CN111615212A - Uplink multi-BWP combined scheduling-free sending method and system in 5G communication - Google Patents

Uplink multi-BWP combined scheduling-free sending method and system in 5G communication Download PDF

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CN111615212A
CN111615212A CN202010295023.5A CN202010295023A CN111615212A CN 111615212 A CN111615212 A CN 111615212A CN 202010295023 A CN202010295023 A CN 202010295023A CN 111615212 A CN111615212 A CN 111615212A
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scheduling
free
bwp
resource
uplink
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CN111615212B (en
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任剑
高峰
吕国荣
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Beijing Yunzhi Soft Communication Information Technology Co ltd
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Beijing Yunzhi Soft Communication Information Technology Co ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0833Random access procedures, e.g. with 4-step access
    • H04W74/0841Random access procedures, e.g. with 4-step access with collision treatment
    • H04W74/085Random access procedures, e.g. with 4-step access with collision treatment collision avoidance
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/002Transmission of channel access control information

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Abstract

The application discloses a scheduling-free sending method and system for uplink multi-BWP combination in 5G communication, which relates to the technical field of mobile communication, and the method comprises the following steps: configuring a plurality of BWPs for a terminal through high-level signaling, and respectively configuring at least one group of scheduling-free resources on the BWPs; acquiring the number of activated users on scheduling-free resources corresponding to each BWP, and calculating the collision reference probability of uplink resources according to the number of the scheduling-free resources corresponding to a plurality of BWPs and the number of the activated users on each scheduling-free resource; determining BWP (scheduling-free transmission) of the terminal according to the collision reference probability, and taking the BWP as the BWP; scheduling-free sending of uplink resources is carried out simultaneously on scheduling-free resources corresponding to the scheduling-free sending BWP; and performing terminal activation detection and data reception on a scheduling-free resource corresponding to the scheduling-free sending BWP, and judging whether uplink data is successfully sent. Thus, the probability of the dispatch-free collision is favorably reduced.

Description

Uplink multi-BWP combined scheduling-free sending method and system in 5G communication
Technical Field
The present application relates to the field of mobile communication technologies, and in particular, to a method and a system for uplink multiple bwp (bandwidth part) joint scheduling-free transmission in 5G communication.
Background
With the commercialization of fourth-Generation mobile communication technology and the continuous growth of mobile services, research work for fifth-Generation mobile communication technology (5th-Generation, 5G) has been started worldwide. 5G is a multi-technology converged communication, and meets the requirements of wide data and connection services through technology alternation and innovation. In RAN #71 conference, the third Generation Partnership Project (3rd Generation Partnership Project, 3GPP) established a Study Item (SI) for the 5G new air interface study. According to the 5G division of vertical services, the 3GPP mainly studies the 5G new air interface technology from three aspects, namely enhanced wireless broadband (eMBB), low-latency high-reliability communications (URLLC) and massive machine type communications (mtc).
In the prior art, a non-orthogonal multiple access transmission technology is usually adopted, and a base station performs activation detection and data reception of users to ensure uplink multi-user transmission capability. However, the non-orthogonal multiple access transmission technique has the following disadvantages:
first, the receiver is highly complex. The non-orthogonal multiple access transmission technology needs to adopt a non-linear receiving algorithm, and along with the increase of modulation grade and multiplexing user data, the complexity of the algorithm increases exponentially;
second, reception performance is degraded. When the channel condition of the user is poor, the interference among multiple users is severe, which may affect the receiving performance of the uplink data.
Disclosure of Invention
In view of this, the present application provides a scheduling-free sending method and system for uplink multi BWP combination in 5G communication, which can reduce the probability of scheduling-free collision through the control of a base station; the joint scheduling-free transmission through multiple BWPs is beneficial to simplifying the complexity of the receiving end and simultaneously beneficial to improving the receiving performance of the receiving end.
In order to solve the technical problem, the following technical scheme is adopted:
in a first aspect, the present application provides a method for sending an uplink multi-BWP combined exempt scheduling in 5G communication, including:
configuring a plurality of BWPs for a terminal through a high-level signaling, and configuring at least one group of scheduling-free resources on the BWPs respectively, wherein the scheduling-free resources corresponding to different BWPs adopt different MCS levels, different time-frequency resource lengths and different repetition factors;
acquiring the number of activated users on scheduling-free resources corresponding to each BWP, and calculating the collision reference probability of uplink resources according to the number of the scheduling-free resources corresponding to a plurality of BWPs and the number of the activated users on each scheduling-free resource;
determining BWP (scheduling-free transmission) of the terminal according to the collision reference probability, and taking the BWP as the BWP;
scheduling-free sending of uplink resources is carried out simultaneously on scheduling-free resources corresponding to the scheduling-free sending BWP;
performing terminal activation detection and data reception on a non-scheduling resource corresponding to the non-scheduling transmission BWP, and judging whether uplink data is successfully transmitted, wherein if the data is correctly received on the non-scheduling resource corresponding to at least one non-scheduling transmission BWP, the uplink data is successfully transmitted; if the non-scheduling resource corresponding to each non-scheduling sending BWP does not receive data correctly, it indicates that the uplink data is not sent successfully.
Optionally, wherein:
calculating the collision reference probability of the uplink resource according to the number of the scheduling-free resources corresponding to the BWPs and the number of the active users on each scheduling-free resource, specifically:
calculating the total quantity N1 of the non-scheduling resources corresponding to a plurality of BWPs, wherein N1 is greater than or equal to 1 and is a positive integer;
calculating the total number of active users N2 averaged to each time slot, wherein N2 is greater than or equal to 1 and is a positive integer;
calculating collision reference probability on each scheduling-free resource in each time slot according to the total number N1 of the scheduling-free resources corresponding to the BWPs and the total number N2 of the activated users averaged to each time slot, wherein N2/N1 is m + (N/N1), and N is more than or equal to 1 and less than N1; when m is 0, the collision reference probability on each scheduling-free resource is 0; when m is 1, the collision reference probability of the uplink resource corresponding to the N scheduling-free resources is N/N1.
Optionally, wherein:
determining a BWP for the terminal to perform scheduling-free transmission according to the collision reference probability, where the BWP is used as the scheduling-free transmission BWP, and specifically:
sequencing the collision reference probabilities of the uplink resources corresponding to the scheduling-free resources according to the sequence from large to small or from small to large;
selecting a critical reference probability from the collision reference probabilities;
and taking the BWP corresponding to the non-scheduling resource with the collision reference probability less than or equal to the critical reference probability as the non-scheduling sending BWP.
Optionally, wherein:
after the collision reference probability of the uplink resource is calculated according to the number of the non-scheduling resources corresponding to the BWPs and the number of the active users on each non-scheduling resource, the method further includes:
and updating the collision reference probability of the uplink resource corresponding to each scheduling-free resource periodically according to a preset period, and determining a new scheduling-free sending BWP according to the updated collision reference probability.
In a second aspect, the present application further provides an uplink multi BWP combined dispatch-free transmission system in 5G communication, including: a base station and a terminal;
the base station is used for configuring a plurality of BWPs for the terminal through high-level signaling, and respectively configuring at least one group of scheduling-free resources on the BWPs, wherein the scheduling-free resources corresponding to different BWPs adopt different MCS levels, different time-frequency resource lengths and different repetition factors; the resource scheduling method is also used for acquiring the number of the activated users on the scheduling-free resources corresponding to each BWP, and calculating the collision reference probability of the uplink resources according to the number of the scheduling-free resources corresponding to the BWPs and the number of the activated users on each scheduling-free resource; determining BWP (scheduling-free transmission) of the terminal according to the collision reference probability, and taking the BWP as the BWP;
the terminal is used for simultaneously carrying out scheduling-free transmission of uplink resources on scheduling-free resources corresponding to the scheduling-free transmission BWP;
the base station is further configured to perform terminal activation detection and data reception on a scheduling-free resource corresponding to the scheduling-free sending BWP, and determine whether uplink data is successfully sent, where if data is correctly received on the scheduling-free resource corresponding to at least one scheduling-free sending BWP, the base station indicates that the uplink data is successfully sent; if the non-scheduling resource corresponding to each non-scheduling sending BWP does not receive data correctly, it indicates that the uplink data is not sent successfully.
Optionally, wherein:
the base station is further configured to:
calculating the total quantity N1 of the non-scheduling resources corresponding to a plurality of BWPs, wherein N1 is greater than or equal to 1 and is a positive integer;
calculating the total number of active users N2 averaged to each time slot, wherein N2 is greater than or equal to 1 and is a positive integer;
calculating collision reference probability on each scheduling-free resource in each time slot according to the total number N1 of the scheduling-free resources corresponding to the BWPs and the total number N2 of the activated users averaged to each time slot, wherein N2/N1 is m + (N/N1), and N is more than or equal to 1 and less than N1; when m is 0, the collision reference probability on each scheduling-free resource is 0; when m is 1, the collision reference probability of the uplink resource corresponding to the N scheduling-free resources is N/N1.
Optionally, wherein:
the base station is further configured to:
sequencing the collision reference probabilities of the uplink resources corresponding to the scheduling-free resources according to the sequence from large to small or from small to large;
selecting a critical reference probability from the collision reference probabilities;
and taking the BWP corresponding to the non-scheduling resource with the collision reference probability less than or equal to the critical reference probability as the non-scheduling sending BWP.
Optionally, wherein:
the base station is further configured to:
and updating the collision reference probability of the uplink resource corresponding to each scheduling-free resource periodically according to a preset period, and determining a new scheduling-free sending BWP according to the updated collision reference probability.
Compared with the prior art, the uplink multi-BWP combined scheduling-free sending method and system in 5G communication described in the present application achieve the following effects:
in the uplink multi-BWP combined non-scheduling sending method and system in 5G communication provided by the application, a plurality of BWPs are configured for a terminal through a high-level signaling, and at least one group of non-scheduling resources are respectively configured on the BWPs; acquiring the number of activated users on scheduling-free resources corresponding to each BWP, and calculating the collision reference probability of uplink resources according to the number of the scheduling-free resources corresponding to a plurality of BWPs and the number of the activated users on each scheduling-free resource; and determining the BWP which is subjected to the non-scheduling transmission by the terminal according to the collision reference probability as the non-scheduling transmission BWP, and finally performing the non-scheduling transmission of the non-scheduling resource uplink resource corresponding to the non-scheduling transmission BWP. Therefore, the probability of scheduling-free collision can be reduced through the control of the base station, and the complexity of a receiving end is facilitated to be simplified through the combined scheduling-free transmission of a plurality of BWPs, and meanwhile, the receiving performance of the receiving end is facilitated to be improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a flowchart illustrating an uplink multi BWP combined scheduling-free transmission method in 5G communication according to an embodiment of the present application;
FIG. 2 is a flowchart illustrating a method for calculating a collision reference probability of an uplink resource;
FIG. 3 is a flow diagram illustrating the selection of a schedule-free transmission BWP;
FIG. 4 is a diagram illustrating a multi-BWP non-scheduling resource allocation provided by the present application;
FIG. 5 is a diagram illustrating a non-scheduled resource allocation update.
Detailed Description
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims.
Terms that may appear in the present application will be explained below.
5G: 5th-Generation, fifth Generation mobile communication technology;
eMBB: enhanced mobile broadband, enhanced wireless broadband;
URLLC: ultra-reliable low-latency communications, low latency, high reliability communications;
mMTC: massive machine type communications;
BWP: bandwidth Part, carrier Bandwidth Part;
GF: grant Free, schedule Free;
SS Block: synchronization signal block, synchronization block;
RMSI: remaining Minimum System Information, Minimum System Information;
MCS: modulation and coding scheme, Modulation coding level;
PDSCH: a Physical downlink shared channel, a downlink shared channel;
PDCCH: a Physical downlink control channel, a downlink control channel;
DCI: downlink control information, Downlink control information;
TCI: a Transmission Configuration Indicator for transmitting a Configuration indication;
HARQ: hybrid automatic repeat request, Hybrid repeat request;
QCL: quasi-colocation, Quasi co-location.
In the prior art, a non-orthogonal multiple access transmission technology is usually adopted, and a base station performs activation detection and data reception of users to ensure uplink multi-user transmission capability. However, the non-orthogonal multiple access transmission technique has the following disadvantages:
first, the receiver is highly complex. The non-orthogonal multiple access transmission technology needs to adopt a non-linear receiving algorithm, and along with the increase of modulation grade and multiplexing user data, the complexity of the algorithm increases exponentially;
second, reception performance is degraded. When the channel condition of the user is poor, the interference among multiple users is severe, which may affect the receiving performance of the uplink data.
In view of this, the present application provides a scheduling-free sending method and system for uplink multi BWP combination in 5G communication, which can reduce the probability of scheduling-free collision through the control of a base station; the joint scheduling-free transmission through multiple BWPs is beneficial to simplifying the complexity of the receiving end and simultaneously beneficial to improving the receiving performance of the receiving end.
The following detailed description is to be read in connection with the drawings and the detailed description.
Fig. 1 is a flowchart of an uplink multi-BWP joint non-scheduling transmission method in 5G communication according to an embodiment of the present application, and referring to fig. 1, a method for uplink multi-BWP joint non-scheduling transmission in 5G communication includes:
s01, configuring a plurality of BWPs for the terminal through high-level signaling, and configuring at least one group of scheduling-free resources on the BWPs respectively, wherein the scheduling-free resources corresponding to different BWPs adopt different MCS levels, different time-frequency resource lengths and different repetition factors;
s02, acquiring the number of the activated users on the non-scheduling resources corresponding to each BWP, and calculating the collision reference probability of the uplink resources according to the number of the non-scheduling resources corresponding to the BWPs and the number of the activated users on each non-scheduling resource;
s03, determining the BWP which is sent by the terminal without scheduling according to the collision reference probability, and taking the BWP as the BWP;
s04, scheduling-free sending of uplink resources is carried out on scheduling-free resources corresponding to the BWP;
s05, performing terminal activation detection and data reception on the non-scheduling resource corresponding to the non-scheduling sending BWP, and judging whether the uplink data is sent successfully, if the data is correctly received on the non-scheduling resource corresponding to at least one non-scheduling sending BWP, indicating that the uplink data is sent successfully; if the non-scheduling resource corresponding to each non-scheduling sending BWP does not receive data correctly, it indicates that the uplink data is not sent successfully.
Specifically, in the uplink multi-BWP joint non-scheduling transmission method in 5G communication provided by the present application, a plurality of BWPs are configured for the terminal through a high-level signaling in step S01, and at least one set of non-scheduling resources is configured on each of the BWPs; the number of the activated users on the non-scheduling resource corresponding to each BWP is obtained through step S02, and the collision reference probability of the uplink resource is calculated according to the number of the non-scheduling resources corresponding to the BWPs and the number of the activated users on each non-scheduling resource; in step S03, the terminal determines the BWP for the non-scheduling transmission according to the collision reference probability as the non-scheduling transmission BWP, and then determines the non-scheduling transmission of the non-scheduling resource uplink resource corresponding to the non-scheduling transmission BWP through S04. And finally, judging whether the uplink data is successfully transmitted or not through S05. When the terminal needs to send uplink data, it is not necessary to send a SR (scheduling request) and wait for the base station to send scheduling information, and data transmission is directly performed on the scheduling-free resources, thereby greatly reducing transmission delay. Meanwhile, in the uplink multi-BWP joint non-scheduling transmission method provided by the present application, the collision reference probability of the uplink resource can be calculated according to the number of non-scheduling resources corresponding to the multiple BWPs and the number of active users on the non-scheduling resources, and the non-scheduling resource of the BWP with the lower collision reference probability is selected to perform data transmission.
Optionally, in the step S02, the collision reference probability of the uplink resource is calculated according to the number of the non-scheduling resources corresponding to the BWPs and the number of the activated users on each non-scheduling resource, specifically (see fig. 2, where fig. 2 is a flowchart for calculating the collision reference probability of the uplink resource):
s11, calculating the total number N1 of the non-scheduling resources corresponding to a plurality of BWPs, wherein N1 is more than or equal to 1 and is a positive integer;
s12, calculating the total number N2 of the active users averaged to each time slot, wherein N2 is more than or equal to 1 and is a positive integer;
s13, calculating collision reference probability on each scheduling-free resource in each time slot according to the total number N1 of the scheduling-free resources corresponding to a plurality of BWPs and the total number N2 of the activated users averaged to each time slot, wherein N2/N1 is m + (N/N1), and N is more than or equal to 1 and less than N1; when m is 0, the collision reference probability on each scheduling-free resource is 0; when m is 1, the collision reference probability of the uplink resource corresponding to the N scheduling-free resources is N/N1.
Specifically, assuming that one scheduling-free resource is set for each BWP, the total number of the scheduling-free resources is 10, assuming that the total number of active users to each timeslot is 8 on average, when 8 active users are configured to different scheduling-free resources respectively, there is only one active user on each of the 8 scheduling-free resources, and therefore when the 8 users transmit uplink data, no collision occurs because the active users are set on different scheduling-free resources, at this time, the collision reference probability on each scheduling-free resource is 0, and the 8 scheduling-free resources are selected to transmit uplink data.
Assuming that two non-scheduled resources are set for each BWP, the total number of the non-scheduled resources is 12, assuming that the number of active users averaged to each timeslot is 16, after 12 users of the 16 users are evenly allocated to 12 non-scheduled resources, 4 users still need to be allocated to the non-scheduled resources, since each non-scheduled resource has been allocated to a user, when the remaining 4 users are allocated to the non-scheduled resources, there is a possibility that the 4 non-scheduled resources allocated to the 4 users will collide, and the probability of collision will be 4/12, that is, 33.3%.
Therefore, the method and the device calculate the collision reference probability of the uplink resource through the total number N1 of the scheduling-free resources corresponding to the BWPs and the total number N2 of the activated users averaged to each time slot, the calculation method is simple, and the accuracy of the calculation result obtained by calculating the collision probability by combining with the actual situation is higher.
Optionally, in the step S03, determining, according to the collision reference probability, a BWP for the terminal to perform the schedule-free transmission as the schedule-free transmission BWP, specifically (see fig. 3, and fig. 3 is a flowchart for selecting the schedule-free transmission BWP):
s21, sequencing the collision reference probabilities of the uplink resources corresponding to the scheduling-free resources according to the sequence from large to small or from small to large;
s23, selecting a critical reference probability from the collision reference probabilities;
s23, the BWP corresponding to the non-scheduling resource with the collision reference probability less than or equal to the critical reference probability is used as the non-scheduling sending BWP.
Specifically, assuming that the calculated collision reference probabilities of the uplink resources corresponding to the respective non-scheduled resources are 33%, 0, and 0, 0 may be selected as the threshold reference probability, and the BWP corresponding to the non-scheduled resource having the collision reference probability of 0 may be used as the non-scheduled transmission BWP, and the uplink data may be transmitted on the non-scheduled transmission resource of the non-scheduled transmission BWP. Assuming that the calculated collision reference probabilities of the uplink resources corresponding to the respective non-scheduled resources are 60%, 50%, 33%, 25%, and 25%, 33% may be used as the critical reference probability, the BWP corresponding to the non-scheduled resource having the collision reference probabilities of 33% and 25% may be used as the non-scheduled transmission BWP, and the uplink data may be transmitted on the non-scheduled transmission resource of the non-scheduled transmission BWP. The uplink data is sent on the scheduling-free sending BWP with lower collision reference probability, so that the probability of collision in the downlink transmission process of the uplink data is greatly reduced, and the reliability of the transmission of the uplink data on scheduling-free resources is improved.
Optionally, after the step S02 calculates the collision reference probability of the upstream resource according to the number of the non-scheduling resources corresponding to the BWPs and the number of the active users on each non-scheduling resource, the method further includes:
and updating the collision reference probability of the uplink resource corresponding to each scheduling-free resource periodically according to a preset period, and determining a new scheduling-free sending BWP according to the updated collision reference probability.
Specifically, considering that the total number of active users averaged to each time slot is not a fixed value, and the collision reference probability changes with the change of the total number of active users averaged to each time slot, the present application periodically updates the collision reference probability of the uplink resource corresponding to each non-scheduling resource according to a preset period, and determines a new scheduling-free transmission BWP according to the updated collision reference probability, so that the scheduling-free transmission BWP better conforms to the actual situation, which is more favorable for reducing the possibility of collision when the uplink resource transmits on the scheduling-free resource, and is more favorable for improving the reliability of the uplink resource scheduling-free transmission.
The uplink multi-BWP joint scheduling-free transmission method in 5G communication provided by the present invention will be further described with reference to specific examples.
Case one
Suppose an NR cell with a bandwidth of 100MHz, subcarrier spacing of 30KHz, and a full bandwidth of 273 PRB.
After the URLLC terminal accesses, the base station configures 3 activated uplink BWPs, which are BWP0, BWP1 and BWP2, respectively, for the terminal through high-level RRC signaling, and configures a non-scheduling resource on each uplink BWP, which is GF resource 1, GF resource 2 and GF resource 3, respectively, where the schematic diagrams of the BWPs and the non-scheduling resources are shown in fig. 4, and fig. 4 is a schematic diagram of configuration of a multi-BWP non-scheduling resource provided by the present application;
in the uplink time slot n, the terminal needs to send uplink data. The terminal simultaneously sends uplink PUSCH on the corresponding three scheduling-free resources according to the configuration of the base station;
the base station performs activation detection of the terminal at corresponding positions (namely, GF resources 1, GF resources 2 and GF resources 3), and performs demodulation and decoding of data.
Case two
On the basis of the above case one, it is assumed that the NR cell has a bandwidth of 100MHz, a subcarrier spacing of 30KHz, and a full bandwidth of 273 PRB.
After the URLLC terminal 1 is accessed, the base station configures 3 activated uplink BWPs, which are BWP0, BWP1 and BWP2, respectively, for the terminal through high-level RRC signaling, and configures a non-scheduling resource on each uplink BWP, which is GF resource 1, GF resource 2 and GF resource 3, respectively, and the schematic of the BWP and the non-scheduling resource continues as shown in fig. 4;
in the time slot m, the base station updates the scheduling-free resource of the terminal 1 according to the multiplexing user condition on the three scheduling-free resources, as shown in fig. 5, where fig. 5 is a schematic diagram after updating the scheduling-free resource configuration; the collision reference probability corresponding to the GF resource 3 is calculated to be greater than the collision reference probability corresponding to the GF resources 1 and 2, so that the GF resource 3 is updated to an invalid GF resource in fig. 5, and uplink data cannot be transmitted on the GF resource 3;
in the uplink time slot n, the terminal needs to send uplink data. The terminal simultaneously transmits an uplink PUSCH on two scheduling-free resources (namely, GF resource 1 and GF resource 2) shown in fig. 5 according to the configuration of the base station;
the base station performs activation detection of the terminal at the corresponding position ((i.e., GF resources 1 and GF resources 2), and performs demodulation and decoding of data.
According to the two cases, the uplink multi-BWP combined scheduling-free sending method in 5G communication provided by the application can reduce the probability of scheduling-free collision through the control of the base station; the reliability of uplink data transmission can be improved through the joint scheduling-free sending of a plurality of BWPs; moreover, the collision probability can be updated regularly by combining with the actual situation, so that the transmission reliability and the accuracy of the uplink data on the scheduling-free resources are further improved.
Based on the same inventive concept, the present application further provides an uplink multi BWP joint scheduling-free transmission system in 5G communication, including: a base station and a terminal;
the base station is used for configuring a plurality of BWPs for the terminal through high-level signaling and configuring at least one group of scheduling-free resources on the BWPs respectively, wherein the scheduling-free resources corresponding to different BWPs adopt different MCS levels, different time-frequency resource lengths and different repetition factors; the resource scheduling method is also used for acquiring the number of the activated users on the scheduling-free resources corresponding to each BWP, and calculating the collision reference probability of the uplink resources according to the number of the scheduling-free resources corresponding to the BWPs and the number of the activated users on each scheduling-free resource; determining BWP (scheduling-free transmission) of the terminal according to the collision reference probability, and taking the BWP as the BWP;
the terminal is used for simultaneously carrying out scheduling-free transmission of the uplink resource on the scheduling-free resource corresponding to the scheduling-free transmission BWP;
the base station is further configured to perform terminal activation detection and data reception on the non-scheduling resource corresponding to the non-scheduling transmission BWP, and determine whether the uplink data is successfully transmitted, where if the data is correctly received on the non-scheduling resource corresponding to the at least one non-scheduling transmission BWP, the uplink data is successfully transmitted; if the non-scheduling resource corresponding to each non-scheduling sending BWP does not receive data correctly, it indicates that the uplink data is not sent successfully.
Specifically, in the uplink multi-BWP combined non-scheduling transmission system in 5G communication provided by the present application, a base station configures a plurality of BWPs for a terminal through high-layer signaling, and configures at least one set of non-scheduling resources on the plurality of BWPs, respectively; the base station can also acquire the number of the activated users on the scheduling-free resources corresponding to each BWP, and calculate the collision reference probability of the uplink resources according to the number of the scheduling-free resources corresponding to the BWPs and the number of the activated users on each scheduling-free resource; and the base station determines the BWP which is sent by the terminal without scheduling according to the collision reference probability as the BWP which is sent without scheduling, and then the terminal sends the uplink resource without scheduling of the resource without scheduling corresponding to the BWP without scheduling. And finally, the base station judges whether the uplink data is successfully transmitted. When the terminal needs to send uplink data, it is not necessary to send a SR (scheduling request) and wait for the base station to send scheduling information, and data transmission is directly performed on the scheduling-free resources, thereby greatly reducing transmission delay. Meanwhile, in the uplink multi-BWP combined non-scheduling transmission system provided by the present application, the base station may calculate the collision reference probability of the uplink resource according to the number of non-scheduling resources corresponding to the multiple BWPs and the number of active users on the non-scheduling resources, and select the non-scheduling resource of the BWP with the lower collision reference probability to transmit data.
Optionally, in the uplink multi-BWP combined scheduling-free transmission system in 5G communication provided by the present application, the base station is further configured to:
calculating the total quantity N1 of the non-scheduling resources corresponding to a plurality of BWPs, wherein N1 is greater than or equal to 1 and is a positive integer;
calculating the total number of active users N2 averaged to each time slot, wherein N2 is greater than or equal to 1 and is a positive integer;
calculating collision reference probability on each scheduling-free resource in each time slot according to the total number N1 of the scheduling-free resources corresponding to the BWPs and the total number N2 of the activated users averaged to each time slot, wherein N2/N1 is m + (N/N1), and N is more than or equal to 1 and less than N1; when m is 0, the collision reference probability on each scheduling-free resource is 0; when m is 1, the collision reference probability of the uplink resource corresponding to the N scheduling-free resources is N/N1.
Specifically, assuming that one scheduling-free resource is set for each BWP, the total number of the scheduling-free resources is 10, assuming that the total number of active users to each timeslot is 8 on average, when 8 active users are configured to different scheduling-free resources respectively, there is only one active user on each of the 8 scheduling-free resources, and therefore when the 8 users transmit uplink data, no collision occurs because the active users are set on different scheduling-free resources, at this time, the collision reference probability on each scheduling-free resource is 0, and the 8 scheduling-free resources are selected to transmit uplink data.
Assuming that two non-scheduled resources are set for each BWP, the total number of the non-scheduled resources is 12, assuming that the number of active users averaged to each timeslot is 16, after 12 users of the 16 users are evenly allocated to 12 non-scheduled resources, 4 users still need to be allocated to the non-scheduled resources, since each non-scheduled resource has been allocated to a user, when the remaining 4 users are allocated to the non-scheduled resources, there is a possibility that the 4 non-scheduled resources allocated to the 4 users will collide, and the probability of collision will be 4/12, that is, 33.3%.
Therefore, the method and the device calculate the collision reference probability of the uplink resource through the total number N1 of the scheduling-free resources corresponding to the BWPs and the total number N2 of the activated users averaged to each time slot, the calculation method is simple, and the accuracy of the calculation result obtained by calculating the collision probability by combining with the actual situation is higher.
Optionally, in the uplink multi-BWP combined scheduling-free transmission system in 5G communication provided by the present application, the base station is further configured to:
sequencing the collision reference probabilities of the uplink resources corresponding to the scheduling-free resources according to the sequence from large to small or from small to large;
selecting a critical reference probability from the collision reference probabilities;
and taking the BWP corresponding to the non-scheduling resource with the collision reference probability less than or equal to the critical reference probability as the non-scheduling sending BWP.
Specifically, assuming that the calculated collision reference probabilities of the uplink resources corresponding to the respective non-scheduled resources are 33%, 0, and 0, 0 may be selected as the threshold reference probability, and the BWP corresponding to the non-scheduled resource having the collision reference probability of 0 may be used as the non-scheduled transmission BWP, and the uplink data may be transmitted on the non-scheduled transmission resource of the non-scheduled transmission BWP. Assuming that the calculated collision reference probabilities of the uplink resources corresponding to the respective non-scheduled resources are 60%, 50%, 33%, 25%, and 25%, 33% may be used as the critical reference probability, the BWP corresponding to the non-scheduled resource having the collision reference probabilities of 33% and 25% may be used as the non-scheduled transmission BWP, and the uplink data may be transmitted on the non-scheduled transmission resource of the non-scheduled transmission BWP. The uplink data is sent on the scheduling-free sending BWP with lower collision reference probability, so that the probability of collision in the downlink transmission process of the uplink data is greatly reduced, and the reliability of the transmission of the uplink data on scheduling-free resources is improved.
Optionally, in the uplink multi-BWP combined scheduling-free transmission system in 5G communication provided by the present application, the base station is further configured to: and updating the collision reference probability of the uplink resource corresponding to each scheduling-free resource periodically according to a preset period, and determining a new scheduling-free sending BWP according to the updated collision reference probability.
Specifically, considering that the total number of active users averaged to each time slot is not a fixed value, and the collision reference probability changes with the change of the total number of active users averaged to each time slot, the present application periodically updates the collision reference probability of the uplink resource corresponding to each non-scheduling resource according to a preset period, and determines a new scheduling-free transmission BWP according to the updated collision reference probability, so that the scheduling-free transmission BWP better conforms to the actual situation, which is more favorable for reducing the possibility of collision when the uplink resource transmits on the scheduling-free resource, and is more favorable for improving the reliability of the uplink resource scheduling-free transmission.
According to the embodiments, the application has the following beneficial effects:
in the uplink multi-BWP combined non-scheduling sending method and system in 5G communication provided by the application, a plurality of BWPs are configured for a terminal through a high-level signaling, and at least one group of non-scheduling resources are respectively configured on the BWPs; acquiring the number of activated users on scheduling-free resources corresponding to each BWP, and calculating the collision reference probability of uplink resources according to the number of the scheduling-free resources corresponding to a plurality of BWPs and the number of the activated users on each scheduling-free resource; and determining the BWP which is subjected to the non-scheduling transmission by the terminal according to the collision reference probability as the non-scheduling transmission BWP, and finally performing the non-scheduling transmission of the non-scheduling resource uplink resource corresponding to the non-scheduling transmission BWP. Therefore, the probability of scheduling-free collision can be reduced through the control of the base station, and the complexity of a receiving end is facilitated to be simplified through the combined scheduling-free transmission of a plurality of BWPs, and meanwhile, the receiving performance of the receiving end is facilitated to be improved.
The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.

Claims (8)

1. An uplink multi-BWP joint scheduling-free sending method in 5G communication, comprising:
configuring a plurality of BWPs for a terminal through a high-level signaling, and configuring at least one group of scheduling-free resources on the BWPs respectively, wherein the scheduling-free resources corresponding to different BWPs adopt different MCS levels, different time-frequency resource lengths and different repetition factors;
acquiring the number of activated users on scheduling-free resources corresponding to each BWP, and calculating the collision reference probability of uplink resources according to the number of the scheduling-free resources corresponding to a plurality of BWPs and the number of the activated users on each scheduling-free resource;
determining BWP (scheduling-free transmission) of the terminal according to the collision reference probability, and taking the BWP as the BWP;
scheduling-free sending of uplink resources is carried out simultaneously on scheduling-free resources corresponding to the scheduling-free sending BWP;
performing terminal activation detection and data reception on a non-scheduling resource corresponding to the non-scheduling transmission BWP, and judging whether uplink data is successfully transmitted, wherein if the data is correctly received on the non-scheduling resource corresponding to at least one non-scheduling transmission BWP, the uplink data is successfully transmitted; if the non-scheduling resource corresponding to each non-scheduling sending BWP does not receive data correctly, it indicates that the uplink data is not sent successfully.
2. The uplink multi-BWP joint non-scheduling transmission method in 5G communication according to claim 1, wherein the collision reference probability of the uplink resource is calculated according to the number of non-scheduling resources corresponding to multiple BWPs and the number of active users on each non-scheduling resource, specifically:
calculating the total quantity N1 of the non-scheduling resources corresponding to a plurality of BWPs, wherein N1 is greater than or equal to 1 and is a positive integer;
calculating the total number of active users N2 averaged to each time slot, wherein N2 is greater than or equal to 1 and is a positive integer;
calculating collision reference probability on each scheduling-free resource in each time slot according to the total number N1 of the scheduling-free resources corresponding to the BWPs and the total number N2 of the activated users averaged to each time slot, wherein N2/N1 is m + (N/N1), and N is more than or equal to 1 and less than N1; when m is 0, the collision reference probability on each scheduling-free resource is 0; when m is 1, the collision reference probability of the uplink resource corresponding to the N scheduling-free resources is N/N1.
3. The method according to claim 1, wherein the method for uplink multi-BWP joint non-scheduling transmission in 5G communication is characterized in that the BWP for the terminal to perform non-scheduling transmission is determined according to the collision reference probability, and is specifically:
sequencing the collision reference probabilities of the uplink resources corresponding to the scheduling-free resources according to the sequence from large to small or from small to large;
selecting a critical reference probability from the collision reference probabilities;
and taking the BWP corresponding to the non-scheduling resource with the collision reference probability less than or equal to the critical reference probability as the non-scheduling sending BWP.
4. The method of claim 2, wherein after calculating the collision reference probability of the uplink resource according to the number of non-scheduling resources corresponding to the BWPs and the number of active users on each non-scheduling resource, the method further comprises:
and updating the collision reference probability of the uplink resource corresponding to each scheduling-free resource periodically according to a preset period, and determining a new scheduling-free sending BWP according to the updated collision reference probability.
5. An uplink multi-BWP joint dispatch-free transmission system in 5G communication, comprising: a base station and a terminal;
the base station is used for configuring a plurality of BWPs for the terminal through high-level signaling, and respectively configuring at least one group of scheduling-free resources on the BWPs, wherein the scheduling-free resources corresponding to different BWPs adopt different MCS levels, different time-frequency resource lengths and different repetition factors; the resource scheduling method is also used for acquiring the number of the activated users on the scheduling-free resources corresponding to each BWP, and calculating the collision reference probability of the uplink resources according to the number of the scheduling-free resources corresponding to the BWPs and the number of the activated users on each scheduling-free resource; determining BWP (scheduling-free transmission) of the terminal according to the collision reference probability, and taking the BWP as the BWP;
the terminal is used for simultaneously carrying out scheduling-free transmission of uplink resources on scheduling-free resources corresponding to the scheduling-free transmission BWP;
the base station is further configured to perform terminal activation detection and data reception on a scheduling-free resource corresponding to the scheduling-free sending BWP, and determine whether uplink data is successfully sent, where if data is correctly received on the scheduling-free resource corresponding to at least one scheduling-free sending BWP, the base station indicates that the uplink data is successfully sent; if the non-scheduling resource corresponding to each non-scheduling sending BWP does not receive data correctly, it indicates that the uplink data is not sent successfully.
6. The system according to claim 5, wherein the base station is further configured to:
calculating the total quantity N1 of the non-scheduling resources corresponding to a plurality of BWPs, wherein N1 is greater than or equal to 1 and is a positive integer;
calculating the total number of active users N2 averaged to each time slot, wherein N2 is greater than or equal to 1 and is a positive integer;
calculating collision reference probability on each scheduling-free resource in each time slot according to the total number N1 of the scheduling-free resources corresponding to the BWPs and the total number N2 of the activated users averaged to each time slot, wherein N2/N1 is m + (N/N1), and N is more than or equal to 1 and less than N1; when m is 0, the collision reference probability on each scheduling-free resource is 0; when m is 1, the collision reference probability of the uplink resource corresponding to the N scheduling-free resources is N/N1.
7. The system according to claim 5, wherein the base station is further configured to:
sequencing the collision reference probabilities of the uplink resources corresponding to the scheduling-free resources according to the sequence from large to small or from small to large;
selecting a critical reference probability from the collision reference probabilities;
and taking the BWP corresponding to the non-scheduling resource with the collision reference probability less than or equal to the critical reference probability as the non-scheduling sending BWP.
8. The system according to claim 5, wherein the base station is further configured to:
and updating the collision reference probability of the uplink resource corresponding to each scheduling-free resource periodically according to a preset period, and determining a new scheduling-free sending BWP according to the updated collision reference probability.
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