CN109327412B - Data transmission method and base station - Google Patents

Data transmission method and base station Download PDF

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CN109327412B
CN109327412B CN201811326645.9A CN201811326645A CN109327412B CN 109327412 B CN109327412 B CN 109327412B CN 201811326645 A CN201811326645 A CN 201811326645A CN 109327412 B CN109327412 B CN 109327412B
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bwp
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sinr
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CN109327412A (en
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李静
王友祥
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China United Network Communications Group Co Ltd
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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
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2627—Modulators
    • H04L27/2634—Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation
    • H04L27/2636—Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation with FFT or DFT modulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] transmitter or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM]
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • 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
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
    • H04L27/2607—Cyclic extensions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention provides a data transmission method and a base station, relates to the technical field of communication, and solves the problem of how to improve the uplink performance of edge users in a 5G NR system. The method comprises the steps that a base station judges whether UE is in initial access; when the base station determines that the UE is not accessed for the first time, judging whether a measurement report sent by the UE is received or not; when the base station determines to receive the measurement report, determining the number N of the frequency domain broadband part BWP of the service data carried by the transmission service according to the service type carried by the service; the base station transmits the service data carried by the service by using a specified modulation mode on a specified BWP; wherein, the designated BWP is any one of N BWPs, and the designated modulation mode comprises DFT-s-OFDM. The embodiment of the invention is used for data transmission.

Description

Data transmission method and base station
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a data transmission method and a base station.
Background
Under The 3rd Generation Partnership Project (3 GPP) New air interface (NR), The carrier frequency is higher, so that The attenuation of The carrier wave is larger when The carrier wave propagates through The air or obstacles, and The coverage area of The 5G uplink is further reduced compared with that of The 4th Generation Mobile Communication Technology (4G) in The LTE (Long Term Evolution) system. How to improve the uplink performance of the edge user of the 5G NR system has very important significance for improving the user satisfaction degree, the coverage range of a communication cell and the like.
Interference between communication cells is an important factor for restricting uplink performance of edge users, and 4G LTE systems have been in commercial use for many years. Therefore, much research is carried out on coordination and control in the aspect of 4G LTE uplink interference, and although the implementation of each manufacturer is different, interference is reduced mainly in principle by allocating orthogonal time-frequency resources to edge users.
Because the uplink of the 5G NR system not only supports discrete Fourier transform Spread spectrum Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveforms, but also introduces Cyclic prefix Orthogonal Frequency Division Multiplexing (CP-OFDM) waveforms to support more flexible data scheduling, the existing technology for uplink interference coordination and control of the 4G LTE can not be directly multiplexed on the 5G NR system; therefore, how to improve the uplink performance of the edge user in the 5G NR system becomes an urgent problem to be solved.
Disclosure of Invention
Embodiments of the present invention provide a data transmission method and a base station, which solve the problem of how to improve uplink performance of an edge user in a 5G NR system.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
in a first aspect, an embodiment of the present invention provides a data transmission method, including: the base station judges whether the UE is accessed for the first time; when the base station determines that the UE is not accessed for the first time, judging whether a measurement report sent by the UE is received or not; wherein the measurement report is used for indicating that the Reference Signal Received Power (RSRP) value of the adjacent communication cell is larger than the RSRP value of the communication cell currently serving the UE; when the base station determines to receive the measurement report, determining the number N of the frequency domain broadband part BWP of the service data carried by the transmission service according to the service type carried by the service; wherein N is an integer greater than or equal to 1; the base station transmits the service data carried by the service by using a specified modulation mode on a specified BWP; the appointed BWP comprises any one BWP in the N BWPs, and the appointed modulation mode comprises DFT-s-OFDM.
As can be seen from the foregoing solution, with the data transmission method provided in the embodiments of the present invention, if the base station determines that the UE is not initially accessed and receives a measurement report sent by the UE, it indicates that the user is an edge user; at this time, the number of BWPs needs to be reconfigured according to the service type of the service bearer established by the UE, and the service data of the service bearer is transmitted on the specified BWPs by using the specified modulation mode DFT-s-OFDM, so as to ensure the user performance of the edge user in the 5G NR system; the problem of how to improve the uplink performance of the edge user in the 5G NR system is solved.
Optionally, when the base station determines to receive the measurement report, determining, according to the service type of the service bearer, the number N of the frequency domain broadband portions BWP for transmitting the service data of the service bearer, where the number N includes: when the base station determines to receive the measurement report, inquiring a BWP configuration table according to the service type of the service bearer, and determining the number N of BWPs configured for the UE; the BWP configuration table at least includes any one of the mapping relationship tables between the service bearer type and the number of BWPs.
Optionally, the screening, by the base station, of the N BWPs, the BWPs meeting the preset condition include: when the base station determines that N is equal to 1, determining the BWP of the service data carried by the transmission service as the BWP configured to the UE; when the base station determines that N is greater than or equal to 2 and the remainder of dividing the cell ID of the communication cell of the current service UE by N is equal to 0, if the SINR of the communication cell of the current service UE is greater than or equal to the threshold Thsinr(N-1)Determining the BWP of the service data carried by the transmission service as BWP(min)(ii) a Wherein BWP(min)The BWP with the smallest frequency in the BWPs configured to the UE; if SINR of communication cell of current service UE is less than threshold Thsinr(1)When the modulation mode of the service data carried by the transmission service is determined to be BWP(max)(ii) a Wherein BWP(max)The BWP with the highest frequency in the BWPs configured for the UE; if SINR of communication cell of current service UE is less than threshold Thsinr(n+1)And is greater than or equal to a threshold Thsinr(n)Determining the BWP of the service data carried by the transmission service as BWP(N-n)(ii) a Wherein BWP(n)Is less than BWP(n+1)Frequency of, threshold Thsinr(n)Less than threshold Thsinr(n+1)N is an integer and N is an element of [1, N-2 ]]。
Optionally, the screening, by the base station, of the N BWPs, the BWPs meeting the preset condition include: when the base station determines that N is equal to 1, determining that the modulation mode of the service data carried by the transmission service is DFT-s-OFDM, and the BWP is the BWP configured for the UE; the base station determines that N is greater than or equal to 2, and when the remainder of dividing the cell ID of the communication cell of the current service UE by N is equal to N-1, if the SINR of the communication cell of the current service UE is greater than or equal to the threshold Thsinr(N+1)Determining the BWP of the service data carried by the transmission service as BWP(max)(ii) a Wherein BWP(max)For the most frequent BWP of the BWPs configured to the UE(ii) a If SINR of communication cell of current service UE is less than threshold Thsinr(1)When the BWP is determined to be BWP, the BWP transmitting the service data carried by the service is determined to be BWP(min)(ii) a Wherein BWP(min)The BWP with the smallest frequency in the BWPs configured to the UE; if SINR of communication cell of current service UE is less than threshold Thsinr(n+1)And is greater than or equal to a threshold Thsinr(n)Determining the BWP of the service data carried by the transmission service as BWP(n+1)(ii) a Wherein BWP(n)Is less than BWP(n+1)Frequency of, threshold Thsinr(n)Less than threshold Thsinr(n+1)N is an integer and N is an element of [1, N-2 ]]。
Optionally, the method further includes: when the base station determines that the UE is accessed for the first time, determining the BWP of the service data carried by the transmission service as the BWP of the full bandwidth; the base station transmits the service data carried by the service by using a specified modulation mode on a specified BWP, and the method comprises the following steps: the base station transmits the service data carried by the service by using a specified modulation mode on the BWP with the full bandwidth; wherein, the appointed modulation mode also comprises CP-OFDM.
Optionally, the method further includes: when the base station determines that the measurement report is not received, determining that the BWP of the service data carried by the transmission service is the BWP of the full bandwidth; the base station transmits the service data carried by the service by using a specified modulation mode on a specified BWP, and the method comprises the following steps: the base station transmits the service data carried by the service by using a specified modulation mode on the BWP with the full bandwidth; wherein, the appointed modulation mode also comprises CP-OFDM.
In a second aspect, an embodiment of the present invention provides a base station, including: the processing unit is used for judging whether the UE is in initial access; the processing unit is also used for judging whether the receiving and sending unit receives the measurement report sent by the UE when the UE is not accessed for the first time; wherein the measurement report is used for indicating that the RSRP value of the adjacent communication cell is larger than the RSRP value of the communication cell of the current service UE; the processing unit is further configured to determine, when the transceiver unit receives the measurement report, the number N of the frequency domain broadband portions BWP for transmitting the service data carried by the service according to the service type of the service bearer received by the transceiver unit; wherein N is an integer greater than or equal to 1; the transceiving unit is further configured to transmit service data carried by the service in a specified modulation scheme on a specified BWP; wherein, the designated BWP is any one BWP in the N BWPs determined by the processing unit, and the designated modulation mode comprises DFT-s-OFDM.
Optionally, the processing unit is specifically configured to determine, when the transceiver unit receives the measurement report, to query a BWP configuration table according to a service type of a service bearer, and determine the number N of BWPs configured to the UE; the BWP configuration table at least includes any one of the mapping relationship tables between the service bearer type and the number of BWPs.
Optionally, the processing unit is specifically configured to determine, when it is determined that N is equal to 1, that the BWP for transmitting the service data carried by the service is the BWP configured to the UE; a processing unit, specifically configured to determine that N is greater than or equal to 2, and when a remainder of division of a cell ID of a communication cell of the current serving UE by N is equal to 0, if an SINR of the communication cell of the current serving UE is greater than or equal to a threshold Thsinr(N-1)Determining the BWP of the service data carried by the transmission service as BWP(min)(ii) a Wherein BWP(min)The BWP with the smallest frequency in the BWPs configured to the UE; if SINR of communication cell of current service UE is less than threshold Thsinr(1)When the modulation mode of the service data carried by the transmission service is determined to be BWP(max)(ii) a Wherein BWP(max)The BWP with the highest frequency in the BWPs configured for the UE; if SINR of communication cell of current service UE is less than threshold Thsinr(n+1)And is greater than or equal to a threshold Thsinr(n)Determining the BWP of the service data carried by the transmission service as BWP(N-n)(ii) a Wherein BWP(n)Is less than BWP(n+1)Frequency of, threshold Thsinr(n)Less than threshold Thsinr(n+1)N is an integer and N is an element of [1, N-2 ]]。
Optionally, the processing unit is specifically configured to determine that a modulation mode of service data carried by the transmission service is DFT-s-OFDM and BWP is BWP configured to the UE when it is determined that N is equal to 1; a processing unit, specifically configured to determine that N is greater than or equal to 2, and when a remainder of division of a cell ID of a communication cell of a current serving UE by N is equal to N-1, if an SINR of the communication cell of the current serving UE is greater than or equal to a threshold Thsinr(N+1)Determining the transmission of the service data carried by the serviceBWP is BWP(max)(ii) a Wherein BWP(max)The BWP with the highest frequency in the BWPs configured for the UE; if SINR of communication cell of current service UE is less than threshold Thsinr(1)When the BWP is determined to be BWP, the BWP transmitting the service data carried by the service is determined to be BWP(min)(ii) a Wherein BWP(min)The BWP with the smallest frequency in the BWPs configured to the UE; if SINR of communication cell of current service UE is less than threshold Thsinr(n+1)And is greater than or equal to a threshold Thsinr(n)Determining the BWP of the service data carried by the transmission service as BWP(n+1)(ii) a Wherein BWP(n)Is less than BWP(n+1)Frequency of, threshold Thsinr(n)Less than threshold Thsinr(n+1)N is an integer and N is an element of [1, N-2 ]]。
Optionally, the processing unit is further configured to determine, when the UE initially accesses, that the BWP for transmitting the service data carried by the service is the BWP with the full bandwidth; a transceiving unit, configured to transmit service data carried by the service using a specified modulation scheme on the BWP with the full bandwidth determined by the processing unit; wherein, the appointed modulation mode also comprises CP-OFDM.
Optionally, the processing unit is further configured to determine, when the transceiver unit does not receive the measurement report, that the BWP for transmitting the service data carried by the service is the BWP with the full bandwidth; a transceiving unit, configured to transmit service data carried by the service using a specified modulation scheme on the BWP with the full bandwidth determined by the processing unit; wherein, the appointed modulation mode also comprises CP-OFDM.
In a third aspect, an embodiment of the present invention provides a computer storage medium, which includes instructions that, when executed on a computer, cause the computer to perform the data transmission method according to any one of the first aspect.
In a fourth aspect, an embodiment of the present invention provides a base station, including: communication interface, processor, memory, bus; the memory is used for storing computer execution instructions, the processor is connected with the memory through the bus, and when the base station runs, the processor executes the computer execution instructions stored by the memory, so that the base station executes the data transmission method provided by any one of the above first aspects.
It can be understood that any base station provided above is configured to execute the method according to the first aspect provided above, and therefore, the beneficial effects that can be achieved by the base station may refer to the beneficial effects of the method according to the first aspect and the corresponding schemes in the following detailed description, which are not described herein again.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a data transmission method according to an embodiment of the present invention;
fig. 2 is a second flowchart of a data transmission method according to an embodiment of the present invention;
fig. 3 is a schematic diagram of neighboring cells in a data transmission method according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a base station according to an embodiment of the present invention;
fig. 5 is a second schematic structural diagram of a base station according to an embodiment of the present invention.
Reference numerals:
a base station-10;
a transceiver unit-101; a processing unit-102.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
For the convenience of clearly describing the technical solutions of the embodiments of the present invention, in the embodiments of the present invention, the words "first", "second", and the like are used for distinguishing the same items or similar items with basically the same functions and actions, and those skilled in the art can understand that the words "first", "second", and the like are not limited in number or execution order.
In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
In the description of the embodiments of the present invention, the meaning of "a plurality" means two or more unless otherwise specified. For example, a plurality of networks refers to two or more networks.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. The symbol "/" herein denotes a relationship in which the associated object is or, for example, a/B denotes a or B.
The User Equipment (User Equipment, UE for short) in the embodiments of the present invention may be an intelligent mobile terminal. The intelligent mobile terminal is a mobile terminal with an operating system. The intelligent mobile terminal can be: the smart mobile terminal may be a terminal device such as a smart phone, a tablet computer, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a Personal Digital Assistant (PDA), a smart watch, and a smart bracelet, or the smart mobile terminal may be another type of smart mobile terminal, and embodiments of the present invention are not limited in particular.
The 5G NR may be deployed in a high frequency range from 3.3GHz to 24GHz, and thus each carrier frequency range in the 5G NR system may be much larger than that in a 4G LTE (Long Term evolution) system. In a 5G network, the bandwidth of a single band is close to 1GHz, and the bandwidth level of a single carrier is between 80MHz and 400 MHz. In consideration of power saving of a 5G network UE (User Equipment), a single carrier may be divided into multiple BWPs (Band Width parts). The base station may schedule the UE on one or more BWPs.
When neighboring base stations simultaneously schedule UEs using BWP of the same frequency range, inter-cell interference may occur, including: interference between adjacent base stations; and the interference between different cell UEs which are under the coverage of the base station signal and are very close to each other; therefore, when the UE of the user is in an interference area (i.e., the user is an edge user), the network quality of the UE is poor due to interference, and in order to solve the above problem, an embodiment of the present invention provides a data transmission method, where a base station may be configured to 4 BWPs (i.e., N is 4) as an example to describe how to guarantee the network quality of the edge user, which is specifically implemented as follows:
example one
An embodiment of the present invention provides a data transmission method, as shown in fig. 1, including:
s101, the base station judges whether the UE is in initial access.
S102, when the base station determines that the UE is not accessed for the first time, judging whether a measurement report sent by the UE is received or not; wherein the measurement report is used for indicating that the Reference Signal Received Power (RSRP) value of the adjacent communication cell is larger than the RSRP value of the communication cell currently serving the UE.
It should be noted that, in practical applications, the measurement report is referred to as Event a3 (neighbor times offset between times serving), which indicates that the intra-frequency domain quality is higher than the serving cell quality (i.e. the RSRP value of the reference signal received power of the neighboring communication cell is higher than the RSRP value of the communication cell currently serving the UE).
Optionally, as shown in fig. 2, the method further includes:
s105, when the base station determines that the UE is accessed for the first time, determining that the BWP of the service data carried by the transmission service is the BWP of the full bandwidth.
The base station transmits the service data carried by the service by using a specified modulation mode on a specified BWP, and the method comprises the following steps:
s1040, the base station transmits the service data carried by the service by using a specified modulation mode on the BWP of the full bandwidth; wherein, the appointed modulation mode also comprises CP-OFDM.
Note that, as shown in fig. 2, the specified BWP further includes a full bandwidth BWP; the full bandwidth BWP means that a BWP is formed by a contiguous segment of spectrum resources currently available to the base station.
S103, when the base station determines that the measurement report is received, determining the number N of the frequency domain broadband part BWP of the service data carried by the transmission service according to the service type carried by the service; wherein N is an integer greater than or equal to 1.
It should be noted that, in practical applications, when the base station configures N BWPs for the UE, the N BWPs are ordered into BWPs from low frequency to high frequency1，BWP2，....，BWPNCarrying out arrangement; finally, the base station selects BWP according to the current actual situation of the UE1，BWP2，....，BWPNThe optimal BWP transmits the service data of the UE, thereby ensuring the experience of the user.
Optionally, when determining that the measurement report is received, the base station determines, according to the service type of the service bearer, the number N of the frequency domain broadband portions BWP for transmitting the service data of the service bearer, as shown in fig. 2, where the number N includes:
s1030, when the base station determines to receive the measurement report, inquiring a BWP configuration table according to the service type of the service bearer, and determining the number N of BWPs configured for the UE; the BWP configuration table at least includes any one of the mapping relationship tables between the service bearer type and the number of BWPs.
It should be noted that, in practical applications, the 5G QoS model is based on Quality of Service (QoS), and for each QoS flow, the QoS configuration file includes QoS parameters (including a 5G QoS Identifier (5G QoS Identifier, 5QI for short), and an allocation and Retention Priority (ARP for short)); different QoS flows correspond to different 5 QI.
Specifically, table 1 shows a mapping relationship table between 5QI and QoS services (where each QoS service corresponds to a service type supported by 5G defined by a 3GPP protocol, that is, each QoS service represents a class of service), and the mapping relationship table between 5QI and the number of BWPs is shown in table 2; wherein different 5 QI's indicate different traffic bearer types.
Figure BDA0001858914760000081
Figure BDA0001858914760000091
Figure BDA0001858914760000101
Figure BDA0001858914760000111
Figure BDA0001858914760000121
Table 15 mapping relationship table between QI and QoS traffic
Figure BDA0001858914760000122
Figure BDA0001858914760000131
Table 25 QI and BWP number mapping relation table
It should be noted that each QoS service corresponds to one 5QI, and the corresponding BWP number is determined according to the 5QI corresponding to the QoS service.
Optionally, as shown in fig. 2, the method further includes:
s106, when the base station determines that the measurement report is not received, determining that the BWP of the service data carried by the transmission service is the BWP of the full bandwidth.
The base station transmits the service data carried by the service by using a specified modulation mode on a specified BWP, and the method comprises the following steps:
s1041, the base station transmits the service data carried by the service by using a specified modulation mode on the BWP of the full bandwidth; wherein, the appointed modulation mode also comprises CP-OFDM.
It should be noted that, in practical applications, when the base station does not receive the measurement report sent by the UE, it indicates that the network quality of the UE is better at this time, and therefore, the CP-OFDM is adopted as the modulation method of the uplink signal, which can carry more data; when the base station receives an A3 measurement report (i.e. Event A3) sent by the UE, which indicates that the UE is at the edge of the network, the robustness and fault tolerance of sending the uplink signal by adopting the DFT-s-OFDM uplink waveform are better.
S104, the base station transmits service data carried by the service by using a specified modulation mode on a specified BWP; the appointed BWP comprises any one BWP in the N BWPs, and the appointed modulation mode comprises DFT-s-OFDM.
It should be noted that, in practical applications, when the base station receives the measurement report sent by the UE, if the base station still transmits the service data of the UE according to the full bandwidth BWP, the transmission efficiency of the UE is not significantly improved, the power of the single PRB is reduced, and a large amount of frequency band resources are occupied; therefore, in the data transmission method provided in the embodiment of the present invention, when the base station receives the measurement report sent by the UE, a part of BWPs is allocated to the UE according to the service type of the service bearer established by the UE, so as to reduce the occupation of frequency band resources; when the base station allocates resources for sending the service data to the UE in each period, the base station selects an optimal BWP (specified BWP) from the BWPs allocated to the UE for transmitting the service data, thereby ensuring user experience.
Specifically, when the UE uses CP-OFDM as the modulation mode of the uplink signal at the edge of the communication cell, high power may bring a high peak-to-average ratio, which may affect the battery life of the UE while causing high interference to the neighboring communication cells, and greatly shorten the standby time; therefore, when receiving the measurement report sent by the UE, the invention transmits the service data carried by the service by using the modulation mode of DFT-s-OFDM on the appointed BWP, thereby ensuring the network quality of the UE, reducing the power consumption of the UE and improving the standby time of the UE.
Specifically, when the UE is in a Time Division Duplex (TDD) mode and the uplink and downlink Time domain resource ratios of the adjacent base stations are not synchronous, the UE may determine that the uplink and downlink Time domain resource ratios are not synchronous. Exemplarily, as shown in fig. 3, when a first UE, such as UE1, of a boundary of a communication cell0 covered by a first base station is scheduled by a BWP, and a second UE, such as UE2, of a region adjacent to the boundary of the communication cell0 and in a communication cell1 is scheduled by a second base station by the same BWP, if the first base station schedules the first UE to perform downlink transmission and the second base station schedules the second UE to perform uplink transmission at the same time, uplink transmission of the second UE may cause interference to downlink transmission of the first UE, and downlink transmission of the first base station may also cause interference to uplink transmission of the second base station; therefore, assuming that the bandwidth of each communication cell is 200 Physical Resource Blocks (PRB), and a plurality of PRBs form a BWP, the preferred PRB Resource index of the boundary of the communication cell0 is considered to be 0-65; the boundary preferred PRB resource index of the communication cell1 is 66-132; the boundary preferred PRB resource index of the communication cell2 is 133-199; thereby avoiding interference caused by adjacent base stations selecting the same BWP; of course, when the peak is in, if the preferred PRB resources are all occupied, the non-preferred PRB resources may be used to form a BWP for transmitting the service data; if the preferred PRB resources are not occupied at the next moment, the preferred PRB resources are used to form a BWP for transmitting the service data; therefore, the problem that the edge user resources of the communication cell are absolutely limited in order to reduce the interference of the adjacent communication cells is avoided.
Optionally, the screening, by the base station, of the N BWPs, the BWPs meeting the preset condition include:
s1042, when the base station determines that N is equal to 1, determining a BWP for transmitting service data carried by the service is a BWP configured to the UE.
In practical applications, if the base station configures only 1 BWP for the UE, the base station directly transmits the service data of the UE using the BWP.
S1043, the base station determines that N is greater than or equal to 2, and the remainder of dividing the cell ID of the communication cell currently serving the UE by N is equal to 0,
if SINR of communication cell of current service UE is greater than or equal to threshold Thsinr(N-1)Determining the BWP of the service data carried by the transmission service as BWP(min)(ii) a Wherein BWP(min)The BWP with the smallest frequency is configured to the UE.
If SINR of communication cell of current service UE is less than threshold Thsinr(1)When the modulation mode of the service data carried by the transmission service is determined to be BWP(max)(ii) a Wherein BWP(max)The BWP with the highest frequency is configured to the UE.
If SINR of communication cell of current service UE is less than threshold Thsinr(n+1)And is greater than or equal to a threshold Thsinr(n)Determining the BWP of the service data carried by the transmission service as BWP(N-n)(ii) a Wherein BWP(n)Is less than BWP(n+1)Frequency of, threshold Thsinr(n)Less than threshold Thsinr(n+1)N is an integer and N is an element of [1, N-2 ]]。
Specifically, according to the above scheme, when N is equal to 2(BWP is BWP respectively)1And BWP2) Time, including 1 threshold (Th)sinr(1)) When the SINR of the communication cell currently serving the UE is greater than or equal to the threshold Thsinr(1)Determining the BWP of the service data carried by the transmission service as BWP(1)(ii) a Wherein BWP(1)The BWP with the smallest frequency in the BWPs configured to the UE; if SINR of communication cell of current service UE is less than threshold Thsinr(1)When the modulation mode of the service data carried by the transmission service is determined to be BWP(2)(ii) a Wherein BWP(2)The BWP with the highest frequency is configured to the UE.
When N is equal to 3(BWP is BWP respectively)1、BWP2And BWP3) Time, includes 2 thresholds (Th respectively)sinr(1)And Thsinr(2)) When the SINR of the communication cell currently serving the UE is greater than or equal to the threshold Thsinr(2)Determining the BWP of the service data carried by the transmission service as BWP(1)(ii) a Wherein BWP(1)The BWP with the smallest frequency in the BWPs configured to the UE; if SINR of communication cell of current service UE is less than threshold Thsinr(1)When the modulation mode of the service data carried by the transmission service is determined to be BWP(3)(ii) a Wherein BWP(3)The BWP with the highest frequency in the BWPs configured for the UE; if SINR of communication cell of current service UE is less than threshold Thsinr(2)And is greater than or equal to a threshold Thsinr(1)Determining the BWP of the service data carried by the transmission service as BWP(2)(N＝3，n＝1)。
When N is equal to 4(BWP is BWP respectively)1、BWP2、BWP3And BWP4) Time, includes 2 thresholds (Th respectively)sinr(1)、Thsinr(2)And Thsinr(3)) When the SINR of the communication cell currently serving the UE is greater than or equal to the threshold Thsinr(3)Determining the BWP of the service data carried by the transmission service as BWP(1)(ii) a Wherein BWP(1)The BWP with the smallest frequency in the BWPs configured to the UE; if SINR of communication cell of current service UE is less than threshold Thsinr(1)When the modulation mode of the service data carried by the transmission service is determined to be BWP(4)(ii) a Wherein BWP(4)The BWP with the highest frequency in the BWPs configured for the UE; if SINR of communication cell of current service UE is less than threshold Thsinr(2)And is greater than or equal to a threshold Thsinr(1)Determining the BWP of the service data carried by the transmission service as BWP(3)(N ═ 4, N ═ 1); . If SINR of communication cell of current service UE is less than threshold Thsinr(3)And is greater than or equal to a threshold Thsinr(2)Determining the BWP of the service data carried by the transmission service as BWP(2)(N＝4，n＝2)。
Optionally, the screening, by the base station, of the N BWPs, the BWPs meeting the preset condition include:
s1043, when the base station determines that N is equal to 1, determining that the modulation mode of the service data carried by the transmission service is DFT-S-OFDM, and the BWP is the BWP configured for the UE.
S1044, when the base station determines that N is greater than or equal to 2 and the remainder of dividing the cell ID of the communication cell currently serving the UE by N is equal to N-1,
if SINR of communication cell of current service UE is greater than or equal to threshold Thsinr(N+1)Determining the BWP of the service data carried by the transmission service as BWP(max)(ii) a Wherein BWP(max)The BWP with the highest frequency is configured to the UE.
If SINR of communication cell of current service UE is less than threshold Thsinr(1)When the BWP is determined to be BWP, the BWP transmitting the service data carried by the service is determined to be BWP(min)(ii) a Wherein BWP(min)The BWP with the smallest frequency is configured to the UE.
If SINR of communication cell of current service UE is less than threshold Thsinr(n+1)And is greater than or equal to a threshold Thsinr(n)Determining the BWP of the service data carried by the transmission service as BWP(n+1)(ii) a Wherein BWP(n)Is less than BWP(n+1)Frequency of, threshold Thsinr(n)Less than threshold Thsinr(n+1)N is an integer and N is an element of [1, N-2 ]]。
Specifically, according to the above scheme, when N is equal to 2(BWP is BWP respectively)1And BWP2) Time, including 1 threshold (Th)sinr(1)) When the SINR of the communication cell currently serving the UE is greater than or equal to the threshold Thsinr(1)Determining the BWP of the service data carried by the transmission service as BWP(2)(ii) a Wherein BWP(2)The BWP with the highest frequency in the BWPs configured for the UE; if SINR of communication cell of current service UE is less than threshold Thsinr(1)When the modulation mode of the service data carried by the transmission service is determined to be BWP(1)(ii) a Wherein BWP(1)The BWP with the smallest frequency is configured to the UE.
When N is equal to 3(BWP is BWP respectively)1、BWP2And BWP3) Time, includes 2 thresholds (Th respectively)sinr(1)And Thsinr(2)) When the SINR of the communication cell currently serving the UE is greater than or equal to the threshold Thsinr(2)Determining transport traffic bearersBWP of service data is BWP(3)(ii) a Wherein BWP(3)The BWP with the highest frequency in the BWPs configured for the UE; if SINR of communication cell of current service UE is less than threshold Thsinr(1)When the modulation mode of the service data carried by the transmission service is determined to be BWP(1)(ii) a Wherein BWP(1)The BWP with the smallest frequency in the BWPs configured to the UE; if SINR of communication cell of current service UE is less than threshold Thsinr(2)And is greater than or equal to a threshold Thsinr(1)Determining the BWP of the service data carried by the transmission service as BWP(2)(n＝1)。
When N is equal to 4(BWP is BWP respectively)1、BWP2、BWP3And BWP4) Time, includes 2 thresholds (Th respectively)sinr(1)、Thsinr(2)And Thsinr(3)) When the SINR of the communication cell currently serving the UE is greater than or equal to the threshold Thsinr(3)Determining the BWP of the service data carried by the transmission service as BWP(4)(ii) a Wherein BWP(4)The BWP with the highest frequency in the BWPs configured for the UE; if SINR of communication cell of current service UE is less than threshold Thsinr(1)When the modulation mode of the service data carried by the transmission service is determined to be BWP(1)(ii) a Wherein BWP(1)The BWP with the smallest frequency in the BWPs configured to the UE; if SINR of communication cell of current service UE is less than threshold Thsinr(2)And is greater than or equal to a threshold Thsinr(1)Determining the BWP of the service data carried by the transmission service as BWP(2)(n ═ 1); . If SINR of communication cell of current service UE is less than threshold Thsinr(3)And is greater than or equal to a threshold Thsinr(2)Determining the BWP of the service data carried by the transmission service as BWP(3)(n＝2)。
As can be seen from the foregoing solution, with the data transmission method provided in the embodiment of the present invention, if the UE does not initially access and receives a measurement report sent by the UE, the base station determines that the user is an edge user; at this time, the number of BWPs needs to be reconfigured according to the service type of the service bearer established by the UE, and the service data of the service bearer is transmitted on the specified BWP by using the specified modulation mode DFT-s-OFDM; that is, the base station confirms the modulation mode used by the service data according to the position of the user, when the position of the user is at the edge of the communication cell, configures BWP according to the service type carried by the user, then selects which BWP to activate according to the SINR of the user to transmit the service data, and finally selects the optimal BWP from the activated BWP to transmit the service data, thereby ensuring the user experience; the problem of how to improve the uplink performance of the edge user in the 5G NR system is solved.
A second aspect, an embodiment of the present invention provides a base station 10, as shown in fig. 4, including:
a processing unit 102, configured to determine whether the UE is initially accessed.
The processing unit 102 is further configured to determine whether the transceiver unit 101 receives a measurement report sent by the UE when the UE is not initially accessed; wherein the measurement report is used to indicate that the RSRP value of the neighboring communication cell is greater than the RSRP value of the communication cell currently serving the UE.
The processing unit 102 is further configured to determine, when the transceiver unit 101 receives the measurement report, the number N of the frequency domain broadband portions BWP for transmitting the service data carried by the service according to the service type of the service bearer received by the transceiver unit; wherein N is an integer greater than or equal to 1.
The transceiving unit 101 is further configured to transmit service data carried by the service using a specified modulation scheme on a specified BWP; wherein, the designated BWP is any BWP of the N BWPs determined by the processing unit 102, and the designated modulation scheme includes DFT-s-OFDM.
Optionally, the processing unit 102 is specifically configured to determine, when the transceiver unit 101 receives the measurement report, to query a BWP configuration table according to a service type of a service bearer, and determine the number N of BWPs configured to the UE; the BWP configuration table at least includes any one of the mapping relationship tables between the service bearer type and the number of BWPs.
Optionally, the processing unit 102 is specifically configured to determine, when it is determined that N is equal to 1, that the BWP for transmitting the service data carried by the service is the BWP configured to the UE; the processing unit 102 is specifically configured to determine that N is greater than or equal to 2, and a remainder of division of a cell ID of a communication cell currently serving the UE by N is equal toWhen 0, if SINR of communication cell of current service UE is greater than or equal to threshold Thsinr(N-1)Determining the BWP of the service data carried by the transmission service as BWP(min)(ii) a Wherein BWP(min)The BWP with the smallest frequency in the BWPs configured to the UE; if SINR of communication cell of current service UE is less than threshold Thsinr(1)When the modulation mode of the service data carried by the transmission service is determined to be BWP(max)(ii) a Wherein BWP(max)The BWP with the highest frequency in the BWPs configured for the UE; if SINR of communication cell of current service UE is less than threshold Thsinr(n+1)And is greater than or equal to a threshold Thsinr(n)Determining the BWP of the service data carried by the transmission service as BWP(N-n)(ii) a Wherein BWP(n)Is less than BWP(n+1)Frequency of, threshold Thsinr(n)Less than threshold Thsinr(n+1)N is an integer and N is an element of [1, N-2 ]]。
Optionally, the processing unit 102 is specifically configured to determine that, when it is determined that N is equal to 1, a modulation mode of service data carried by the transmission service is DFT-s-OFDM, and BWP is BWP configured to the UE; the processing unit 102 is specifically configured to determine that N is greater than or equal to 2, and when a remainder of division of a cell ID of a communication cell of a current serving UE by N is equal to N-1, if an SINR of the communication cell of the current serving UE is greater than or equal to a threshold Thsinr(N+1)Determining the BWP of the service data carried by the transmission service as BWP(max)(ii) a Wherein BWP(max)The BWP with the highest frequency in the BWPs configured for the UE; if SINR of communication cell of current service UE is less than threshold Thsinr(1)When the BWP is determined to be BWP, the BWP transmitting the service data carried by the service is determined to be BWP(min)(ii) a Wherein BWP(min)The BWP with the smallest frequency in the BWPs configured to the UE; if SINR of communication cell of current service UE is less than threshold Thsinr(n+1)And is greater than or equal to a threshold Thsinr(n)Determining the BWP of the service data carried by the transmission service as BWP(n+1)(ii) a Wherein BWP(n)Is less than BWP(n+1)Frequency of, threshold Thsinr(n)Less than threshold Thsinr(n+1)N is an integer and N is an element of [1, N-2 ]]。
Optionally, the processing unit 102 is further configured to determine, when the UE initially accesses, that the BWP of the service data carried by the transmission service is the BWP with the full bandwidth; a transceiving unit 101, configured to transmit service data carried by a service using a specified modulation scheme on the BWP with the full bandwidth determined by the processing unit 102; wherein, the appointed modulation mode also comprises CP-OFDM.
Optionally, the processing unit 102 is further configured to determine, when the transceiver unit 101 does not receive the measurement report, that the BWP of the service data carried by the transmission service is the full bandwidth BWP; a transceiving unit 101, configured to transmit service data carried by a service using a specified modulation scheme on the BWP with the full bandwidth determined by the processing unit 102; wherein, the appointed modulation mode also comprises CP-OFDM.
All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and the function thereof is not described herein again.
In case of using an integrated module, the base station comprises: the device comprises a transceiving unit, a processing unit and a storage unit. The processing unit is used for controlling and managing the actions of the base station, for example, the processing unit is used for supporting the base station to execute the processes S101, S102, S103 and S104 in fig. 1; the transceiver unit is used for supporting information interaction between the base station and other equipment. A storage unit for storing program codes and data of the base station.
For example, the processing unit is a processor, the storage unit is a memory, and the transceiver unit is a communication interface. The base station shown in fig. 5 includes a communication interface 501, a processor 502, a memory 503, and a bus 504, where the communication interface 501 and the processor 502 are connected to the memory 503 through the bus 504.
The processor 502 may be a general-purpose Central Processing Unit (CPU), a microprocessor, an Application-Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to control the execution of programs in accordance with the teachings of the present disclosure.
The Memory 503 may be a Read-Only Memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical Disc storage, optical Disc storage (including Compact Disc, laser Disc, optical Disc, digital versatile Disc, blu-ray Disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to these. The memory may be self-contained and coupled to the processor via a bus. The memory may also be integral to the processor.
The memory 503 is used for storing application program codes for executing the scheme of the application, and the processor 502 controls the execution. The communication interface 501 is used for information interaction with other devices, such as a remote controller. The processor 502 is configured to execute application program code stored in the memory 503 to implement the methods described in the embodiments of the present application.
Further, a computing storage medium (or media) is also provided, comprising instructions which, when executed, perform the method operations performed by the base station in the above embodiments. Additionally, a computer program product is also provided, comprising the above-described computing storage medium (or media).
It should be understood that, in various embodiments of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
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 ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the units is only one logical functional 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 invention 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 functions, if implemented in the form of software functional units 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 invention may be embodied in the form of 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 invention. 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.
It can be understood that any base station provided above is configured to execute the method according to the first aspect provided above, and therefore, the beneficial effects that can be achieved by the base station may refer to the beneficial effects of the method according to the first aspect and the corresponding schemes in the following detailed description, which are not described herein again.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (14)

1. A method of data transmission, comprising:
the base station judges whether the UE is accessed for the first time;
when the base station determines that the UE is not accessed for the first time, judging whether a measurement report sent by the UE is received or not; wherein the measurement report is used to indicate that a reference signal received power, RSRP, value of a neighboring communication cell is greater than an RSRP value of a communication cell currently serving the UE;
when the base station determines to receive the measurement report, determining the number N of the frequency domain broadband part BWP for transmitting the service data of the service bearer according to the service type of the service bearer; wherein N is an integer greater than or equal to 1;
the base station transmits the service data carried by the service by using a specified modulation mode on a specified BWP; wherein the specified BWP comprises any one BWP of the N BWPs, and the specified modulation mode comprises DFT-s-OFDM.
2. The data transmission method according to claim 1, wherein the determining, by the base station, the number N of frequency-domain broadband portions BWP for transmitting the service data of the service bearer according to the service type of the service bearer when the measurement report is received comprises:
when the base station determines to receive the measurement report, inquiring a BWP configuration table according to the service type of the service bearer, and determining the number N of BWPs configured to the UE; wherein, the BWP configuration table at least includes any one of the mapping relationship tables of the service bearer type and the BWP number.
3. The data transmission method according to claim 1, wherein the base station selects, from the N BWPs, a BWP meeting a preset condition, including:
when the base station determines that N is equal to 1, determining that the BWP transmitting the service data of the service bearer is the BWP configured to the UE;
the base station determines that N is greater than or equal to 2, and when the remainder of dividing the cell ID of the communication cell currently serving the UE by N is equal to 0,
if SINR of the communication cell currently serving the UE is greater than or equal to threshold Thsinr(N-1)Determining the BWP transmitting the service data of the service bearer as BWP(min)(ii) a Wherein the BWP(min)The BWP with the smallest frequency is configured to the UE;
if SINR of the communication cell currently serving the UE is smaller than threshold Thsinr(l)When the modulation mode of the service data of the service bearer is determined to be BWP (broadband over broadband protocol)(max)(ii) a Wherein the BWP(max)The BWP with the highest frequency is configured to the UE;
if SINR of the communication cell currently serving the UE is smaller than threshold Thsinr(n+1)And is greater than or equal to a threshold Thsinr(n)Determining to transmit the service data carried by the serviceBWP is BWP(N-n)(ii) a Wherein BWP(n)Is less than BWP(n+1)Frequency of, threshold Thsinr(n)Less than threshold Thsinr(n+1)N is an integer and N is an element of [1, N-2 ]]。
4. The data transmission method according to claim 1, wherein the base station selects, from the N BWPs, a BWP meeting a preset condition, including:
when the base station determines that N is equal to 1, determining that the modulation mode for transmitting the service data carried by the service is DFT-s-OFDM, and the BWP is the BWP configured for the UE;
the base station determines that N is greater than or equal to 2, and when the remainder of dividing the cell ID of the communication cell currently serving the UE by N is equal to N-1,
if SINR of the communication cell currently serving the UE is greater than or equal to threshold Thsinr(N+1)Determining the BWP transmitting the service data of the service bearer as BWP(max)(ii) a Wherein the BWP(max)The BWP with the highest frequency is configured to the UE;
if SINR of the communication cell currently serving the UE is smaller than threshold Thsinr(1)When the business data is loaded, determining the BWP of the business data of the business load as BWP(min)(ii) a Wherein the BWP(min)The BWP with the smallest frequency is configured to the UE;
if SINR of the communication cell currently serving the UE is smaller than threshold Thsinr(n+1)And is greater than or equal to a threshold Thsinr(n)Determining the BWP transmitting the service data of the service bearer as BWP(n+1)(ii) a Wherein BWP(n)Is less than BWP(n+1)Frequency of, threshold Thsinr(n)Less than threshold Thsinr(n+1)N is an integer and N is an element of [1, N-2 ]]。
5. The data transmission method of claim 1, further comprising:
when the base station determines that the UE is accessed for the first time, determining that the BWP for transmitting the service data of the service bearer is the BWP with full bandwidth;
the base station transmits the service data carried by the service by using a specified modulation mode on a specified BWP, and the method comprises the following steps:
the base station transmits the service data carried by the service by using a specified modulation mode on the BWP with the full bandwidth; wherein the specified modulation mode further comprises CP-OFDM.
6. The data transmission method of claim 1, further comprising:
when the base station determines that the measurement report is not received, determining that the BWP transmitting the service data of the service bearer is the BWP of the full bandwidth;
the base station transmits the service data carried by the service by using a specified modulation mode on a specified BWP, and the method comprises the following steps:
the base station transmits the service data carried by the service by using a specified modulation mode on the BWP with the full bandwidth; wherein the specified modulation mode further comprises CP-OFDM.
7. A base station, comprising:
the processing unit is used for judging whether the UE is in initial access;
the processing unit is further configured to determine whether the transceiver unit receives a measurement report sent by the UE when it is determined that the UE is not initially accessed; wherein the measurement report is used to indicate that an RSRP value of a neighboring communication cell is greater than an RSRP value of a communication cell currently serving the UE;
the processing unit is further configured to determine, when the transceiver unit receives the measurement report, the number N of frequency domain broadband portions BWP for transmitting the service data carried by the service according to the service type of the service bearer received by the transceiver unit; wherein N is an integer greater than or equal to 1;
the transceiving unit is further configured to transmit the service data carried by the service in a specified modulation manner on a specified BWP; wherein the specified BWP is any one BWP of the N BWPs determined by the processing unit, and the specified modulation scheme includes DFT-s-OFDM.
8. The base station of claim 7, wherein the processing unit is specifically configured to, when determining that the transceiver unit receives the measurement report, query a BWP configuration table according to a service type of the service bearer, and determine the number N of BWPs configured to the UE; wherein, the BWP configuration table at least includes any one of the mapping relationship tables of the service bearer type and the BWP number.
9. The base station according to claim 7, wherein the processing unit is specifically configured to determine, when it is determined that N is equal to 1, that the BWP for transmitting the service data of the service bearer is the BWP configured to the UE;
the processing unit is specifically configured to determine that N is greater than or equal to 2, and when a remainder of division of a cell ID of a communication cell currently serving the UE by N is equal to 0,
if SINR of the communication cell currently serving the UE is greater than or equal to threshold Thsinr(N-1)Determining the BWP transmitting the service data of the service bearer as BWP(min)(ii) a Wherein the BWP(min)The BWP with the smallest frequency is configured to the UE;
if SINR of the communication cell currently serving the UE is smaller than threshold Thsinr(1)When the modulation mode of the service data of the service bearer is determined to be BWP (broadband over broadband protocol)(max)(ii) a Wherein the BWP(max)The BWP with the highest frequency is configured to the UE;
if SINR of the communication cell currently serving the UE is smaller than threshold Thsinr(n+1)And is greater than or equal to a threshold Thsinr(n)Determining the BWP transmitting the service data of the service bearer as BWP(N-n)(ii) a Wherein BWP(n)Is less than BWP(n+1)Frequency of, threshold Thsinr(n)Less than threshold Thsinr(n+1)N is an integer and N is an element of [1, N-2 ]]。
10. The base station according to claim 7, wherein the processing unit is specifically configured to determine that, when N is equal to 1, a modulation scheme for transmitting the service data of the service bearer is DFT-s-OFDM, and BWP is BWP configured to the UE;
the processing unit is specifically configured to determine that N is greater than or equal to 2, and when a remainder of division of a cell ID of a communication cell currently serving the UE by N is equal to N-1,
if SINR of the communication cell currently serving the UE is greater than or equal to threshold Thsinr(N+1)Determining the BWP transmitting the service data of the service bearer as BWP(max)(ii) a Wherein the BWP(max)The BWP with the highest frequency is configured to the UE;
if SINR of the communication cell currently serving the UE is smaller than threshold Thsinr(1)When the business data is loaded, determining the BWP of the business data of the business load as BWP(min)(ii) a Wherein the BWP(min)The BWP with the smallest frequency is configured to the UE;
if SINR of the communication cell currently serving the UE is smaller than threshold Thsinr(n+1)And is greater than or equal to a threshold Thsinr(n)Determining the BWP transmitting the service data of the service bearer as BWP(n+1)(ii) a Wherein BWP(n)Is less than BWP(n+1)Frequency of, threshold Thsinr(n)Less than threshold Thsinr(n+1)N is an integer and N is an element of [1, N-2 ]]。
11. The base station of claim 7, wherein the processing unit is further configured to determine, when the UE initially accesses, that BWP for transmitting the service data of the service bearer is a full bandwidth BWP;
the transceiver unit is specifically configured to transmit the service data carried by the service in a specified modulation manner on the BWP with the full bandwidth determined by the processing unit; wherein the specified modulation mode further comprises CP-OFDM.
12. The base station of claim 7, wherein the processing unit is further configured to determine, when it is determined that the transceiver unit does not receive the measurement report, that the BWP for transmitting the traffic data of the traffic bearer is a full bandwidth BWP;
the transceiver unit is specifically configured to transmit the service data carried by the service in a specified modulation manner on the BWP with the full bandwidth determined by the processing unit; wherein the specified modulation mode further comprises CP-OFDM.
13. A computer storage medium comprising instructions which, when run on a computer, cause the computer to perform the data transmission method of any one of claims 1-6 above.
14. A base station, comprising: communication interface, processor, memory, bus; the memory is used for storing computer execution instructions, the processor is connected with the memory through the bus, and when the base station runs, the processor executes the computer execution instructions stored by the memory so as to enable the base station to execute the data transmission method according to any one of the claims 1-6.
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