CN112511278A - Data transmission method and device - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0055—Physical resource allocation for ACK/NACK
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
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- H04L1/00—Arrangements for detecting or preventing errors in the information received
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- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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Abstract
The embodiment of the application discloses a data transmission method, which is used for avoiding PUCCH from expanding time domain symbols, thereby improving the uplink throughput rate of the PUSCH. The method in the embodiment of the application comprises the following steps: in a scheduling period, after a base station schedules terminal equipment to be scheduled, the base station acquires a wave beam of the terminal to be scheduled, wave beam geographical position information and received reference signal power; then the base station generates a special-shaped wave beam according to the wave beam geographical position information and the receiving reference signal power; and finally, the base station receives the uplink acknowledgement/negative acknowledgement (ACK/NACK) fed back by the terminal equipment to be scheduled by utilizing the special-shaped wave beam.
Description
Technical Field
The present application relates to the field of communications, and in particular, to a data transmission method and apparatus.
Background
With the development of communication technology, in the next generation communication field (for example, a fifth generation mobile communication technology (5G)), a Hybrid Automatic Repeat reQuest (HARQ) mechanism is adopted when Media Access Control (MAC) layer data in a communication system is transmitted, that is, after a base station side transmits downlink data to a terminal device side each time, the terminal device side feeds back an Acknowledgement/Negative Acknowledgement (ACK/NACK) to the base station side, and the base station side determines whether the downlink data is successfully transmitted according to the ACK/NACK fed back by the terminal device side.
And in the 5G millimeter wave system, due to the high coverage difference of the frequency band, narrow beams are introduced for improving the coverage. In a narrow beam scene, for the same terminal device, the same narrow beam is adopted for both downlink data transmission and uplink ACK/NACK reception at the base station side, thereby ensuring equivalent uplink and downlink coverage.
However, the number of analog narrow beams that can be transmitted at each time (symbol or slot) in the millimeter wave system is limited, which means that when the number of downlink scheduled users is large, a Physical Uplink Control Channel (PUCCH) does not have enough beams pointing to a terminal device, and therefore the number of PUCCH symbols needs to be expanded in the time domain to support ACK/NACK feedback of more terminal devices. However, this is to occupy the available symbols of the Physical Uplink Shared Channel (PUSCH) in the Uplink timeslot, thereby causing waste of the available resources of the Uplink PUSCH and affecting the Uplink throughput.
Disclosure of Invention
The embodiment of the application provides a data transmission method, which is used for avoiding PUCCH from expanding time domain symbols, thereby improving the uplink throughput rate of PUSCH.
In a first aspect, an embodiment of the present application provides a data processing method, which specifically includes: in a scheduling period, after a base station schedules terminal equipment to be scheduled, the base station acquires beam geographic position information of the terminal to be scheduled and receives reference signal power; then the base station generates a special-shaped wave beam according to the wave beam geographical position information and the receiving reference signal power; and finally, the base station receives the uplink acknowledgement/negative acknowledgement (ACK/NACK) fed back by the terminal equipment to be scheduled by utilizing the special-shaped wave beam.
In this embodiment, in each scheduling period T (T is 1 scheduling period), the base station generates a special-shaped beam according to the received reference signal power of the beam geographical location information of each terminal, and receives uplink ACK/NACK fed back by the terminal device using the special-shaped beam. Since the special-shaped beam can point to multiple directions simultaneously for receiving information, the limitation of pointing or direction of 1 beam is not limited when multiple terminal devices send uplink ACK/NACK, so that ACK/NACK feedback can be carried out simultaneously in the same PUCCH Symbol, and the uplink throughput rate of the PUSCH is improved.
Optionally, the base station may further group, according to the received reference signal power or the interference-plus-noise ratio or the channel quality indicator, terminal devices belonging to the coverage area of the base station to generate a first group and a second group, where the terminal devices in the first group are terminal devices whose coverage limit values are greater than a first preset threshold value, and the terminal devices in the second group are terminal devices whose coverage limit values are smaller than the first preset threshold value, where the terminal device to be scheduled is included in the first group. It is understood that the first preset threshold is determined by the base station side, as long as the terminal devices belonging to the coverage area of the base station can be divided into terminal devices of a near base station and terminal devices of a far base station. In this embodiment, the coverage limitation value may be a received reference signal power of the synchronization signal block or a received reference signal power of the channel state information, or may be a reference such as a signal to interference plus noise ratio or a channel quality indicator. For example, setting the first preset threshold to-100 dBm, the power of the received reference signal of the synchronization signal block reported to the base station in the cell is greater than-100 dBm, and the base station is considered as a terminal device close to the base station and can be divided into the first group; if the power of the received reference signal of the synchronization signal block reported to the base station in the cell is less than-100 dBm, the base station considers the terminal equipment far away from the base station and can be divided into the second group.
In the embodiment, the terminal equipment is scheduled by adopting a grouping system, so that the success rate of data transmission can be effectively improved.
Optionally, based on the method, a specific method for the base station to generate the special-shaped beam according to the beam geographic position information and the received reference signal power may be as follows:
the base station generates a weighting coefficient of a narrow beam corresponding to the terminal equipment to be scheduled according to the received reference signal power; and then the base station generates a special-shaped beam according to the weighting coefficient and the corresponding narrow beam information of the terminal equipment to be scheduled. It can be understood that the beam geographic location information in this embodiment is used to indicate specific information of a beam used by the terminal device to be scheduled to upload data, such as direction information.
It can be understood that the method for the base station to obtain the weighting coefficients of the narrow beam is as follows: the base station determines the weighting coefficient of the narrow beam according to the received reference signal power of the terminal equipment to be scheduled and a first formula; wherein the first formula is:
wherein, the SnWeighting coefficients for narrow beams corresponding to the nth terminal device, the RSRPn-linearA linear value of the received reference signal power of the narrow beam corresponding to the nth terminal device, wherein
The RSRPnAnd receiving a reference signal power value of a narrow beam corresponding to the nth terminal device, where n is greater than or equal to 1 and less than or equal to m, and m is the number of terminal devices to be scheduled in each scheduling period.
And the base station may generate the special-shaped beam by using the weighting coefficient and a second formula, where the second formula is:
Beam＝∑S(n)*BeamVector(n)；
wherein the Beam is used for representing the special-shaped Beam, the s (n) represents a weighting coefficient of a narrow Beam corresponding to the nth terminal device, the beamvector (n) represents a weight vector of the narrow Beam corresponding to the nth terminal device, the n is greater than or equal to 1 and less than or equal to m, and the m is the number of terminal devices to be scheduled in each scheduling period.
Optionally, when the terminal device in the first group is a terminal device whose coverage limitation value is greater than a second preset threshold value, and the terminal device in the second group is a terminal device whose coverage limitation value is smaller than the second preset threshold value, the special-shaped beam is a wide beam, where the second preset threshold value is greater than the first preset threshold value. It can be understood that the closer to the base station, the smaller the path loss, and the wider beam with the smaller gain can be used to correctly receive the ACK/NACK feedback information.
Optionally, because the terminal devices in the second group are farther from the base station and the path loss is larger, the base station still uses the narrow beam with larger gain when scheduling the terminal devices in the second group, and then the base station receives the uplink ACK/NACK fed back by the terminal devices in the second group by using the narrow beam. That is, for terminal devices in the second subgroup, the base station still extends the number of PUCCH symbols in the time domain to support ACK/NACK feedback for more terminal devices.
Optionally, in a scheduling period, the base station schedules terminal devices in a group at the same time. I.e. the base station schedules terminal devices in the first subgroup simultaneously or the base station schedules terminal devices in the second subgroup simultaneously. Wherein, the scheduling cycle includes a full downlink time slot, a special time slot and an uplink time slot.
Optionally, the received reference signal power is a received reference signal power of a synchronization signal block or a received reference signal power of channel state information.
In a second aspect, an embodiment of the present application provides a radio access network device, where the radio access network device has a function of implementing a base station behavior in the first aspect. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions.
In one possible implementation, the apparatus includes means or modules for performing the steps of the first aspect above. For example, the apparatus includes: the processing module is used for scheduling the terminal equipment to be scheduled; the sending module is used for acquiring the beam geographic position information and the received reference signal power of the terminal equipment to be scheduled in the scheduling period; the processing module is used for generating a special-shaped wave beam according to the wave beam geographical position information and the receiving reference signal power; and the receiving module is used for receiving the uplink acknowledgement/negative acknowledgement (ACK/NACK) of the terminal equipment to be scheduled by utilizing the special-shaped wave beam.
Optionally, the base station further comprises a storage module for storing necessary program instructions and data of the base station.
In one possible implementation, the apparatus includes: a processor and a transceiver, the processor being configured to support a base station to perform the respective functions of the method provided by the first aspect described above. The transceiver is used for instructing the communication between the terminal equipment and the base station and sending the information or instructions involved in the above method to the terminal equipment. Optionally, the apparatus may further comprise a memory, coupled to the processor, that stores program instructions and data necessary for the base station.
In one possible implementation, when the apparatus is a chip in a base station, the chip includes: a processing module and a transceiver module. The processing module may be, for example, a processor in a chip, where the processor is used for scheduling a terminal device to be scheduled; the transceiver module may be, for example, an input/output interface, pin, or circuit on the chip, and transmits the scheduling information to other chips or modules coupled to the chip. The processing module can execute the computer executable instructions stored by the storage unit to support the base station to execute the method provided by the first aspect. Alternatively, the storage unit may be a storage unit in the chip, such as a register, a cache, and the like, and the storage unit may also be a storage unit located outside the chip, such as a read-only memory (ROM) or another type of static storage device that can store static information and instructions, a Random Access Memory (RAM), and the like.
In one possible implementation, the apparatus includes: a processor, baseband circuitry, radio frequency circuitry, and an antenna. The processor is used for realizing control of functions of each circuit part, the baseband circuit is used for generating scheduling information containing signaling information, and the scheduling information is sent to the terminal equipment through the antenna after analog conversion, filtering, amplification, up-conversion and the like are carried out through the radio frequency circuit. Optionally, the apparatus further comprises a memory that stores necessary program instructions and data for the base station.
The processor mentioned in any one of the above embodiments may be a general Processing Unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of programs of the data transmission methods in the above aspects.
In a third aspect, an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores computer instructions, and when the computer instructions are called, the computer instructions cause the method described in any possible implementation manner in the first aspect to be performed.
In a fourth aspect, embodiments of the present application provide a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any one of the above aspects.
In a fifth aspect, the present application provides a chip system, which includes a processor for supporting a radio access network device to implement the functions referred to in the above aspects, such as generating or processing data and/or information referred to in the above methods. In one possible design, the system-on-chip further includes a memory for storing program instructions and data necessary for the data transmission device to implement the functions of any of the above aspects. The chip system may be formed by a chip, and may also include a chip and other discrete devices.
In a possible implementation manner, when the chip system operates on the base station side, the base station may be supported to execute the method provided by the first aspect.
In a sixth aspect, an embodiment of the present application provides a communication system, where the system includes the radio access network device and the terminal device in the foregoing aspects.
According to the technical scheme, the embodiment of the application has the following advantages: and in each scheduling period T (T is 1 scheduling period), the base station generates a special-shaped wave beam according to the receiving reference signal power of the wave beam geographic position information of each terminal, and receives uplink ACK/NACK fed back by the terminal equipment by using the special-shaped wave beam. Since the special-shaped beam can point to multiple directions simultaneously for receiving information, the limitation of pointing or direction of 1 beam is not limited when multiple terminal devices send uplink ACK/NACK, so that ACK/NACK feedback can be carried out simultaneously in the same PUCCH Symbol, and the uplink throughput rate of the PUSCH is improved.
Drawings
Fig. 1 is a schematic diagram illustrating the expansion of PUCCH symbol number in the time domain in the embodiment of the present application;
fig. 2 is a schematic diagram of an embodiment of a data transmission method in an embodiment of the present application;
FIG. 3 is a schematic diagram of a scenario of data transmission in an embodiment of the present application;
fig. 4 is a schematic diagram of an embodiment of a radio access network device in an embodiment of the present application;
fig. 5 is a schematic diagram of another embodiment of a radio access network device in the embodiment of the present application.
Detailed Description
The embodiment of the application provides a data transmission method, which is used for avoiding PUCCH from expanding time domain symbols, thereby improving the uplink throughput rate of PUSCH.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
With the development of communication technology, the HARQ mechanism is adopted in MAC layer data transmission in a 5G communication system. That is, after the base station side sends the downlink data to the terminal equipment side each time, the terminal equipment side feeds back ACK/NACK to the base station side. And the base station side determines whether the downlink data is successfully sent according to the ACK/NACK fed back by the terminal equipment side. Due to the high coverage difference of the frequency band in the 5G millimeter wave system, narrow beams are introduced to improve the coverage. In a narrow beam scene, for the same terminal device, the same narrow beam is adopted for both downlink data transmission and uplink ACK/NACK reception at the base station side, thereby ensuring equivalent uplink and downlink coverage.
However, the number of analog narrow beams that can be transmitted at each time (symbol) in the mm-wave system is limited, which means that when the number of downlink scheduled users is large, a Physical Uplink Control Channel (PUCCH) does not have enough beams pointing to the terminal device, and therefore the number of PUCCH symbols needs to be expanded in the time domain to support ACK/NACK feedback of more terminal devices. An exemplary scheme is shown in fig. 1, in the exemplary method, detailed description is given in a ratio of 1:4 between a high-frequency uplink timeslot and a high-frequency downlink timeslot, where D Slot is a full downlink timeslot (that is, a base station transmits downlink data using the timeslot); the U slot is a full uplink slot (that is, the terminal device transmits uplink data using the slot); the S Slot is a special time Slot, and DL: GAP: UL in 14 symbols (Symbol) in the S Slot is 10:2:2 (i.e. 10 are downlink time slots and 2 are uplink time slots in the special time Slot). In the current downlink data transmission and PUCCH feedback scheme, when PDSCH data transmission is performed in Slot0, uplink ACK/NACK is fed back in the 13 th symbol of Slot 8. When a terminal device scheduled in Slot1 is different from a terminal device in Slot0, 1 Symbol needs to be expanded in Slot9 to be used as ACK/NACK feedback for Slot 1; when the same, symbol spreading for PUCCH is not required in Slot 9. When the terminal device scheduled in the Slot2 is different from the terminal devices in the Slot0 and the Slot1, 1 Symbol needs to be extended in the Slot9 to be used as ACK/NACK feedback of the Slot 2; when the same, symbol spreading for PUCCH is not required in Slot 9. When the terminal device scheduled in the Slot3 is different from the terminal devices in the Slot0, Slot1 and Slot2, 1 Symbol needs to be extended in the Slot9 to be used as ACK/NACK feedback of the Slot 3; when the same, symbol spreading for PUCCH is not required in Slot 9. It can be understood that when Symbol spreading is performed in a slot, spreading is preferentially performed from the 13 th Symbol, and spreading is performed in the order of 13,12 and 11. However, this is to occupy the available symbols of the Physical Uplink Shared Channel (PUSCH) in the Uplink timeslot, thereby causing waste of the available resources of the Uplink PUSCH and affecting the Uplink throughput.
In order to solve the problem, the embodiment of the present application provides the following technical solutions: in a scheduling period, after a base station schedules terminal equipment to be scheduled, the base station acquires beam geographic position information of the terminal to be scheduled and receives reference signal power; then the base station generates a special-shaped wave beam according to the wave beam geographical position information and the receiving reference signal power; and finally, the base station receives the uplink acknowledgement/negative acknowledgement (ACK/NACK) fed back by the terminal equipment to be scheduled by utilizing the special-shaped wave beam.
In this embodiment, the narrow beam is a beam having a beam width smaller than a first threshold in the radiation pattern, and the gain effect is large; and the wide beam is the beam with the beam width larger than the second threshold value in the radiation pattern, and the gain effect is smaller.
Specifically, referring to fig. 2, an embodiment of a data transmission method in the embodiment of the present application includes:
201. and the base station schedules the terminal equipment to be scheduled.
The base station sends downlink data to the terminal equipment to be scheduled and sends scheduling information to the terminal equipment to be scheduled, so that the terminal equipment to be scheduled can know resource information of sending uplink data.
202. The base station acquires the beam geographic position information and the received reference signal power of the terminal equipment to be scheduled in the scheduling period.
After the base station finishes the scheduling of the terminal equipment to be scheduled, the base station acquires the beam geographic position information and the received reference signal power of the terminal equipment to be scheduled. It can be understood that the beam geographical location information is used to indicate specific information of a beam used by the terminal device to be scheduled to upload data, such as direction information of the beam.
Optionally, the base station may further group, according to the received reference signal power or the interference-plus-noise ratio or the channel quality indicator, terminal devices belonging to the coverage area of the base station to generate a first group and a second group, where the terminal devices in the first group are terminal devices whose coverage limit values are greater than a first preset threshold value, and the terminal devices in the second group are terminal devices whose coverage limit values are smaller than the first preset threshold value, where the terminal device to be scheduled is included in the first group. It is understood that the first preset threshold is determined by the base station side, as long as the terminal devices belonging to the coverage area of the base station can be divided into terminal devices of a near base station and terminal devices of a far base station. It can be understood that the received reference signal power is the received reference signal power of the synchronization signal block or the received reference signal power of the channel state information. That is, in this embodiment, the coverage limitation value may be the received reference signal power of the synchronization signal block or the received reference signal power of the channel state information, or may be a reference such as a signal to interference plus noise ratio or a channel quality indicator. For example, setting the first preset threshold to-100 dBm, the power of the received reference signal of the synchronization signal block reported to the base station in the cell is greater than-100 dBm, and the base station is considered as a terminal device close to the base station and can be divided into the first group; if the power of the received reference signal of the synchronization signal block reported to the base station in the cell is less than-100 dBm, the base station considers the terminal equipment far away from the base station and can be divided into the second group. After the base station groups the terminal devices, the base station simultaneously schedules the terminal devices in a small group in a scheduling period. That is, the base station can only schedule the terminal devices in the first subgroup in one scheduling period, and then schedule the terminal devices in the second subgroup in the next scheduling period; or the base station can only schedule the terminal equipment in the second subgroup in one scheduling period and then schedule the terminal equipment in the first subgroup in the next scheduling period. Wherein, the scheduling cycle includes a full downlink time slot, a special time slot and an uplink time slot.
203. And the base station generates a special-shaped beam according to the beam geographical position information and the receiving reference signal power.
The base station generates a weighting coefficient of a narrow beam corresponding to the terminal equipment to be scheduled according to the received reference signal power; and then the base station generates a special-shaped beam according to the weighting coefficient and the narrow beam information corresponding to the terminal equipment to be scheduled. It can be understood that the beam geographic location information in this embodiment is used to indicate specific information of a beam used by the terminal device to be scheduled to upload data, such as direction information.
It can be understood that, the method for the base station to generate the weighting coefficient of the narrow beam corresponding to the terminal device to be scheduled according to the received reference signal power is as follows: the base station generates a weighting coefficient of the narrow beam according to the received reference signal power of the terminal equipment to be scheduled and a first formula; wherein the first formula is:
wherein, the SnWeighting coefficients for narrow beams corresponding to the nth terminal device, the RSRPn-linearA linear value of the received reference signal power of the narrow beam corresponding to the nth terminal device, wherein
The RSRPnAnd receiving a reference signal power value of a narrow beam corresponding to the nth terminal device, where n is greater than or equal to 1 and less than or equal to m, and m is the number of terminal devices to be scheduled in each scheduling period.
And the base station may generate the special-shaped beam by using the weighting coefficient and a second formula, where the second formula is:
Beam＝∑S(n)*BeamVector(n)；
wherein the Beam is used for representing the special-shaped Beam, the s (n) represents a weighting coefficient of a narrow Beam corresponding to the nth terminal device, the beamvector (n) represents a weight vector of the narrow Beam corresponding to the nth terminal device, 1 is less than or equal to the n is less than or equal to the m, and the m is the number of terminal devices to be scheduled in each scheduling period.
In an exemplary scheme, as shown in fig. 3, the base station schedules four terminal devices, namely terminal device 1, terminal device 2, terminal device 3, and terminal device 4, in the one scheduling period. The beam geographical positions of the four terminal devices are different, the base station schedules the four terminal devices to respectively feed back uplink ACK/NACK by using a time slot, and the base station generates a special-shaped beam shown in fig. 3 to receive the uplink ACK/NACK of the four terminal devices after receiving the beam geographical position information and the reference signal power of the terminal device 1, the terminal device 2, the terminal device 3 and the terminal device 4.
In this embodiment, when the base station groups terminal devices, if a terminal device in the first group is a terminal device whose coverage limitation value is greater than a second preset threshold value, and a terminal device in the second group is a terminal device whose coverage limitation value is smaller than the second preset threshold value, the special-shaped beam is a wide beam, where the second preset threshold value is greater than the first preset threshold value. It can be understood that the closer to the base station, the smaller the path loss, and the wider beam with the smaller gain can be used to correctly receive the ACK/NACK feedback information. Because the terminal devices in the second group are far from the base station and the path loss is large, the base station still adopts narrow beams with large gain when scheduling the terminal devices in the second group, and then the base station receives uplink ACK/NACK fed back by the terminal devices in the second group by using the narrow beams. That is, for terminal devices in the second subgroup, the base station still extends the number of PUCCH symbols in the time domain to support ACK/NACK feedback for more terminal devices.
204. And the base station receives the uplink ACK/NACK fed back by the terminal equipment to be scheduled by utilizing the special-shaped wave beam.
And the base station receives the uplink ACK/NACK fed back by the terminal equipment to be scheduled by utilizing the special-shaped wave beam.
In this embodiment, in each scheduling period T (T is 1 scheduling period), the base station generates a special-shaped beam according to the received reference signal power of the beam geographical location information of each terminal, and receives uplink ACK/NACK fed back by the terminal device using the special-shaped beam. Since the special-shaped beam can point to multiple directions simultaneously for receiving information, the limitation of pointing or direction of 1 beam is not limited when multiple terminal devices send uplink ACK/NACK, so that ACK/NACK feedback can be carried out simultaneously in the same PUCCH Symbol, and the uplink throughput rate of the PUSCH is improved.
In the above description of the data transmission method in the embodiment of the present application, the following description of the radio access network device in the embodiment of the present application refers to fig. 4 specifically, and the radio access network device 400 in the embodiment of the present application includes: a processing module 401 and a transceiver module 402. The apparatus 400 may be the base station in the above method embodiment, or may be one or more chips in the base station. The apparatus 400 may be configured to perform some or all of the functions of the base station in the above-described method embodiments.
The processing module 401 may be configured to perform step 201 and step 203 in the above method embodiments; the transceiver module 402 may execute the steps 202 and 204 and the step 201 of data transmission in the above method embodiments. For example, the processing module 401 schedules the terminal device to be scheduled; the transceiver module 402 obtains the beam geographical position information and the received reference signal power of the terminal device to be scheduled in the scheduling period; the processing module 401 generates a special-shaped beam according to the beam geographical position information and the received reference signal power; the transceiver module 402 receives the uplink ACK/NACK fed back by the terminal device to be scheduled by using the special-shaped beam.
Optionally, the apparatus 400 further includes a storage module 403, and the storage module 403 is coupled to the processing module 401, so that the processing module 401 can execute computer-executable instructions stored in the storage module to implement the functions of the first radio access network device in the foregoing method embodiments. In an example, the storage module optionally included in the apparatus 400 may be a storage unit inside the chip, such as a register, a cache, or the like, and the storage module may also be a storage unit outside the chip, such as a read-only memory (ROM) or another type of static storage device that can store static information and instructions, a Random Access Memory (RAM), or the like.
It should be understood that the flow executed between the modules of the radio access network device in the embodiment corresponding to fig. 4 is similar to the flow executed by the base station in the corresponding method embodiment in fig. 2, and details are not repeated here.
Fig. 5 shows a possible structure diagram of a radio access network device 500 in the above embodiment, and the apparatus 500 may be configured as the foregoing base station. The apparatus 500 may comprise: a processor 502, a computer-readable storage medium/memory 503, a transceiver 504, an input device 505, and an output device 506, and a bus 501. Wherein the processor, transceiver, computer readable storage medium, etc. are connected by a bus. The embodiments of the present application do not limit the specific connection medium between the above components.
In one example, the processor 502 schedules the terminal device to be scheduled;
the transceiver 504 acquires the beam geographical position information and the received reference signal power of the terminal device to be scheduled;
the processor 502 generates a special-shaped beam according to the beam geographical position information and the received reference signal power;
the transceiver 504 receives the uplink ACK/NACK fed back by the terminal device to be scheduled by using the special-shaped beam.
In one example, the processor 502 may include baseband circuitry, e.g., may perform data encapsulation, encoding, etc. on the downlink data or downlink scheduling information according to a protocol to generate a data packet. The transceiver 504 may include radio frequency circuitry to modulate, amplify, etc. the data packets for transmission to the terminal device.
In yet another example, the processor 502 may run an operating system that controls functions between various devices and appliances. The transceiver 504 may include a baseband circuit and a radio frequency circuit, for example, the data packet may be processed by the baseband circuit and the radio frequency circuit and then transmitted to the terminal device.
The transceiver 504 and the processor 502 may implement the corresponding steps in any embodiment of fig. 2, which are not described herein in detail.
It is understood that fig. 5 only shows a simplified design of the radio access network device, and in practical applications, the radio access network device may include any number of transceivers, processors, memories, etc., and all radio access network devices that can implement the present application are within the scope of the present application.
The processor 502 involved in the apparatus 500 may be a general-purpose processor, such as a general-purpose Central Processing Unit (CPU), a Network Processor (NP), a microprocessor, etc., or an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program according to the present disclosure. But also a Digital Signal Processor (DSP), a field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The controller/processor can also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. Processors typically perform logical and arithmetic operations based on program instructions stored within memory.
The bus 501 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 5, but this is not intended to represent only one bus or type of bus.
The computer-readable storage medium/memory 503 referred to above may also hold an operating system and other application programs. In particular, the program may include program code including computer operating instructions. More specifically, the memory may be a read-only memory (ROM), other types of static storage devices that may store static information and instructions, a Random Access Memory (RAM), other types of dynamic storage devices that may store information and instructions, a disk memory, and so forth. The memory 503 may be a combination of the above memory types. And the computer-readable storage medium/memory described above may be in the processor, may be external to the processor, or distributed across multiple entities including the processor or processing circuitry. The computer-readable storage medium/memory described above may be embodied in a computer program product. By way of example, a computer program product may include a computer-readable medium in packaging material.
Alternatively, embodiments of the present application also provide a general-purpose processing system, such as that commonly referred to as a chip, including one or more microprocessors that provide processor functionality; and an external memory providing at least a portion of the storage medium, all connected together with other supporting circuitry through an external bus architecture. The memory stores instructions that, when executed by the processor, cause the processor to perform some or all of the steps of the method for data transmission by a radio access network device in the embodiment of fig. 2, such as step 202 of fig. 2, and/or other processes for the techniques described herein.
The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware or in software instructions executed by a processor. The software instructions may consist of corresponding software modules that may be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. Additionally, the ASIC may reside in a radio access network device. Of course, the processor and the storage medium may reside as discrete components in a radio access network device.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (18)
1. A method of data transmission, comprising:
the base station schedules the terminal equipment to be scheduled;
the base station acquires the beam geographic position information and the received reference signal power of the terminal equipment to be scheduled in a scheduling period;
the base station generates a special-shaped wave beam according to the wave beam geographical position information and the receiving reference signal power;
and the base station receives uplink acknowledgement/negative acknowledgement (ACK/NACK) of the terminal equipment to be scheduled by utilizing the special-shaped wave beam.
2. The method of claim 1, further comprising:
and the base station groups the terminal equipment belonging to the coverage range of the base station according to the received reference signal power or the signal to interference plus noise ratio or the channel quality indicator to generate a first group and a second group, wherein the terminal equipment in the first group is the terminal equipment with the coverage limit value larger than a first preset threshold value, the terminal equipment in the second group is the terminal equipment with the coverage limit value smaller than the first preset threshold value, and the terminal equipment to be scheduled belongs to the first group.
3. The method of claim 1 or 2, wherein the base station generating the shaped beam according to the beam geographical position information and the received reference signal power comprises:
the base station generates a weighting coefficient of a narrow beam corresponding to the terminal to be scheduled according to the received reference signal power;
and the base station generates a special-shaped beam according to the weighting coefficient and the narrow beam information.
4. The method of claim 3, wherein the generating, by the base station, the weighting coefficient of the narrow beam corresponding to the terminal to be scheduled according to the received reference signal power comprises:
the base station generates a weighting coefficient of the narrow beam according to the received reference signal power of the terminal equipment to be scheduled and a first formula;
wherein the first formula is:
wherein, the SnWeighting coefficients for narrow beams corresponding to the nth terminal device, the RSRPn-linearA linear value of the received reference signal power of the narrow beam corresponding to the nth terminal device, wherein
The RSRPnAnd receiving a reference signal power value of a narrow beam corresponding to the nth terminal device, where n is greater than or equal to 1 and less than or equal to m, and m is the number of terminal devices to be scheduled in each scheduling period.
5. The method according to claim 2, wherein the shaped beam is a wide beam when the terminal devices in the first group are terminal devices with a coverage limit value greater than a second preset threshold value, and the terminal devices in the second group are terminal devices with a coverage limit value less than the second preset threshold value, wherein the second preset threshold value is greater than the first preset threshold value.
6. The method of claim 2, further comprising:
the base station schedules terminal equipment in the second subgroup by using narrow beams;
and the base station receives uplink ACK/NACK of the terminal equipment in the second group by using the narrow wave beam.
7. The method of claim 2, further comprising:
and in a scheduling period, the base station schedules the terminal equipment in the first group or the terminal equipment in the second group, wherein the scheduling period comprises a downlink time slot, a special time slot and an uplink time slot.
8. The method according to any of claims 1 to 7, wherein the received reference signal power is a received reference signal power of a synchronization signal block or a received reference signal power of channel state information.
9. A radio access network device, comprising:
the processing module is used for scheduling the terminal equipment to be scheduled;
the receiving module is used for acquiring the beam geographic position information and the received reference signal power of the terminal equipment to be scheduled in the scheduling period;
the processing module is used for generating a special-shaped wave beam according to the wave beam geographical position information and the receiving reference signal power;
and the receiving module is used for receiving the uplink acknowledgement/negative acknowledgement (ACK/NACK) of the terminal equipment to be scheduled by utilizing the special-shaped wave beam.
10. The ran apparatus of claim 9, wherein the processing module is further configured to group terminal apparatuses belonging to the coverage area of the base station into a first group and a second group according to the received reference signal power or the signal-to-interference-and-noise ratio or the channel quality indicator, where the terminal apparatuses in the first group are terminal apparatuses whose coverage limit values are greater than a first preset threshold, the terminal apparatuses in the second group are terminal apparatuses whose coverage limit values are smaller than the first preset threshold, and the terminal apparatuses to be scheduled are classified into the first group.
11. The ran apparatus according to claim 9 or 10, wherein the processing module is further configured to generate a weighting coefficient of a narrow beam corresponding to the terminal to be scheduled according to the received reference signal power; and generating a special-shaped beam according to the weighting coefficient and the narrow beam information.
12. The ran apparatus of claim 11, wherein the processing module is specifically configured to determine the weighting coefficient of the narrow beam according to the received reference signal power of the terminal apparatus to be scheduled and a first formula;
wherein the first formula is:
wherein, the SnWeighting coefficients for narrow beams corresponding to the nth terminal device, the RSRPn-linearA linear value of the received reference signal power of the narrow beam corresponding to the nth terminal device, wherein
The RSRPnAnd receiving a reference signal power value of a narrow beam corresponding to the nth terminal device, wherein n is greater than or equal to 1 and less than or equal to m, and m is the number of terminal devices to be scheduled in each scheduling period.
13. The ran apparatus of claim 10, wherein the shaped beam is a wide beam when the terminal apparatuses in the first group are terminal apparatuses whose coverage limit values are greater than a second preset threshold value, and the terminal apparatuses in the second group are terminal apparatuses whose coverage limit values are smaller than the second preset threshold value, wherein the second preset threshold value is greater than the first preset threshold value.
14. The radio access network device of claim 10, wherein the processing module is further configured to schedule terminal devices in the second subgroup with a narrow beam; and receiving uplink ACK/NACK of the terminal equipment in the second subgroup by utilizing the narrow beam.
15. The ran apparatus of claim 10, wherein the processing module is further configured to schedule the terminal apparatuses in the first subgroup or the terminal apparatuses in the second subgroup in a scheduling period, and the scheduling period includes a downlink timeslot, a special timeslot, and an uplink timeslot.
16. A radio access network device, comprising: a processor and a memory, wherein the memory has a computer readable program stored therein, and the processor is configured to execute the program in the memory to perform the method of any of claims 1 to 8.
17. A computer-readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of claims 1 to 8.
18. A computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any of claims 1 to 8.
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| WO2023246454A1 (en) * | 2022-06-23 | 2023-12-28 | 中兴通讯股份有限公司 | Base station beam control method and apparatus and computer-readable storage medium |
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| CN115412135B (en) * | 2021-05-28 | 2023-09-19 | 中国移动通信集团山东有限公司 | Beam forming feedback mode determining method, device, equipment and storage medium |
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| CN112511278B (en) | 2022-08-09 |
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