WO2017143529A1 - Procédé et appareil d'émission de signaux, et dispositif terminal - Google Patents
Procédé et appareil d'émission de signaux, et dispositif terminal Download PDFInfo
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- WO2017143529A1 WO2017143529A1 PCT/CN2016/074425 CN2016074425W WO2017143529A1 WO 2017143529 A1 WO2017143529 A1 WO 2017143529A1 CN 2016074425 W CN2016074425 W CN 2016074425W WO 2017143529 A1 WO2017143529 A1 WO 2017143529A1
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- WIPO (PCT)
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- virtual resource
- resource block
- sub
- physical resource
- resource pool
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
Definitions
- the present invention relates to the field of communications technologies, and in particular, to a signal transmission method, apparatus, and terminal device.
- VRB virtual resource block
- PRB physical resource block
- the application provides a signal transmission method, device and terminal device, which can improve the effectiveness of signal transmission.
- the first aspect provides a signal transmission method, including:
- the VRB in the virtual resource pool is mapped to the PRB of the physical resource pool according to the mapping scheme of the VRB to the PRB.
- the signal is transmitted using the mapped PRB.
- the terminal device measures channel state information, and determines a mapping scheme of the VRB to the PRB according to the channel state information.
- the measurement of the channel state information requires at least 5 ms.
- the terminal device determines the mapping scheme of the VRB to the PRB according to the time domain correlation weight, the frequency domain correlation weight, and the number of the subbands included in the virtual resource pool, and does not need to measure channel state information, thereby saving channel state information. The measurement overhead and improve the effectiveness of signal transmission.
- the mapping scheme of the VRB to the PRB is determined according to the time domain correlation weight, the frequency domain correlation weight, and the number of subbands included in the virtual resource pool, including:
- the domain correlation weight is 1, and the frequency domain correlation weight is 0, it is determined whether the number of subbands included in the virtual resource pool is an even number.
- determining a frequency hopping distance between a PRB corresponding to the subband and the VRB of the slot and a PRB corresponding to the VRB of the subband and the previous slot of the slot Equal to 1/2*n.
- determining that the frequency hopping distance between the PRB corresponding to the sub-band and the VRB of the time slot and the PRB corresponding to the VRB of the sub-band and the subsequent time slot of the time slot is equal to 1/2*n-1.
- n is the number of sub-bands included in the virtual resource pool.
- the method further includes:
- determining a frequency hopping distance between a PRB corresponding to the subband and the VRB of the slot and a PRB corresponding to the VRB of the subband and the previous slot of the slot equal
- determining a frequency hopping distance between the PRB corresponding to the sub-band and the VRB of the time slot and the PRB corresponding to the VRB of the sub-band and the subsequent time slot of the time slot is equal to
- the mapping scheme of the VRB to the PRB is determined according to the time domain correlation weight, the frequency domain correlation weight, and the number of subbands included in the virtual resource pool.
- the domain correlation weight is 0 and the frequency domain correlation weight is 1, it is determined whether the number of subbands included in the virtual resource pool is an even number.
- the method further includes:
- determining the PRB corresponding to the sub-band and the VRB of the slot and the sub-band and the interval The frequency hopping distance between the PRBs corresponding to the VRBs of the time slots is 1.
- determining the PRB corresponding to the sub-band and the VRB of the slot and the sub-band and the interval The frequency hopping distance between the PRBs corresponding to the VRBs of the time slots is 1.
- the cycle period of the VRB corresponding to the PRB in the mapped physical resource pool is a virtual resource pool.
- the mapping scheme of the VRB to the PRB is determined according to the time domain correlation weight, the frequency domain correlation weight, and the number of subbands included in the virtual resource pool.
- the time-frequency weighted distance between the PRBs corresponding to the VRBs located in the same subband and different slots is determined to be 1/2*n.
- the mapping scheme of the VRB to the PRB cannot be obtained, the current time-frequency weighted distance is reduced by m, and the updated time-frequency weighted distance is obtained.
- Execution performs an exhaustive manner to determine whether to obtain a mapping scheme from VRB to PRB until a mapping scheme of VRB to PRB is obtained.
- m is the minimum weight among the time domain correlation weights and the frequency domain correlation weights.
- the method further includes:
- determining a time-frequency weighted distance between PRBs corresponding to VRBs located in the same sub-band and different time slots is Through an exhaustive manner, it is determined whether to obtain a mapping scheme of VRB to PRB.
- the mapping scheme of the VRB to the PRB cannot be obtained, the current time-frequency weighted distance is reduced by m, and the updated time-frequency weighted distance is obtained.
- Execution performs an exhaustive manner to determine whether to obtain a mapping scheme from VRB to PRB until a mapping scheme of VRB to PRB is obtained.
- the number of times each signal is transmitted is the same or differs once.
- a second aspect provides a computer storage medium, wherein the computer storage medium can store a program that, when executed, includes some or all of the steps of the first aspect.
- a third aspect provides a signal transmission apparatus, which may include a subband determination unit, a weight acquisition unit, a mapping scheme determination unit, a mapping unit, and a signal transmission unit, and the apparatus may be used to implement a part in combination with the first aspect or All steps.
- a fourth aspect provides a terminal device, including a processor, an output device, and a memory, wherein the memory stores a set of program codes, and the processor and the output device call the program code stored in the memory to perform the following operations:
- the processor determines a sub-band included in the virtual resource pool, and a sub-band and a time slot included in the physical resource pool, where the physical resource pool includes at least two sub-bands and at least two time slots, and the physical resource pool includes a sub-band greater than or Equal to the subband included in the virtual resource pool.
- the processor acquires time domain correlation weights and frequency domain correlation weights.
- the processor determines a mapping scheme of the VRB to the PRB according to the time domain correlation weight, the frequency domain correlation weight, and the number of subbands included in the virtual resource pool.
- the processor maps the VRBs in the virtual resource pool to the PRBs of the physical resource pool according to the mapping scheme of the VRB to the PRB.
- the output device transmits the signal using the mapped PRB.
- the processor determines a mapping scheme of the VRB to the PRB according to the time domain correlation weight, the frequency domain correlation weight, and the number of the subbands included in the virtual resource pool, and specifically includes:
- the domain correlation weight is 1, and the frequency domain correlation weight is 0, it is determined whether the number of subbands included in the virtual resource pool is an even number.
- the number of subbands included in the virtual resource pool is an even number, determining a frequency hopping distance between a PRB corresponding to the subband and the VRB of the slot and a PRB corresponding to the VRB of the subband and the previous slot of the slot Equal to 1/2*n, where n is the number of subbands included in the virtual resource pool. Determining the PRB corresponding to the sub-band and the VRB of the slot and the sub-band and the slot The hopping distance between the PRBs corresponding to the VRBs of the latter slot is equal to 1/2*n-1.
- the method further includes:
- determining a frequency hopping distance between a PRB corresponding to the subband and the VRB of the slot and a PRB corresponding to the VRB of the subband and the previous slot of the slot Determining a frequency hopping distance between a PRB corresponding to a sub-band and a VRB corresponding to a time slot and a PRB corresponding to a VRB located in a sub-band and a subsequent time slot of the time slot is equal to
- the processor determines the VRB to the PRB according to the time domain correlation weight, the frequency domain correlation weight, and the number of subbands included in the virtual resource pool.
- the mapping scheme specifically includes:
- the domain correlation weight is 0 and the frequency domain correlation weight is 1, it is determined whether the number of subbands included in the virtual resource pool is an even number.
- the number of sub-bands included in the virtual resource pool is an even number, determining a hop between the PRB corresponding to the sub-band and the VRB of the slot and the PRB corresponding to the VRB located in the sub-band and separated by 1/2*n slots
- the frequency distance is 1, and n is the number of sub-bands included in the virtual resource pool. It is determined that the frequency hopping distance between the PRB corresponding to the VRB located in the subband and the time slot and the PRB corresponding to the VRB located in the subband and spaced by 1/2*n-1 slots is 1.
- the method further includes:
- determining the PRB corresponding to the sub-band and the VRB of the slot and the sub-band and the interval The frequency hopping distance between the PRBs corresponding to the VRBs of the time slots is 1. Determining the PRB corresponding to the sub-band and the VRB of the slot and the sub-band and spacing The frequency hopping distance between the PRBs corresponding to the VRBs of the time slots is 1.
- the cycle period of the VRB corresponding to the PRB in the mapped physical resource pool is the virtual The number of subbands included in the resource pool.
- the processor determines the VRB to the PRB according to the time domain correlation weight, the frequency domain correlation weight, and the number of subbands included in the virtual resource pool.
- the mapping scheme specifically includes:
- the virtual resource pool is included. Whether the number of sub-bands is even. When the number of sub-bands included in the virtual resource pool is an even number, the time-frequency weighted distance between the PRBs corresponding to the VRBs located in the same sub-band and different time slots is 1/2*n, where n is included in the virtual resource pool. The number of subbands.
- the mapping scheme of the VRB to the PRB cannot be obtained, the current time-frequency weighted distance is reduced by m, and the updated time-frequency weighted distance is obtained, where m is the minimum weight among the time domain correlation weight and the frequency domain correlation weight. Execution performs an exhaustive manner to determine whether to obtain a mapping scheme from VRB to PRB until a mapping scheme of VRB to PRB is obtained.
- the method further includes:
- determining a time-frequency weighted distance between PRBs corresponding to VRBs located in the same sub-band and different time slots is Through an exhaustive manner, it is determined whether to obtain a mapping scheme of VRB to PRB.
- the mapping scheme of the VRB to the PRB cannot be obtained, the current time-frequency weighted distance is reduced by m, and the updated time-frequency weighted distance is obtained.
- Execution performs an exhaustive manner to determine whether to obtain a mapping scheme from VRB to PRB until a mapping scheme of VRB to PRB is obtained.
- the number of times each signal is transmitted is the same or differs once.
- FIG. 1 is a schematic flow chart of a signal transmission method provided in an embodiment of the present invention.
- 2A is a schematic diagram of an interface of a VRB to PRB mapping scheme provided in an embodiment of the present invention
- 2B is a schematic diagram of an interface of a VRB to PRB mapping scheme provided in an embodiment of the present invention
- FIG. 2C is a schematic diagram of a VRB to PRB mapping scheme provided in an embodiment of the present invention.
- 2D is a schematic diagram of an interface of a VRB to PRB mapping solution provided in an embodiment of the present invention
- 2E is a schematic diagram of an interface of a VRB to PRB mapping solution provided in an embodiment of the present invention.
- 2F is a schematic diagram of an interface of a VRB to PRB mapping scheme provided in an embodiment of the present invention.
- 2G is a schematic diagram of an interface of a VRB to PRB mapping scheme provided in an embodiment of the present invention.
- FIG. 3 is a schematic structural diagram of a signal transmission apparatus according to an embodiment of the present invention.
- FIG. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
- FIG. 1 is a schematic flowchart of a signal transmission method according to an embodiment of the present invention.
- the signal transmission method in the embodiment of the present invention may include at least:
- S101 Determine a sub-band included in the virtual resource pool, and a sub-band and a time slot included in the physical resource pool.
- the terminal device can determine the sub-bands included in the virtual resource pool, and the sub-bands and time slots included in the physical resource pool.
- the terminal device may be a base station or a user equipment (User Equipment, UE) or the like.
- the physical resource pool includes at least two sub-bands and at least two time slots, and the physical resource pool includes a sub-band that is greater than or equal to a sub-band included in the virtual resource pool.
- the sub-band can be used to indicate the frequency of the virtual resource pool or the physical resource pool.
- the time slot can be used to indicate the time slot included in the virtual resource pool or the physical resource pool, and the interface of the VRB mapped to the PRB shown in FIG. 2A is schematic.
- the sub-bands included in the virtual resource pool are 0 to 7.
- the slots included in the virtual resource pool are slots 1 to slot 4.
- the sub-bands included in the physical resource pool are 0 to 7.
- the slots included in the physical resource pool It is slot1 ⁇ slot4.
- the terminal device can acquire the time domain correlation weight and the frequency domain correlation weight.
- the time domain correlation weight when the terminal device only considers the correlation of the channel in the time domain, the time domain correlation weight may be set to 1, and the frequency domain correlation weight is set to 0.
- the time domain correlation weight can be set to 0, and the frequency domain correlation weight is set to 1.
- the terminal device may acquire the preset time domain correlation weight and the frequency domain correlation weight, where the preset time domain correlation weight and the frequency domain correlation are preset. The weights are not zero.
- the terminal device may determine a mapping scheme of the VRB to the PRB according to the time domain correlation weight, the frequency domain correlation weight, and the number of subbands included in the virtual resource pool.
- the terminal device may determine the VRB to the PRB according to the time domain correlation weight, the frequency domain correlation weight, and the number of the subbands included in the virtual resource pool, regardless of whether the subbands included in the physical resource pool are consecutive or discontinuous. Mapping scheme.
- the terminal device can determine whether the number of subbands included in the virtual resource pool is an even number.
- the number of subbands included in the virtual resource pool is an even number, determining a frequency hopping distance between a PRB corresponding to the subband and the VRB of the slot and a PRB corresponding to the VRB of the subband and the previous slot of the slot Equal to 1/2*n, where n is the number of subbands included in the virtual resource pool.
- the frequency hopping distance between the PRB corresponding to the VRB located in the subband and the time slot and the PRB corresponding to the VRB located in the subband and the subsequent slot of the slot is determined to be equal to 1/2*n-1.
- the virtual resource pool includes 12 sub-bands, which are respectively 0 to 11.
- the physical resource pool contains 12 subbands and 20 slots.
- the terminal device may sequentially arrange 0 1 2 3 4 5 6 7 8 9 10 11 in the first time slot of the physical resource pool.
- the terminal device may determine that the hopping distance between the PRB corresponding to the VRB of the second slot and the PRB corresponding to the VRB of the first slot and the sub-band and the PRB corresponding to the VRB of the first slot is equal to 6, that is, the PRB of the first slot is The six sub-bands are cyclically moved from right to left, and the PRBs in the second time slot in the mapped physical resource pool are: 6 7 8 9 10 11 0 1 2 3 4 5 .
- the terminal device may also determine a hop between the PRB corresponding to the VRB located in the sub-band and the third slot and the PRB corresponding to the VRB of the second slot and the second slot.
- the frequency distance is equal to 5, that is, the PRB located in the second time slot is cyclically moved from right to left by 5 sub-bands, and the PRBs in the mapped physical resource pool located in the third time slot are: 11 0 1 2 3 4 5 6 7 8 9 10.
- the terminal device may determine that the hopping distance between the PRB corresponding to the VRB located in the sub-band and the fourth slot and the PRB corresponding to the VRB located in the sub-band and the third slot is equal to 6, located in the sub-band and fifth.
- the hopping distance between the PRB corresponding to the VRB of the slot and the PRB corresponding to the VRB of the fourth slot and the fourth slot is equal to 5.
- the mapping scheme of the VRB to the PRB obtained by the terminal device can be as shown in FIG. 2B.
- the PRB mobility mode includes, but is not limited to, the foregoing manner, for example, cyclically moving the PRB located in the first time slot from left to right to obtain a PRB located in the second time slot, and looping the PRB located in the second time slot from left to right.
- the mobile gets the PRB located in the third time slot.
- the terminal device may determine that the PRB corresponding to the sub-band and the VRB of the slot is the PRB corresponding to the VRB of the sub-band and the previous slot of the slot.
- the hopping distance between them is equal to 1/2*n-1. Determining a frequency hopping distance between a PRB corresponding to a sub-band and a VRB corresponding to a time slot and a PRB corresponding to a VRB located in a sub-band and a subsequent time slot of the time slot is equal to 1/2*n, which is not specifically affected by the embodiment of the present invention. limit.
- the terminal device can determine whether the number of subbands included in the virtual resource pool is an even number. When the number of subbands included in the virtual resource pool is an odd number, determining a frequency hopping distance between a PRB corresponding to the subband and the VRB of the slot and a PRB corresponding to the VRB of the subband and the previous slot of the slot equal Determining a frequency hopping distance between a PRB corresponding to a sub-band and a VRB corresponding to a time slot and a PRB corresponding to a VRB located in a sub-band and a subsequent time slot of the time slot is equal to among them, Refers to rounding up 1/2*n. Refers to rounding down 1/2*n.
- the virtual resource pool includes five sub-bands, which are 0 to 4.
- the physical resource pool contains 12 subbands and 20 slots.
- the terminal device may cyclically arrange each resource block in the first time slot in the virtual resource pool to the first time slot of the physical resource pool, that is, the PRBs in the first time slot in the physical resource pool are: 0 1 2 3 4 0 1 2 3 4 0 1.
- the terminal device may determine the PRB corresponding to the VRB located in the sub-band and the second slot
- the hopping distance between the PRBs corresponding to the VRBs of the first time slot is equal to 3, that is, the PRBs in the first time slot are cyclically moved from left to right by three sub-bands, and the mapped physical resource pool is located.
- the PRB of the second time slot is: 2 3 4 0 1 2 3 4 0 1 2 3.
- the terminal device may also determine that the hopping distance between the PRB corresponding to the VRB located in the sub-band and the third slot and the PRB corresponding to the VRB of the second slot and the second slot is equal to 2, that is, the PRB located in the second slot
- the two sub-bands are cyclically moved from right to left, and the PRBs in the third time slot in the mapped physical resource pool are: 4 0 1 2 3 4 0 1 2 3 4 0.
- the terminal device may determine that the hopping distance between the PRB corresponding to the VRB located in the sub-band and the fourth slot and the PRB corresponding to the VRB located in the sub-band and the third slot is equal to 3, located in the sub-band and fifth.
- the frequency hopping distance between the PRB corresponding to the VRB of the slot and the PRB corresponding to the VRB of the fourth slot and the fourth slot is equal to 2.
- the mapping scheme of the VRB to the PRB obtained by the terminal device can be as shown in FIG. 2C.
- the PRB mobility mode includes, but is not limited to, the foregoing manner, for example, cyclically moving the PRB located in the first time slot from right to left to obtain a PRB located in the second time slot, and looping the PRB located in the second time slot from left to right.
- the mobile gets the PRB located in the third time slot.
- the terminal device may determine the PRB corresponding to the subband and the VRB corresponding to the slot and the PRB corresponding to the VRB of the subband and the previous slot of the slot.
- the frequency hopping distance is equal to Determining a frequency hopping distance between a PRB corresponding to a sub-band and a VRB corresponding to a time slot and a PRB corresponding to a VRB located in a sub-band and a subsequent time slot of the time slot is equal to It is not specifically limited by the embodiments of the present invention.
- the terminal device can determine whether the number of subbands included in the virtual resource pool is an even number. When the number of sub-bands included in the virtual resource pool is an even number, determining a hop between the PRB corresponding to the sub-band and the VRB of the slot and the PRB corresponding to the VRB located in the sub-band and separated by 1/2*n slots The frequency distance is 1, and n is the number of sub-bands included in the virtual resource pool. It is determined that the frequency hopping distance between the PRB corresponding to the VRB located in the subband and the time slot and the PRB corresponding to the VRB located in the subband and spaced by 1/2*n-1 slots is 1.
- a virtual resource pool It contains 12 sub-bands, which are 0 to 11.
- the physical resource pool contains 12 subbands and 20 slots.
- the terminal device may sequentially arrange 0 1 2 3 4 5 6 7 8 9 10 11 in the first time slot of the physical resource pool.
- the terminal device may determine that the PRB corresponding to the VRB0 of the first time slot and the PRB corresponding to the VRB0 of the second sub-band are separated by six time slots in the physical resource pool, that is, the PRB located in the first time slot.
- the PRBs in the seventh slot in the mapped physical resource pool are: 11 0 1 2 3 4 5 6 7 8 9 10 in order.
- the terminal device may further determine that the PRB corresponding to the VRB0 of the seventh time slot and the PRB corresponding to the VRB0 of the third sub-band are located in the second sub-band, and the PRB located in the seventh time slot is from left to right.
- the right cycle moves one sub-band, and the PRBs in the second slot in the mapped physical resource pool are: 10 11 0 1 2 3 4 5 6 7 8 9 .
- the terminal device may determine that the PRB corresponding to the VRB of the second time slot is located in the third sub-band and the PRB corresponding to the VRB of the fourth sub-band is separated by 6 time slots, and the physical resource pool is located at the eighth time.
- the PRB corresponding to the VRB located in the fourth sub-band and the eighth time slot is separated from the PRB corresponding to the VRB located in the fifth sub-band by 5 time slots, and the PRB located in the third time slot in the physical resource pool is obtained.
- the mapping scheme of the VRB to the PRB obtained by the terminal device can be as shown in FIG. 2D.
- the terminal device can determine whether the number of subbands included in the virtual resource pool is an even number. When the number of sub-bands included in the virtual resource pool is an odd number, determining the PRB corresponding to the sub-band and the VRB of the slot and the sub-band and the interval The frequency hopping distance between the PRBs corresponding to the VRBs of the time slots is 1. Determining the PRB corresponding to the sub-band and the VRB of the slot and the sub-band and spacing The frequency hopping distance between the PRBs corresponding to the VRBs of the time slots is 1.
- the virtual resource pool includes five sub-bands, which are 0 to 4.
- the physical resource pool contains 12 subbands and 20 slots.
- the terminal device may sequentially arrange 0 1 2 3 4 0 1 2 3 4 0 1 in the first time slot of the physical resource pool.
- the terminal device may determine that the PRB corresponding to the VRB0 of the first time slot in the physical resource pool is separated from the PRB corresponding to the VRB0 of the second sub-band by 3 time slots, that is, the PRB located in the fourth time slot. Moving one sub-band from left to right, the PRBs in the fourth slot in the mapped physical resource pool are: 4 0 1 2 3 4 0 1 2 3 4 0.
- the terminal device may also determine that the PRB corresponding to VRB0 located in the second sub-band and the fourth slot is the PRB corresponding to VRB0 located in the third sub-band
- the PRBs in the second time slot are cyclically shifted from left to right by one sub-band, and the PRBs in the second time slot in the mapped physical resource pool are: 3 4 0 1 2 3 4 0 1 2 3 4.
- the terminal device may determine that the PRB corresponding to the VRB of the second time slot is located in the third sub-band and the PRB corresponding to the VRB of the fourth sub-band is separated by three time slots, and the physical resource pool is located at the fifth time.
- the PRB of the gap is performed by the third sub-band.
- the PRB corresponding to the VRB of the fifth time slot and the VRB corresponding to the VRB of the sixth sub-band is separated by two time slots, and the PRB of the physical resource pool located in the third time slot is obtained.
- the mapping scheme of the VRB to the PRB obtained by the terminal device can be as shown in FIG. 2E.
- the terminal device may determine whether the number of subbands included in the virtual resource pool is an even number.
- the time-frequency weighted distance between the PRBs corresponding to the VRBs located in the same subband and different slots is determined to be 1/2*n.
- the current time-frequency weighted distance is reduced by m, and the updated time-frequency weighted distance is obtained, where m is the minimum weight among the time domain correlation weight and the frequency domain correlation weight.
- Execution performs an exhaustive manner to determine whether to obtain a mapping scheme from VRB to PRB until a mapping scheme of VRB to PRB is obtained.
- the virtual resource pool includes 12 sub-bands, which are respectively 0 to 11.
- the physical resource pool contains 12 subbands and 20 slots.
- the time domain correlation weight and the frequency domain correlation weight acquired by the terminal device are both 1.
- the terminal device may sequentially arrange 0 1 2 3 4 5 6 7 8 9 10 11 in the first time slot of the physical resource pool.
- the terminal device determines that the time-frequency weighted distance between the PRBs corresponding to the VRBs in the same sub-band and different time slots is 6, and the second time slots of the physical resource pool may be sequentially arranged as: 7 8 9 10 11 0 1 2 3 4 5 6.
- the time-frequency weighted distance between the PRBs satisfies the above condition, and the time-frequency weighted distance between the PRB corresponding to the VRB0 of the first slot and the PRB corresponding to the VRB0 of the third slot does not satisfy the above condition.
- the third time slot of the physical resource pool is sequentially arranged as: 2 3 4 5 6 7 8 9 10 11 0 1, VRB0 of the first time slot
- the terminal device cannot determine the mapping scheme of the VRB to the PRB by the above arrangement method.
- the time-frequency weighted distance between the PRBs satisfies the above condition, and the time-frequency weighted distance between the PRB corresponding to the VRB0 of the first slot and the PRB corresponding to the VRB0 of the third slot does not satisfy the above condition.
- the third time slot of the physical resource pool is sequentially arranged as: 1 2 3 4 5 6 7 8 9 10 11 0, the time between the PRB corresponding to the VRB0 of the first time slot and the PRB corresponding to the VRB0 of the third time slot.
- the terminal device cannot determine the mapping scheme of the VRB to the PRB by the above arrangement method.
- the PRB corresponding to VRB0 in the third slot of the physical resource pool is located in the first subband, the second subband, or the third subband, the PRB corresponding to the VRB0 of the second slot and the PRB corresponding to the VRB0 of the third slot.
- the time-frequency weighted distance between the first time slot and the PRB corresponding to the VRB0 of the third time slot does not satisfy the above condition.
- the third time slot of the physical resource pool is sequentially arranged as: 10 11 0 1 2 3 4 5 6 7 8 9, the time between the PRB corresponding to the VRB0 of the first time slot and the PRB corresponding to the VRB0 of the third time slot.
- the terminal device cannot determine the mapping scheme of the VRB to the PRB by the above arrangement method.
- the second time slot of the physical resource pool may be sequentially arranged as: 8 9 10 11 0 1 2 3 4 5 6 7,7 8 9 10 11 0 1 2 3 4 5 6,6 7 8 9 10 11 0 1 2 3 4 5,5 6 7 8 9 10 11 0 1 2 3 4, or 4 5 6 7 8 9 10 11 0 1 2 3, the terminal device cannot determine the mapping scheme of VRB to PRB by the above arrangement method.
- the mapping scheme of the VRB to the PRB determined by the terminal device through exhaustiveness can be as shown in FIG. 2F.
- the terminal device may determine whether the number of subbands included in the virtual resource pool is an even number. When the number of sub-bands included in the virtual resource pool is an odd number, determining a time-frequency weighted distance between PRBs corresponding to VRBs located in the same sub-band and different time slots is Through an exhaustive manner, it is determined whether to obtain a mapping scheme of VRB to PRB. When the mapping scheme of the VRB to the PRB cannot be obtained, the current time-frequency weighted distance is reduced by m, and the updated time-frequency weighted distance is obtained. Execution performs an exhaustive manner to determine whether to obtain a mapping scheme from VRB to PRB until a mapping scheme of VRB to PRB is obtained.
- the virtual resource pool includes 9 sub-bands, which are 0-8 respectively.
- the physical resource pool contains 24 subbands and 20 slots.
- the time domain correlation weight and the frequency domain correlation weight acquired by the terminal device are both 1.
- the terminal device may sequentially arrange 0 1 2 3 4 5 6 7 8 0 1 2 3 4 5 6 7 8 0 1 2 3 4 5 in the first time slot of the physical resource pool.
- the terminal device determines that the time-frequency weighted distance between the PRBs corresponding to the VRBs in the same sub-band and different time slots is 5, and the second time slots of the physical resource pool may be sequentially arranged as: 5 6 7 8 0 1 2 3 4 5 6 7 8 0 1 2 3 4 5 6 7 8 0 1.
- the VRB0 of the second slot corresponds to The time-frequency weighted distance between the PRB corresponding to the PRB0 corresponding to the VRB0 of the third time slot satisfies the above condition, and the time-frequency weighted distance between the PRB corresponding to the VRB0 of the first time slot and the PRB corresponding to the VRB0 of the third time slot The above conditions are not met.
- the third time slot of the physical resource pool is sequentially arranged as: 1 2 3 4 5 6 7 8 0 1 2 3 4 5 6 7 8 0 1 2 3 4 5 6, the PRB corresponding to the VRB0 of the first time slot and the first
- the terminal device cannot determine the mapping scheme of the VRB to the PRB by the above arrangement method.
- the PRB corresponding to VRB0 in the third slot of the physical resource pool is located in the tenth sub-band, the eleventh sub-band, and the tenth The nine-subband or the twentieth sub-band, the time-frequency weighted distance between the PRB corresponding to the VRB0 of the second slot and the PRB corresponding to the VRB0 of the third slot satisfies the above condition, and the PRB corresponding to the VRB0 of the first slot The time-frequency weighted distance between the PRBs corresponding to VRB0 of the third slot does not satisfy the above condition.
- the third time slot of the physical resource pool is sequentially arranged as: 0 1 2 3 4 5 6 7 8 0 1 2 3 4 5 6 7 8 0 1 2 3 4 5, the PRB and the corresponding VRB0 of the second time slot
- the terminal device cannot determine the mapping scheme of the VRB to the physical resource block by using the above arrangement method.
- the mapping scheme of the VRB to the PRB determined by the terminal device through exhaustiveness can be as shown in FIG. 2G.
- S104 Map a virtual resource block in the virtual resource pool to a physical resource block in the physical resource pool according to a mapping scheme of the virtual resource block to the physical resource block.
- the terminal device can map the VRB in the virtual resource pool to the PRB of the physical resource pool according to the obtained mapping scheme of the VRB to the PRB.
- the VRBs in each slot of the virtual resource pool are sequentially arranged as: 0 1 2 3 4 5 6 7 , the first of the mapped physical resource pools
- the VRBs in the time slots are arranged in order: 2 3 4 5 6 7 0 1.
- the VRBs in the second time slot of the mapped physical resource pool are sequentially arranged as: 6 7 0 1 2 3 4 5, the mapped physical resources
- the VRBs in the third time slot of the pool are sequentially arranged as: 1 2 3 4 5 6 7 0, and the VRBs in the fourth time slot of the mapped physical resource pool are sequentially arranged as: 5 6 7 0 1 2 3 4 .
- the cycle period of the VRB corresponding to the PRB in the mapped physical resource pool is the number of subbands included in the virtual resource pool.
- the cycle period of the VRB corresponding to the PRB in the mapped physical resource pool is 12, that is, the arrangement of the VRBs corresponding to the PRBs in the first time slot and The arrangement of the VRBs corresponding to the PRBs in the thirteenth time slot is the same.
- the arrangement of the VRBs corresponding to the PRBs in the second time slot is the same as the arrangement of the VRBs corresponding to the PRBs in the fourteenth time slots, and so on.
- the cycle period of the VRB corresponding to the PRB in the mapped physical resource pool is 5, that is, the arrangement of the VRBs corresponding to the PRBs in the first slot and
- the arrangement of the VRBs corresponding to the PRBs in the sixth time slot is the same
- the arrangement of the VRBs corresponding to the PRBs in the two slots is the same as the arrangement of the VRBs corresponding to the PRBs in the seventh slot, and so on.
- the terminal device can transmit signals using the mapped PRB.
- the VRB occupied by the signal 2a to be transmitted is located in the third sub-band of the first slot, and the VRB in the first slot of the mapped physical resource pool.
- the terminal device can use the PRB transmission signal 2a in the first sub-band of the first time slot in the physical resource pool; the VRB occupied by the signal 2b to be transmitted is located in the second time slot.
- the VRBs in the second slot of the mapped physical resource pool are sequentially arranged as: 6 7 0 1 2 3 4 5, and the terminal device can use the fifth sub-band of the second slot in the physical resource pool.
- the PRB transmission signal 2b; the VRB occupied by the signal 4a to be transmitted is located in the fifth sub-band of the first time slot, and the VRBs in the first time slot of the mapped physical resource pool are sequentially arranged as: 2 3 4 5 6 7 0 1
- the terminal device may use the PRB transmission signal 4a located in the third sub-band of the first slot in the physical resource pool.
- the VRB in the virtual resource pool is mapped to the PRB of the physical resource pool, and the signal is sent by using the mapped PRB, and the number of times of sending each signal is the same or different.
- the interval between PRBs corresponding to VRBs located in different time slots and in the same sub-band is large, and if a sub-band exhibits deep fading, the corrupted signal For one.
- one subframe is used as a cyclic period, that is, the arrangement of the VRBs corresponding to the PRBs in the first slot is the same as the arrangement of the VRBs corresponding to the PRBs in the third slot.
- the arrangement of the VRBs corresponding to the PRBs in the slots is the same as the arrangement of the VRBs corresponding to the PRBs in the fourth slot. If a sub-band exhibits deep fading, the corrupted signals are two. That is to say, if deep fading occurs, the embodiment of the present invention can reduce the number of corrupted signals and improve the effectiveness of signal transmission.
- determining a sub-band included in a virtual resource pool, and a sub-band and a time slot included in the physical resource pool acquiring time domain correlation weights and frequency domain correlation weights, according to the time domain
- the correlation weight, the frequency domain correlation weight, and the number of the sub-bands included in the virtual resource pool determine the mapping scheme of the VRB to the PRB, and map the VRBs in the virtual resource pool to the physical resource pool according to the mapping scheme of the VRB to the PRB.
- the signal is transmitted using the mapped PRB, which improves the effectiveness of signal transmission.
- FIG. 3 is a schematic structural diagram of a signal transmission apparatus according to an embodiment of the present invention.
- the signal transmission apparatus provided by the embodiment of the present invention can be used to implement the signal transmission method embodiment introduced by the present invention in conjunction with FIG. Part or all of the process.
- the signal transmission apparatus in the embodiment of the present invention may include at least a sub-band determining unit 301, a weight acquiring unit 302, a mapping scheme determining unit 303, a mapping unit 304, and a signal sending unit 305, where:
- the sub-band determining unit 301 is configured to determine a sub-band included in the virtual resource pool, and a sub-band and a time slot included in the physical resource pool, where the physical resource pool includes at least two sub-bands and at least two time slots, and the physical resource pool The included subband is greater than or equal to the subband included in the virtual resource pool.
- the weight obtaining unit 302 is configured to acquire time domain correlation weights and frequency domain correlation weights.
- the mapping scheme determining unit 303 is configured to determine a mapping scheme of the VRB to the PRB according to the time domain correlation weight, the frequency domain correlation weight, and the number of subbands included in the virtual resource pool.
- the mapping unit 304 is configured to map the VRBs in the virtual resource pool to the PRBs of the physical resource pool according to the mapping scheme of the VRB to the PRB.
- the signal sending unit 305 is configured to send a signal by using the mapped PRB.
- mapping scheme determining unit 303 is specifically configured to:
- the domain correlation weight is 1, and the frequency domain correlation weight is 0, it is determined whether the number of subbands included in the virtual resource pool is an even number.
- determining a frequency hopping distance between a PRB corresponding to the subband and the VRB of the slot and a PRB corresponding to the VRB of the subband and the previous slot of the slot Equal to 1/2*n, where n is the number of subbands included in the virtual resource pool.
- the frequency hopping distance between the PRB corresponding to the VRB located in the subband and the time slot and the PRB corresponding to the VRB located in the subband and the subsequent slot of the slot is determined to be equal to 1/2*n-1.
- mapping scheme determining unit 303 determines whether the number of sub-bands included in the virtual resource pool is an even number
- the mapping scheme determining unit 303 is further configured to:
- Determining a frequency hopping distance between a PRB corresponding to a sub-band and a VRB corresponding to a time slot and a PRB corresponding to a VRB located in a sub-band and a subsequent time slot of the time slot is equal to
- mapping scheme determining unit 303 is specifically configured to:
- the domain correlation weight is 0 and the frequency domain correlation weight is 1, it is determined whether the number of subbands included in the virtual resource pool is an even number.
- determining a hop between the PRB corresponding to the sub-band and the VRB of the slot and the PRB corresponding to the VRB located in the sub-band and separated by 1/2*n slots The frequency distance is 1, and n is the number of sub-bands included in the virtual resource pool.
- mapping scheme determining unit 303 determines whether the number of sub-bands included in the virtual resource pool is an even number
- the mapping scheme determining unit 303 is further configured to:
- the frequency hopping distance between the PRBs corresponding to the VRBs of the time slots is 1.
- the cycle period of the VRB corresponding to the PRB in the mapped physical resource pool is the number of sub-bands included in the virtual resource pool.
- mapping scheme determining unit 303 is specifically configured to:
- the time-frequency weighted distance between the PRBs corresponding to the VRBs located in the same sub-band and different time slots is 1/2*n, where n is included in the virtual resource pool.
- the current time-frequency weighted distance is reduced by m, and the updated time-frequency weighted distance is obtained, where m is the minimum weight among the time domain correlation weight and the frequency domain correlation weight.
- Execution performs an exhaustive manner to determine whether to obtain a mapping scheme from VRB to PRB until a mapping scheme of VRB to PRB is obtained.
- mapping scheme determining unit 303 determines whether the number of sub-bands included in the virtual resource pool is an even number
- the mapping scheme determining unit 303 is further configured to:
- the mapping scheme of the VRB to the PRB cannot be obtained, the current time-frequency weighted distance is reduced by m, and the updated time-frequency weighted distance is obtained.
- Execution performs an exhaustive manner to determine whether to obtain a mapping scheme from VRB to PRB until a mapping scheme of VRB to PRB is obtained.
- the individual signals are transmitted the same number of times or differed once.
- the subband determining unit 301 determines subbands included in the virtual resource pool, and subbands and slots included in the physical resource pool, and the weight obtaining unit 302 acquires time domain correlation weights and frequencies.
- the mapping scheme determining unit 303 determines a mapping scheme of the VRB to the PRB according to the time domain correlation weight, the frequency domain correlation weight, and the number of subbands included in the virtual resource pool, and the mapping unit 304 according to the VRB to the PRB
- the mapping scheme maps the VRBs in the virtual resource pool to the PRBs of the physical resource pool, and the signal sending unit 305 uses the mapped PRBs to send signals, which can improve the validity of the signal transmission.
- FIG. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
- the terminal device may include a processor 401, a memory 402, and an output device 403.
- the processor 401 is coupled to the memory 402 and to the output device 403, for example, the processor 401 can be coupled to the memory 402 and the output device 403 via a bus.
- the processor 401 may be a central processing unit (CPU), a network processor (NP), or the like.
- the memory 402 can be specifically used to store a VRB to PRB mapping scheme and the like.
- the memory 402 may include a volatile memory such as a random-access memory (RAM); the memory may also include a non-volatile memory such as a read-only memory (read- Only memory, ROM), flash memory, hard disk drive (HDD) or solid-state drive (SSD); A combination of memories of the above kind may be included.
- RAM random-access memory
- ROM read-only memory
- HDD hard disk drive
- SSD solid-state drive
- the output device 403 is configured to send a signal.
- the output device may include a network interface or a radio frequency transmitter or the like.
- the processor 401 and the output device 403 call the program stored in the memory 402, and can perform the following operations:
- the processor 401 determines a sub-band included in the virtual resource pool, and a sub-band and a time slot included in the physical resource pool, where the physical resource pool includes at least two sub-bands and at least two time slots, and the physical resource pool includes a sub-band greater than Or equal to the sub-band included in the virtual resource pool.
- the processor 401 acquires time domain correlation weights and frequency domain correlation weights.
- the processor 401 determines a mapping scheme of the VRB to the PRB according to the time domain correlation weight, the frequency domain correlation weight, and the number of subbands included in the virtual resource pool.
- the processor 401 maps the VRBs in the virtual resource pool to the PRBs of the physical resource pool according to the mapping scheme of the VRB to the PRB.
- the output device 403 transmits a signal using the mapped PRB.
- the processor 401 determines a mapping scheme of the VRB to the PRB according to the time domain correlation weight, the frequency domain correlation weight, and the number of the subbands included in the virtual resource pool, and specifically includes:
- the domain correlation weight is 1, and the frequency domain correlation weight is 0, it is determined whether the number of subbands included in the virtual resource pool is an even number.
- determining a frequency hopping distance between a PRB corresponding to the subband and the VRB of the slot and a PRB corresponding to the VRB of the subband and the previous slot of the slot Equal to 1/2*n, where n is the number of subbands included in the virtual resource pool.
- the frequency hopping distance between the PRB corresponding to the VRB located in the subband and the time slot and the PRB corresponding to the VRB located in the subband and the subsequent slot of the slot is determined to be equal to 1/2*n-1.
- the method further includes:
- Determining a frequency hopping distance between a PRB corresponding to a sub-band and a VRB corresponding to a time slot and a PRB corresponding to a VRB located in a sub-band and a subsequent time slot of the time slot is equal to
- the processor 401 determines a mapping scheme of the VRB to the PRB according to the time domain correlation weight, the frequency domain correlation weight, and the number of the subbands included in the virtual resource pool, and specifically includes:
- the domain correlation weight is 0 and the frequency domain correlation weight is 1, it is determined whether the number of subbands included in the virtual resource pool is an even number.
- determining a hop between the PRB corresponding to the sub-band and the VRB of the slot and the PRB corresponding to the VRB located in the sub-band and separated by 1/2*n slots The frequency distance is 1, and n is the number of sub-bands included in the virtual resource pool.
- the method further includes:
- the frequency hopping distance between the PRBs corresponding to the VRBs of the time slots is 1.
- the cycle period of the VRB corresponding to the PRB in the mapped physical resource pool is the number of sub-bands included in the virtual resource pool.
- the processor 401 determines a mapping scheme of the VRB to the PRB according to the time domain correlation weight, the frequency domain correlation weight, and the number of the subbands included in the virtual resource pool, and specifically includes:
- the time-frequency weighted distance between the PRBs corresponding to the VRBs located in the same sub-band and different time slots is 1/2*n, where n is included in the virtual resource pool.
- the current time-frequency weighted distance is reduced by m, and the updated time-frequency weighted distance is obtained, where m is the minimum weight among the time domain correlation weight and the frequency domain correlation weight.
- Execution performs an exhaustive manner to determine whether to obtain a mapping scheme from VRB to PRB until a mapping scheme of VRB to PRB is obtained.
- the method further includes:
- the mapping scheme of the VRB to the PRB cannot be obtained, the current time-frequency weighted distance is reduced by m, and the updated time-frequency weighted distance is obtained.
- Execution performs an exhaustive manner to determine whether to obtain a mapping scheme from VRB to PRB until a mapping scheme of VRB to PRB is obtained.
- the individual signals are transmitted the same number of times or differed once.
- the terminal device introduced in the embodiment of the present invention may be used to implement some or all of the processes in the embodiment of the signal transmission method introduced in conjunction with FIG. 1 of the present invention.
- first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
- features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
- the meaning of "a plurality” is at least two, such as two, three, etc., unless specifically defined otherwise.
- a "computer-readable medium” can be any apparatus that can include, store, communicate, propagate, or transport a program for use in an instruction execution system, apparatus, or device, or in conjunction with such an instruction execution system, apparatus, or device.
- computer readable media include the following: electrical connections (electronic devices) having one or more wires, portable computer disk cartridges (magnetic devices), random access memory, read only memory , erasable editable read-only memory, fiber optic devices, and portable optical disk read-only memory.
- the computer readable medium may even be a paper or other suitable medium on which the program can be printed, as it may be optically scanned, for example by paper or other medium, followed by editing, interpretation or, if appropriate, other suitable The method is processed to obtain the program electronically and then stored in computer memory.
- portions of the invention may be implemented in hardware, software, firmware or a combination thereof.
- multiple steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system.
- a suitable instruction execution system For example, if implemented in hardware, as in another embodiment, it can be implemented by any one or combination of the following techniques well known in the art: having logic gates for implementing logic functions on data signals. Discrete logic circuits, application specific integrated circuits with suitable combinational logic gates, programmable gate arrays, field programmable gate arrays, and the like.
- modules in the various embodiments of the present invention may be implemented in the form of hardware or in the form of software functional modules.
- An integrated module can also be stored in a computer readable storage medium if it is implemented as a software functional module and sold or used as a standalone product.
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Abstract
L'invention concerne un procédé et un appareil d'émission de signaux, et un dispositif terminal. Le procédé consiste : à déterminer une sous-bande de fréquence contenue dans un ensemble de ressources virtuelles, et des sous-bandes de fréquence et des intervalles de temps contenus dans un ensemble de ressources réelles, l'ensemble de ressources physiques contenant au moins deux sous-bandes de fréquence et au moins deux intervalles de temps, et la sous-bande de fréquence contenue dans l'ensemble de ressources physiques étant supérieure ou égale à la sous-bande de fréquence contenue dans l'ensemble de ressources virtuelles ; à acquérir un poids de corrélation de domaine de temps et un poids de corrélation de domaine de fréquence ; en fonction du poids de corrélation de domaine de temps, du poids de corrélation du domaine de fréquence, et du nombre de sous-bandes de fréquence contenues dans l'ensemble de ressources virtuelles, à déterminer un principe de mappage d'un VRB vers un PRB ; en fonction du principe de mappage du VRB vers le PRB, à mapper le VRB dans l'ensemble de ressources virtuelles vers le PRB dans l'ensemble de ressources physiques ; et à utiliser le PRB mappé pour envoyer un signal. L'adoption des modes de réalisation selon la présente invention permet d'améliorer l'efficacité d'émission de signaux.
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PCT/CN2016/074425 WO2017143529A1 (fr) | 2016-02-24 | 2016-02-24 | Procédé et appareil d'émission de signaux, et dispositif terminal |
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