根据权利要求 7所述的上行信号传输方法, 其中, 在接收所述 用户设备传输的上行信号之前, 所述上行传输方法还包括: The uplink signal transmission method according to claim 7, wherein, before receiving the uplink signal transmitted by the user equipment, the uplink transmission method further includes:
所述服务节点将用于指示所述用户设备进行上行信号传输所用资源 块的资源序号向所述用户设备发送, 使得所述用户设备在根据所述资源 序号所指示的资源块上进行上行信号的传输; The serving node sends a resource sequence number of the resource block used by the user equipment to perform uplink signal transmission to the user equipment, so that the user equipment is according to the resource The uplink signal is transmitted on the resource block indicated by the sequence number;
其中, 所述资源序号指示的资源块不同于由所述协作节点分配给所 述其他用户设备的资源块。 The resource block indicated by the resource sequence number is different from the resource block allocated by the coordinated node to the other user equipment.
12、 根据权利要求 11所述的上行信号传输方法, 其中, 所述上行信 号传输方法还包括: The uplink signal transmission method according to claim 11, wherein the uplink signal transmission method further includes:
所述服务节点将用于指示所述用户设备进行上行信号传输所用资源 块的资源序号向所述协作节点发送, 使得所述协作节点在分配资源时避 免分配所述资源序号所指示的资源块。 The serving node sends a resource sequence number of the resource block used for instructing the user equipment to perform uplink signal transmission to the coordinated node, so that the cooperative node avoids allocating resource blocks indicated by the resource sequence number when allocating resources.
13、 根据权利要求 11所述的上行信号传输方法, 其中, 所述上行信 号传输方法还包括: The uplink signal transmission method according to claim 11, wherein the uplink signal transmission method further includes:
所述服务节点将包含用于指示所述用户设备进行上行信号传输所用 资源块的资源序号的资源集向所述协作节点发送, 使得所述协作节点在 分配资源时避免分配所述资源序号所指示的资源块。 The serving node sends a resource set including a resource sequence number for indicating a resource block used by the user equipment for uplink signal transmission to the cooperation node, so that the cooperation node avoids allocating the resource sequence number when allocating resources Resource block.
14、 一种用户设备, 应用于协作多点***中, 其中所述协作多点系 统还包括具有不同小区标识的服务节点和协作节点; 所述用户设备包括: 上行信号传输单元, 其向所述服务节点和协作节点传输上行信号, 其中所述上行信号与由所述协作节点服务的其他用户设备传输的上行信 号保持正交。 A user equipment, which is applied to a coordinated multipoint system, wherein the coordinated multipoint system further includes a service node and a cooperation node having different cell identifiers; the user equipment includes: an uplink signal transmission unit, The serving node and the cooperating node transmit an uplink signal, wherein the uplink signal is orthogonal to an uplink signal transmitted by other user equipment served by the cooperating node.
15、根据权利要求 14所述的用户设备,其中,所述用户设备还包括: 循环移位处理单元, 其对所述用户设备的循环移位进行处理, 使得 在每一符号上所述用户设备的循环移位的跳变值、 与所述协作节点服务 的其他用户设备的循环移位的跳变值之差不变; The user equipment according to claim 14, wherein the user equipment further comprises: a cyclic shift processing unit that processes a cyclic shift of the user equipment such that the user equipment is on each symbol The difference between the hopping value of the cyclic shift and the hopping value of the cyclic shift of other user equipments served by the cooperative node is unchanged;
并且, 所述上行信号传输单元根据处理后的循环移位、 以及与所述 其他用户设备不同的正交序列, 向所述服务节点和协作节点传输上行信 号。 And, the uplink signal transmission unit transmits an uplink signal to the serving node and the cooperation node according to the cyclic shift after processing and an orthogonal sequence different from the other user equipment.
16、 根据权利要求 15所述的用户设备, 其中, 所述循环移位处理单 元具体包括: The user equipment according to claim 15, wherein the cyclic shift processing unit specifically includes:
关闭指令接收单元, 其接收所述服务节点发送的停止所述用户设备 的循环移位的跳变的指令; a shutdown instruction receiving unit that receives an instruction sent by the service node to stop a hopping of the cyclic shift of the user equipment;
循环移位关闭单元, 根据所述指令关闭所述用户设备的循环移位的 Cycling off the unit, turning off the cyclic shift of the user equipment according to the instruction
17、 根据权利要求 15所述的用户设备, 其中, 所述循环移位处理单 元具体包括: The user equipment according to claim 15, wherein the cyclic shift processing unit specifically includes:
小区标识接收单元, 其接收所述服务节点发送的所述协作节点的小 区标识; a cell identifier receiving unit, which receives a cell identifier of the collaboration node sent by the service node;
循环移位跳变单元, 其根据接收到的所述协作节点的小区标识, 在 每一符号上进行循环移位的跳变。 And a cyclic shift hopping unit that performs a cyclic shift hopping on each symbol according to the received cell identifier of the coordinated node.
18、 根据权利要求 14所述的用户设备, 其中, 所述上行信号传输单 元具体包括: 根据所述服务节点发送的用于指示所述用户设备进行上行 信号传输所用资源块的资源序号, 进行上行信号的传输; The user equipment according to claim 14, wherein the uplink signal transmission unit specifically includes: performing uplink according to a resource sequence number of the resource block used by the serving node to indicate that the user equipment performs uplink signal transmission Signal transmission;
其中, 所述资源序号指示的资源块不同于由所述协作节点分配给所 述其他用户设备的资源块。 The resource block indicated by the resource sequence number is different from the resource block allocated by the coordinated node to the other user equipment.
19、根据权利要求 18所述的用户设备,其中,所述用户设备还包括: 资源序号接收单元, 其接收所述服务节点发送的用于指示所述用户 设备进行上行信号传输所用资源块的资源序号。 The user equipment of claim 18, wherein the user equipment further comprises: a resource sequence number receiving unit, configured to receive, by the service node, a resource for indicating, by the user equipment, a resource block used for uplink signal transmission Serial number.
20、 一种基站, 应用于协作多点***中, 其中所述协作多点***还 包括具有与所述基站不同的小区标识的协作节点、 以及由所述基站和协 作节点服务的用户设备; 所述基站包括: 20. A base station, for use in a coordinated multipoint system, wherein the coordinated multipoint system further includes a cooperative node having a different cell identity from the base station, and a user equipment served by the base station and the cooperative node; The base station includes:
上行信号接收单元, 其接收所述用户设备传输的上行信号, 其中所 述用户设备传输的上行信号与由所述协作节点服务的其他用户设备传输 的上行信号保持正交。 And an uplink signal receiving unit, which receives an uplink signal transmitted by the user equipment, where an uplink signal transmitted by the user equipment is orthogonal to an uplink signal transmitted by other user equipments served by the cooperation node.
21、 根据权利要求 20所述的基站, 其中, 所述基站还包括: 关闭指令发送单元, 其向所述协作节点和所述用户设备发送停止循 环移位的跳变的指令, 以关闭所述用户设备、 以及所述其他用户设备的 循环移位的跳变。 The base station according to claim 20, wherein the base station further comprises: a shutdown instruction sending unit that sends an instruction to stop the cyclic shifting hop to the cooperative node and the user equipment to close the User equipment, and transitions of cyclic shifts of the other user equipment.
22、 根据权利要求 20所述的基站, 其中, 所述基站还包括: 小区标识发送单元, 其向所述用户设备发送所述协作节点的小区标 识, 使得所述用户设备根据所述协作节点的小区标识进行循环移位的跳 变。 The base station according to claim 20, wherein the base station further includes: a cell identity sending unit, configured to send, to the user equipment, a cell identifier of the coordinated node, so that the user equipment is configured according to the collaboration node The cell identifier performs a cyclic shift.
23、 根据权利要求 20所述的基站, 其中, 所述基站还包括: 资源序号发送单元, 其将用于指示所述用户设备进行上行信号传输 所用资源块的资源序号向所述用户设备发送, 使得所述用户设备在根据 所述资源序号所指示的资源块上进行上行信号的传输; The base station according to claim 20, wherein the base station further comprises: a resource sequence number sending unit, configured to send, to the user equipment, a resource sequence number of the resource block used by the user equipment to perform uplink signal transmission, so that the user equipment performs uplink on the resource block indicated by the resource sequence number Signal transmission;
其中, 所述资源序号指示的资源块不同于由所述协作节点分配给所 述其他用户设备的资源块。 The resource block indicated by the resource sequence number is different from the resource block allocated by the coordinated node to the other user equipment.
24、 根据权利要求 23所述的基站, 其中, 所述基站还包括: 第一发送单元, 其将用于指示所述用户设备进行上行信号传输所用 资源块的资源序号向所述协作节点发送, 使得所述协作节点在分配资源 时避免分配所述资源序号所指示的资源块。 The base station according to claim 23, wherein the base station further includes: a first sending unit, configured to send, to the cooperative node, a resource sequence number of a resource block used for instructing the user equipment to perform uplink signal transmission, The cooperative node is caused to avoid allocating resource blocks indicated by the resource sequence number when allocating resources.
25、 根据权利要求 23所述的基站, 其中, 所述基站还包括: 第二发送单元, 其将包含用于指示所述用户设备进行上行信号传输 所用资源块的资源序号的资源集向所述协作节点发送, 使得所述协作节 点在分配资源时避免分配所述资源序号所指示的资源块。 The base station according to claim 23, wherein the base station further includes: a second sending unit, configured to include a resource set for indicating a resource sequence of a resource block used by the user equipment for uplink signal transmission to The coordinating node sends, so that the cooperating node avoids allocating resource blocks indicated by the resource sequence number when allocating resources.
26、 一种计算机可读程序, 其中当在用户设备中执行所述程序时, 所述程序使得计算机在所述用户设备中执行如权利要求 1至 6任一项所 述的上行信号传输方法。 A computer readable program, wherein the program causes a computer to perform an uplink signal transmission method according to any one of claims 1 to 6 in the user equipment when the program is executed in a user equipment.
27、 一种存储有计算机可读程序的存储介质, 其中所述计算机可读 程序使得计算机在用户设备中执行如权利要求 1至 6任一项所述的上行 信号传输方法。 A storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform the uplink signal transmission method according to any one of claims 1 to 6 in a user equipment.
28、 一种计算机可读程序, 其中当在基站中执行所述程序时, 所述 程序使得计算机在所述基站中执行如权利要求 7至 13任一项所述的上行 信号传输方法。 A computer readable program, wherein the program causes a computer to perform the uplink signal transmission method according to any one of claims 7 to 13 in the base station when the program is executed in a base station.
29、 一种存储有计算机可读程序的存储介质, 其中所述计算机可读 程序使得计算机在基站中执行如权利要求 7至 13任一项所述的上行信号 传输方法。 A storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform the uplink signal transmission method according to any one of claims 7 to 13 in a base station.
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CN101867938A (en) * | 2009-04-20 | 2010-10-20 | 大唐移动通信设备有限公司 | Method and device for configuring uplink reference signal of multipoint cooperative transmission |
EP2264960A1 (en) * | 2009-06-19 | 2010-12-22 | Alcatel Lucent | Method and processing arrangement for joint processing of uplink data |
CN102026298A (en) * | 2009-09-22 | 2011-04-20 | 中兴通讯股份有限公司 | Method and system for eliminating SRS interference between different cell users in multi-point coordination |
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CN101867938A (en) * | 2009-04-20 | 2010-10-20 | 大唐移动通信设备有限公司 | Method and device for configuring uplink reference signal of multipoint cooperative transmission |
EP2264960A1 (en) * | 2009-06-19 | 2010-12-22 | Alcatel Lucent | Method and processing arrangement for joint processing of uplink data |
CN102026298A (en) * | 2009-09-22 | 2011-04-20 | 中兴通讯股份有限公司 | Method and system for eliminating SRS interference between different cell users in multi-point coordination |
CN102158449A (en) * | 2010-02-12 | 2011-08-17 | 华为技术有限公司 | Method, base station and terminal for generating reference signal |
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