CN111107629A - 5G communication method and system - Google Patents

5G communication method and system Download PDF

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Publication number
CN111107629A
CN111107629A CN201811253223.3A CN201811253223A CN111107629A CN 111107629 A CN111107629 A CN 111107629A CN 201811253223 A CN201811253223 A CN 201811253223A CN 111107629 A CN111107629 A CN 111107629A
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bwp
user equipment
bandwidth
dci format
format file
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CN201811253223.3A
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CN111107629B (en
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李郭周
姚舜
姬舒平
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ZTE Corp
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ZTE Corp
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    • 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
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The invention discloses a 5G communication method and a system, wherein the method comprises the following steps: acquiring the bandwidth requirement of user equipment; and obtaining a DCI format file of the network system; determining bwp allocated to the user equipment through the DCI format file according to the bandwidth requirement; allocating said determined bwp to the user equipment. According to the scheme, bwp is automatically and flexibly distributed to the user equipment according to the bandwidth requirement of the user equipment or the current time slot, so that the technical problems that network congestion is caused due to the fact that a plurality of user equipment simultaneously access a certain bwp, and the user equipment cannot experience the limit rate of the bandwidth exceeding any bwp can be effectively solved.

Description

5G communication method and system
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to a 5G communication method and system.
Background
With the development of network technology, 5G systems have come up, and the 5G system can configure a minimum bandwidth of 5MHz, and the maximum bandwidth can reach an NR cell of 400 MHz; based on the performance consideration of the user equipment, in the prior art scheme, not every user equipment supports and uses the bandwidth of 400MHZ, therefore, in order to improve the scheduling flexibility, bwp is introduced in the 3GPP protocol, and the network side divides the bandwidth supported by the whole 5G cell into a plurality of bwp, and provides network service for the user equipment through bwp.
In the prior art, once the NR cell is successfully configured, after the ue accesses the network, the BWP number, the subcarrier spacing (subcarrier spacing) and the cyclic prefix (cyclic prefix) are fixed, and when the NR cell is configured with multiple BWPs, only one of the cells BWP can be activated at the same time, so that the ue cannot experience the peak limit rate at any time; however, if only one NR cell is configured with bwp, the requirements of the user equipment cannot be met for different services and different scenarios.
In summary, there is no 5G communication method and system for flexibly scheduling and allocating bandwidth according to the requirement of the user equipment in the prior art.
Disclosure of Invention
The embodiment of the invention aims to provide a 5G communication method and a system, and solves the technical problem that the prior art lacks a 5G communication method and a system which can flexibly schedule and allocate bandwidth according to the requirements of user equipment.
To solve the above technical problem, the embodiment of the present invention is implemented as follows:
the 5G communication method provided by the embodiment of the invention is applied to a network side of a 5G communication system, wherein the method comprises the following steps:
acquiring the bandwidth requirement of user equipment; and obtaining a DCI format file of the network system;
determining bwp allocated to the user equipment through the DCI format file according to the bandwidth requirement;
allocating said determined bwp to the user equipment.
In an embodiment, the determining bwp allocated to the user equipment according to the bandwidth requirement and the DCI format file includes:
and calling an indication bit in the DCI format file, and determining bwp corresponding to the bandwidth requirement through the indication bit in the DCI format file according to the bandwidth requirement.
In an embodiment, the determining bwp allocated to the user equipment according to the bandwidth requirement and the DCI format file includes:
and if the utilization rate of bwp determined by the indicating bit in the DCI format file reaches the preset load, expanding the frequency range of bwp corresponding to the determined bandwidth requirement.
In an embodiment, the determining bwp allocated to the user equipment according to the bandwidth requirement and the DCI format file includes:
and if the current any bwp does not meet the bandwidth requirement of the user equipment as determined by the indicating bit of the DCI format file, re-allocating bwp to the user equipment according to the frequency range of the bandwidth requirement of the user equipment.
In one embodiment, the indication bit is set in the extended DCI format indication bit or in a newly added field of the DCI format file.
According to another 5G communication method provided by the embodiment of the present invention, the method is applied to a time period when the network access amount exceeds the preset access amount, and the method further includes:
acquiring a current time period; and a required bandwidth of the user equipment;
if the current time period is the network access amount centralized access time period, redistributing bwp the user equipment according to the priority of the user equipment;
selecting an activation bwp for the user device;
wherein the time period of the network access amount set is a time period when the user equipment accessing the network exceeds a preset value.
In one embodiment, said assigning bwp the user equipment according to the priority of the user equipment comprises:
dividing the bandwidth frequency of each bwp according to the required bandwidth of the user equipment;
calculating bwp a priority for each current user device;
user devices are assigned bwp according to each bwp priority for the current user device.
Wherein the current user equipment is the user equipment with the highest priority of the request allocation bwp.
In an embodiment, the allocating bwp to the user equipment according to the priority of each bwp to the current user equipment includes:
the bwp with the highest priority for the current user equipment is taken as the minimum bwp of the user equipment;
allocating four dedications bwp for the user equipment according to a bandwidth and frequency domain of a minimum bwp centered at the minimum bwp; where the bandwidth frequencies in the four dedicated bwp partially overlap.
In one embodiment, the selecting activation bwp for the user equipment specifically includes:
calculating the bandwidth required to be occupied by the user equipment in the current transmission time interval according to the channel quality mean value of the user equipment;
the user equipment is activated and notified of the dedicated bwp of the four dedicated bwp that is greater than the occupied bandwidth in the current transmission time interval and closest to the occupied bandwidth in the current transmission time interval.
According to the embodiment of the invention, the 5G communication system comprises:
the first acquisition module is used for acquiring the bandwidth requirement of the user equipment; and obtaining a DCI format file of the network system;
bwp, a determining module, configured to determine bwp allocated to the user equipment according to the bandwidth requirement and the DCI format file;
and the allocation module is used for allocating bwp to the user equipment according to the bandwidth requirement of the user equipment.
In one embodiment, further comprising:
the indication bit calling module is used for calling the indication bit in the DCI format file after the bandwidth requirement of the user equipment and the DCI format file are acquired by the acquisition module; wherein, the DCI format file comprises an indication bit;
the bwp determination module is specifically configured to:
and determining bwp corresponding to the bandwidth requirement through an indication bit in the DCI format file according to the bandwidth requirement.
In one embodiment, further comprising:
a first judgment module for judging bwp whether the utilization rate of bwp determined by the determination module has reached a preset load;
an adaptive adjustment module for expanding the determined bwp frequency range if the utilization of bwp determined by the bwp determination module has reached a preset compliance.
In one embodiment, further comprising:
an adaptive allocation module, configured to reallocate bwp for the user equipment according to the frequency range of the bandwidth requirement of the user equipment if the bwp determining module determines that bwp corresponding to the bandwidth requirement is not available.
In one embodiment, the DCI format file is further included, and the indication bit is arranged in the DCI format file;
the indication bit is set in the extended DCI format indication bit or in a newly added field of the DCI format file.
Another 5G communication system provided in an embodiment of the present invention is applied to a time slot with centralized network access amounts, and includes:
the second acquisition module is used for acquiring the current time period;
the processing module is used for allocating bwp to the user equipment according to the priority of the user equipment if the current time period is a network access amount centralized access time period;
an activation module to select activation bwp for the user device;
wherein the time period of the network access amount set is a time period when the user equipment accessing the network exceeds a preset value.
In one embodiment, the processing module includes:
a dividing unit, configured to divide the bandwidth frequency of each bwp according to the specified service type;
a priority determining unit for calculating bwp a priority of each user equipment for the current user equipment;
an allocation unit for allocating bwp to the user equipments according to each bwp priority for the current user equipment.
Wherein the current user equipment is the user equipment with the highest priority of the request allocation bwp.
In one embodiment, the allocation unit includes:
min bwp determining subunit for taking bwp with highest priority for the current user equipment as min bwp for the user equipment;
a dedicated bwp determining subunit for allocating four dedicated bwp for the user equipment according to a bandwidth and frequency domain of minimum bwp centered on the minimum bwp; where the bandwidth frequencies in the four dedicated bwp partially overlap.
In one embodiment, the activation module includes:
the calculating unit is used for calculating the bandwidth required to be occupied by the user equipment in the current transmission time interval according to the channel quality average value of the user equipment;
and an activating unit, configured to activate the dedicated bwp, which is greater than the occupied bandwidth in the current transmission time interval and closest to the occupied bandwidth in the current transmission time interval, of the four dedicated bwp, and notify the user equipment.
According to an embodiment of the present invention, there is provided a network device, including a memory, a processor, and a computer program that is executed on the memory and is executable on the processor, wherein the computer program implements the 5G communication method according to any one of claims 1 to 5 when executed by the processor.
According to an embodiment of the present invention, there is provided a computer-readable storage medium having a computer program stored thereon, where the computer program is executed by a processor to implement the 5G communication method applied to any one of the network sides.
According to an embodiment of the present invention, a network device includes a memory, a processor, and a computer program that is executed on the memory and is executable on the processor, and when the computer program is executed by the processor, the computer program implements any of the above 5G communication methods applied to a case where an access volume reaches a preset access volume.
A computer-readable storage medium, having stored thereon a computer program which, when executed by a processor, implements any of 5G communication methods applied when an access volume reaches a preset access volume.
According to the 5G communication method and the system provided by the embodiment of the invention, bwp is automatically and flexibly allocated to the user equipment by automatic adjustment according to the bandwidth requirement of the user equipment or the current time period, so that the technical problems that the network congestion is caused by the fact that a plurality of user equipment simultaneously access a certain bwp and the user equipment cannot experience the limit rate exceeding any bwp bandwidth can be effectively solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a flowchart of a 5G communication method according to an embodiment of the present invention;
fig. 2 is a flowchart of another 5G communication method according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of occupancy rate of bwp of an NR cell at time T1 in an embodiment of the present invention;
fig. 4 is a schematic structural diagram of occupancy rate bwp after flexible adjustment bwp according to bandwidth requirement of the ue in an embodiment of the present invention;
fig. 5 is a flowchart of another 5G communication method according to an embodiment of the present invention;
fig. 6 is a block diagram of a 5G communication system according to an embodiment of the present invention;
FIG. 7 is a block diagram of another 5G communication system in accordance with an embodiment of the present invention;
FIG. 8 is a block diagram of a network device in an embodiment of the invention;
fig. 9 is a block diagram of another network device according to an embodiment of the present invention.
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 some, not all, embodiments of the present invention. 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.
The embodiment of the invention provides a 5G method, which is applied to a network side in a 5G communication system and can comprise the following steps:
step S102, acquiring the bandwidth requirement of user equipment; and obtaining a DCI format file of the network system;
in the embodiment of the invention, different network requirements of the user equipment correspond to different bandwidth requirements, for example, the bandwidth requirement for watching the online video is higher than the bandwidth requirement for sending the text information to other user equipment through the instant messaging software. In the embodiment of the application, while or after the bandwidth requirement of the user equipment is acquired, the DCI format file of the network system is continuously acquired, and corresponding bwp (bandwidth part) is allocated to the user equipment according to the DCI format file in the network system.
Step S104, determining bwp allocated to the user equipment through the DCI format file according to the bandwidth requirement;
in the embodiment of the invention, the bwp determined to be allocated to the user equipment is based on the DCI format file in the 5G communication system, and other format files are not introduced, thereby effectively ensuring the complexity of the 5G communication system,
step S106, allocating the determined bwp to the user equipment.
In the embodiment of the invention, bwp allocated to the user equipment is allocated based on the requirement of the user equipment, so that the purpose of flexibly allocating bwp according to the requirement of the user can be effectively met.
In an embodiment of the present invention, the step S104 specifically includes:
and calling an indication bit in the DCI format file, and determining bwp corresponding to the bandwidth requirement through the indication bit in the DCI format file according to the bandwidth requirement.
In the embodiment of the present invention, bwp corresponding to the bandwidth requirement is determined by the indicator bit of the DCI format file, and a protocol file does not need to be added, and flexible allocation bwp for the user equipment is ensured.
In this embodiment of the present invention, the step S104 specifically includes:
and if the utilization rate of bwp determined by the indicating bit in the DCI format file reaches the preset load, expanding the frequency range of bwp corresponding to the determined bandwidth requirement.
In the embodiment of the present invention, when the utilization rate of bwp determined according to the indicator bit in the DCI format file has reached the preset load, the determined bwp is expanded to meet the bandwidth requirement of the user equipment, thereby effectively alleviating the technical problem of network congestion or congestion caused by flexibly adjusting the bandwidth range of bwp in the prior art.
As follows, a specific example is given for illustration:
the network side calculates the bandwidth utilization rate of each BWP by using a table according to the number of users and the service volume of each BWP on the network at a certain moment T1, and records idle and unused bandwidth; at the next time T2, if the bandwidth utilization of a certain BWP is overloaded or close to being overloaded, the network side may dynamically and temporarily expand the BWP through DCI, and dynamically schedule BWP with an idle bandwidth according to the table for maintaining and recording each BWP, so as to increase the wider scheduling bandwidth for these users.
In this embodiment of the present invention, the step S104 specifically includes:
and if the current any bwp does not meet the bandwidth requirement of the user equipment as determined by the indicating bit of the DCI format file, re-allocating bwp to the user equipment according to the frequency range of the bandwidth requirement of the user equipment.
In the embodiment of the present invention, if it is determined that any one bwp does not meet the bandwidth requirement of the user equipment currently through the indicator bit of the DCI format file of the network system, the user equipment is reallocated bwp according to the required range of the bandwidth frequency of the user equipment.
Such as: when the bandwidth required by a certain user equipment at a certain time is the full bandwidth of 400MHZ, after receiving the bandwidth requirement of the user equipment, the network side does not determine bwp meeting the bandwidth requirement of the user equipment through the indicator bit of the DCI format file, and then the network side flexibly adjusts according to the frequency requirement of the user equipment to allocate bwp of 400MHZ to the user equipment.
In the embodiment of the present invention, the indication bit is set in the extended DCI format indication bit or in a newly added field of the DCI format file.
In a 5G communication system, a DCI format file exists, and a format indicating bit is set in the DCI format file, but the indicating bit in the application can be set in the format indicating bit, and only the format indicating bit needs to be expanded; in addition, a field may be added to the DCI format file in the prior art, so that the indication bit in the embodiment of the present application is set in the added field and set independently from the format indication bit.
In the embodiment of the present invention, after receiving BWP allocated by the network side, the user equipment parses the PDCCH according to the existing search space to obtain a DCI format file, learns an instruction of the network side to adaptively adjust BWP through a newly added field or an extended existing field in the DCI, and sends or receives a corresponding PUSCH (Physical uplink Shared Channel) or PDSCH (Physical Downlink Shared Channel) at a specified position.
Two specific examples are set forth below:
detailed description of the preferred embodiment
For downlink traffic:
firstly, setting the bit number of a placement indication bit in a DCI format file, wherein the specific size is as follows:
Figure BDA0001842185070000081
bits, then, adopt
Figure BDA0001842185070000082
LSBs provide resource allocation.
For the uplink service:
firstly, setting the bit number of a placement indication bit in a DCI format file, wherein the specific size is as follows:
Figure BDA0001842185070000083
bits, then, adopt
Figure BDA0001842185070000084
LSBs provide resource allocation.
After the user equipment accesses the network, different bandwidth requirements are in different activated states bwp (active bwp); the network side periodically maintains a data table according to the number of online users and the traffic of each BWP, counts the bandwidth (bandwidth) utilization rate of each BWP, and can obtain the size of the idle bandwidth in real time.
If at a certain moment, the network side finds that the bandwidth utilization rate of a certain BWP reaches a preset value according to the maintained data table, and other BWPs have idle bandwidth, the network side temporarily and dynamically expands the scheduled bandwidth through the indication bit indication of DCI in the next scheduling period, and uses the indication bit to indicate that the bandwidth is scheduled
Figure BDA0001842185070000085
The LSB indicates a resource allocation of an enlarged bandwidth.
According to the configuration parameters in the prior art, after the user equipment analyzes the PDCCH to obtain the DCI format file, the starting position and the RB number of the bandwidth expanded for the DCI format file are known, and the PUSCH or PDSCH is correspondingly sent or received, so that the problem of delayed scheduling or non-scheduling caused by overload use of a certain BWP is solved, the resource utilization rate and the spectrum efficiency of a network side are improved, and meanwhile, the experience of a user is also improved.
Detailed description of the invention
A network side configures 4 BWPs in a certain NR cell, and periodically counts the bandwidth use state of each BWP; in the statistical period T1, the network side maintains a data table according to the presence of each BWP on the network user device and its required bandwidth, and calculates the bandwidth utilization of each BWP to obtain the size of the idle bandwidth in the period, as shown in fig. 3.
As the traffic volume of some users or a certain area becomes larger, at the time of the statistical period T2, the network side finds that the bandwidth usage of BWP2 has reached the pre-access amount according to the maintained data table, and BWP3 still has a large amount of unused bandwidth, then the network side informs the online users of BWP2 to use the partial bandwidth of BWP3 through a certain field in the DCI in the prior art, and temporarily expands the scheduling to meet the traffic volume of the users, as shown in fig. 4, so as to avoid the delayed scheduling or non-scheduling phenomenon of BWP2 on the online users.
The 5G communication method disclosed by the embodiment of the invention can flexibly adjust bwp according to the bandwidth required by the user equipment and allocate bwp to the user equipment, and the scheme can dynamically and flexibly adjust or allocate bwp according to the bandwidth required by the user equipment, thereby effectively overcoming the phenomenon of network congestion caused by centralized access of the user equipment in an NR cell to a certain bwp, and simultaneously effectively avoiding the technical problem that the bandwidth required by any bwp of bwp which is fixedly divided cannot meet the experience limit network speed of the certain user equipment.
Referring to fig. 5, an embodiment of the present invention discloses a 5G communication method, which is applied to a time period when a network access amount exceeds a preset access amount, and the method includes:
step S202, acquiring a current time period;
in the embodiment of the present invention, the current time period is the time period for the user to access the current bwp.
Step S204, if the current time period is the time period when the network access amount exceeds the preset access amount, redistributing bwp to the user equipment according to the priority of the user equipment;
in the embodiment of the invention, the division of the time period is preset in the network system, the division is classified and divided according to historical data, if a period of time is counted, the fact that the access amount of a certain area to a certain bwp in a 13:00-14:00 time period exceeds the preset access amount is found, and when the time period for acquiring the user equipment position bwp falls within the 13:00-14:00 time period, the acquired time period is the time period for which the network access amount exceeds the preset access amount.
If the obtained current time period is a time period when the access amount exceeds the preset access amount, the network side dynamically reallocates bwp the user equipment according to the priority of the user equipment.
Step S206, selecting activation bwp for the user equipment;
the time period of the network access amount set is the time period when the user equipment accessing the network exceeds the preset access amount.
In the embodiment of the present invention, after dynamically reassigning bwp the ue by the network side, activation bwp is selected, and in general, the network side assigns more than one, for example, four, dedications bwp to the ue, and when activation bwp is selected for the ue, a dedication bwp which is larger than the bandwidth requirement of the ue and is closest to the bandwidth requirement of the ue is selected and the dedication bwp is activated.
In the embodiment of the present invention, in step S204, the method specifically includes:
1) dividing the bandwidth frequency of each bwp according to the required bandwidth of the user equipment;
in embodiments of the present invention, the cell bandwidth BW may be increasedfullbandEqually dividing the sub-bands into N, and numbering all the sub-bands according to the frequency domain sequence 1,2subband＝BWfullbandN, a parameter named configuration number needs to be maintained on each subband: nrofConfignN, for counting the number of times each subband is configured as BWP. nrofConfignThe initial value is 0, and each time a sub-band is configured as the BWP of a certain UE, the configuration number of the sub-band is increased by one; and when the base station cancels the original BWP configuration of the UE, the configuration number of all related sub-bands is reduced by one.
2) Calculating bwp a priority for each current user device;
when there are multiple UEs needing to reconfigure BWP simultaneously, the base station configures BWP for each UE in turn according to the scheduling priority of the UE, and the scheduling priority of the UE is provided by a special prioritization module, which is not described in detail herein.
3) User devices are assigned bwp according to each bwp priority for the current user device.
Wherein the current user equipment is the user equipment with the highest priority of the request allocation bwp.
In the embodiment of the present invention, if the priority of a certain ue is the highest, the network side preferentially allocates bwp to the user ue, and if the priority of a certain ue is lower, the network side allocates bwp to the user ue later.
In the embodiment of the invention, the cell bandwidth occupied by the user equipment is estimated according to the current channel quality average value of the user equipment and the data scheduling amount in each basic scheduling time unit of the reallocation money, and the minimum bwp bandwidth required by allocating data resources for the current user equipment is calculated.
In this embodiment of the present invention, the method for assigning bwp to the ue according to the priority of each bwp to the current ue includes:
the bwp with the highest priority for the current user equipment is taken as the minimum bwp of the user equipment;
allocating four dedications bwp for the user equipment according to a bandwidth and frequency domain of a minimum bwp centered at the minimum bwp; where the bandwidth frequencies in the four dedicated bwp partially overlap.
Further, in the embodiment of the present invention, the selecting activation bwp for the user equipment specifically includes:
calculating the bandwidth required to be occupied by the user equipment in the current transmission time interval according to the channel quality mean value of the user equipment;
the user equipment is activated and notified of the dedicated bwp of the four dedicated bwp that is greater than the occupied bandwidth in the current transmission time interval and closest to the occupied bandwidth in the current transmission time interval.
Two specific examples are set forth below:
detailed description of the preferred embodiment
The NR cell is divided into 8 sub-bands which are numbered as 1,2,3,4,5,6,7 and 8 according to the frequency domain position sequence;
before bwp is reallocated to the user equipment, the minimum bwp of the user equipment occupies two sub-bands, namely a No. 2 self-band and a No. 3 self-band;
through statistics, the network side counts that the number of the user equipment of the service type A and the service demand are very large and exceed the load of the bandwidth of the BWP at the time of 11:30-13:30, and network congestion or scheduling delay is often caused, and the BWP can normally meet the on-network users and the service capacity thereof at other time periods.
The network side knows the rule, expands the bandwidth of the BWP according to time periods and reduces the bandwidth of other BWPs.
When the obtained time period is the time period, redistributing bwp to the user equipment, specifically:
1. obtaining UE maintained at current timekHistorical data scheduling volume
Figure BDA0001842185070000111
Maintenance on every TTI (Transmission time Interval) Using a smoothing method
Figure BDA0001842185070000112
Figure BDA0001842185070000113
Wherein
Figure BDA0001842185070000114
The amount of historical data modulation maintained for the previous transmission time interval,
Figure BDA0001842185070000115
the amount of historical data modulation, TbSize, maintained for the next TTInewFor the amount of data actually participating in the scheduling for the next transmission time interval, α is a smoothing factor.
2. Obtaining UE maintained at current timekScheduling data request volume
Figure BDA0001842185070000116
Maintenance on every TTI using a smoothing method
Figure BDA0001842185070000117
Figure BDA0001842185070000118
Wherein
Figure BDA0001842185070000119
Amount of scheduling data requests maintained for a previous TTI, wherein
Figure BDA00018421850700001110
Scheduling data request amount, BSR, maintained for the next TTInewFor the UE on the next TTIkβ is a smoothing factor.
3. Calculating a predicted value of data modulation amount tbsizeptti of the UE according to the following formulapredictAnd then combined with the SINRfullbandPredicting cell bandwidth BW (bandwidth Bandwidth) occupied by UE (user Equipment)predict。
Figure BDA0001842185070000121
Wherein
Figure BDA0001842185070000122
The amount of historical data scheduling within a unit scheduling unit,
Figure BDA0001842185070000123
scheduling request volumes, BSRs, for historical data of a UEpresentAnd scheduling the request quantity for the current data of the UE.
4. Calculating the minimum BWP bandwidth BW required for allocating data resources for the current UE according to the following formulaconfig. The BW assumed to be obtained in the present embodimentconfigIs equal to 4BWsubband。
Figure BDA0001842185070000124
When BW isconfig＞BWfullbandWhen, the BW is defaultedconfig＝BWfullband。
5. For the UEkA minimum BWP position candidate is generated. Known BWconfig＝4BWsubbandThe UE has a total of 5 BWP location candidates as shown in fig. 5;
6. calculating the selection priority PF of all sub-bands according to the formula in the step A611，PF2，PF3，PF4，PF5，PF6，PF7，PF8. The elected priority parameter of the BWP candidate is then calculated:
PFbwp_cand1＝PF1+PF2+PF3+PF4
PFbwp_cand2＝PF2+PF3+PF4+PF5
PFbwp_cand3＝PF3+PF4+PF5+PF6
PFbwp_cand4＝PF4+PF5+PF6+PF7
PFbwp_cand5＝PF5+PF6+PF7+PF8
suppose PF is among all candidatesbwp_cand4Is the highest, BWP candidate No. 4 is taken as UEkMinimum BWP configuration.
And 7.4 BWP candidate occupying sub-bands 4,5,6 and 7, updating the configuration number of each sub-band as follows:
nrofConfig4＝nrofConfig4+1
nrofConfig5＝nrofConfig5+1
nrofConfig6＝nrofConfig6+1
nrofConfig7＝nrofConfig7+1
nrofConfig2＝nrofConfig2-1
nrofConfig3＝nrofConfig3-1
the number of configurations of subband 1 and subband 8 is unchanged.
8. The remaining BWPs of the user equipment are configured.
The bandwidths of the remaining three BWPs are calculated by the following formula:
BWcomfig2＝min(2BWconfig,BWfullband,BWcap)
BWcomfig3＝min(3BWconfig,BWfullband,BWcap)
BWcomfig4＝min(4BWconfig,BWfullband,BWcap)
wherein BWcapMaximum bandwidth, BW, supported for UE capabilityconfig2Configuring a bandwidth, BW, for a second BWP of the current UEconfig3Configuring a bandwidth, BW, for a third BWP of the current UEconfig4And configuring the bandwidth for the fourth BWP of the current UE.
When there are multiple BWP configurations with the same bandwidth, only one BWP configuration with the same bandwidth is present by default, and the three BWPs are all configured with the minimum BWP position of the UE as the center, and may overlap each other during configuration.
After configuring bwp for the user equipment, the network side selects activation bwp.
Specific example 4:
assuming that before the user equipment is reconfigured BWP, the NR cell is divided into four descendants, numbered 1,2,3,4 according to the frequency domain position, and before BWP reconfiguration, the minimum BWP of the user equipment occupies two sub-bands, respectively No. 2 and No. 3 sub-bands;
the step of dynamically reconfiguring bwp the user equipment by the network side according to the priority of the user equipment specifically includes:
1. obtaining UE maintained at current timekHistorical data scheduling volume
Figure BDA0001842185070000136
Method maintenance using sliding window
Figure BDA0001842185070000131
Setting a time window with fixed window length, counting the data modulation amount of all TTIs in the time window from the current TTI on each TTI, and then obtaining the data modulation amount by a method of averaging but not limited to
Figure BDA0001842185070000132
2. Obtaining UE maintained at current timekScheduling data request volume
Figure BDA0001842185070000133
Method maintenance using sliding window
Figure BDA0001842185070000134
Setting a time window with fixed window length, counting data scheduling request quantity on all TTIs in the time window from the current TTI on each TTI, and then obtaining the data scheduling request quantity by a method of averaging but not limited to
Figure BDA0001842185070000135
3. Calculating the predicted value of data modulation amount TbSizePerTti of UE according to the formulapredictAnd then combined with the SINRfullbandPredicting cell bandwidth BW (bandwidth Bandwidth) occupied by UE (user Equipment)predict。
4. Calculating the minimum BWP bandwidth BW required for allocating data resources for the current UE according to the formulaconfig. The BW assumed to be obtained in the present embodimentconfigIs equal to BWsubband。
5. For the UEkA minimum BWP position candidate is generated. Known BWconfig＝BWsubbandThe UE has a total of 4 BWP location candidates as shown in fig. 6;
6. calculating the selection priority PF of all sub-bands according to the formula in the step A611，PF2，PF3，PF4. The elected priority parameter of the BWP candidate is then calculated:
PFbwp_cand1＝PF1
PFbwp_cand2＝PF2
PFbwp_cand3＝PF3
PFbwp_cand4＝PF4
suppose PF is among all candidatesbwp_cand3Is the highest, the BWP candidate No. 3 is taken as the UEkMinimum BWP configuration.
And 7.3, the BWP candidate occupies the sub-band 3, and the configuration number of the sub-band is updated as follows:
nrofConfig3＝nrofConfig3+1
nrofConfig2＝nrofConfig2-1
nrofConfig3＝nrofConfig3-1
the number of configurations of subband 1 and subband 4 is unchanged.
8. Configuring a UE with reference to the method of embodiment 3 abovekThe rest of the BWP.
According to the 5G communication method provided by the embodiment of the invention, bwp is reconfigured for the user equipment according to the obtained time period, and bwp can be overlapped.
Corresponding to the 5G communication method applied to the network side of the 5G communication system provided in the embodiment of the present invention, an embodiment of the present invention provides a 5G communication system, as shown in fig. 6, where the system includes:
a first obtaining module 62, configured to obtain a bandwidth requirement of a user equipment; and obtaining a DCI format file of the network system;
bwp, a determining module 64, configured to determine bwp allocated to the user equipment according to the bandwidth requirement and the DCI format file;
the allocating module 66 is configured to allocate bwp the user equipment according to the bandwidth requirement of the user equipment.
In one embodiment, the system further comprises:
the indication bit calling module is used for calling the indication bit in the DCI format file after the bandwidth requirement of the user equipment and the DCI format file are acquired by the acquisition module; wherein, the DCI format file comprises an indication bit;
the bwp determination module is specifically configured to:
and determining bwp corresponding to the bandwidth requirement through an indication bit in the DCI format file according to the bandwidth requirement.
In one embodiment, the system further comprises:
a first judgment module for judging bwp whether the utilization rate of bwp determined by the determination module has reached a preset load;
an adaptive adjustment module for expanding the determined bwp frequency range if the utilization of bwp determined by the bwp determination module has reached a preset compliance.
In one embodiment, the system further comprises:
an adaptive allocation module, configured to reallocate bwp for the user equipment according to the frequency range of the bandwidth requirement of the user equipment if the bwp determining module determines that bwp corresponding to the bandwidth requirement is not available.
In one embodiment, the system further comprises a DCI format file, the indication bit is disposed in the DCI format file;
the indication bit is set in the extended DCI format indication bit or in a newly added field of the DCI format file.
In the 5G communication system provided in the embodiment of the present invention, when the bwp determination module determines that the utilization rate of bwp, which is determined according to the indicator in the DCI format file, has reached the preset load, the determined bwp is expanded to meet the bandwidth requirement of the user equipment; the technical problem that the bandwidth range of bwp is flexibly adjusted in the prior art scheme, so that network congestion or congestion is caused is effectively solved; in addition, when any current bwp does not meet the bandwidth requirement of the user equipment, bwp is allocated to the user equipment again, so that the technical problem that the user equipment cannot experience the limited network speed is effectively solved.
Corresponding to the 5G communication method applied to the time period when the network access amount exceeds the preset access amount provided by the embodiment of the present invention, the embodiment of the present invention provides a 5G communication system, as shown in fig. 7, where the system includes:
a second obtaining module 72, configured to obtain a current time period;
a processing module 74, configured to allocate bwp to the user equipment according to the priority of the user equipment if the current time period is a network access amount centralized access time period;
an activation module 76 for selecting activation bwp for the user device;
wherein the time period of the network access amount set is a time period when the user equipment accessing the network exceeds a preset value.
In one embodiment, the processing module includes:
a dividing unit, configured to divide the bandwidth frequency of each bwp according to the specified service type;
a priority determining unit for calculating bwp a priority of each user equipment for the current user equipment;
an allocation unit for allocating bwp to the user equipments according to each bwp priority for the current user equipment.
Wherein the current user equipment is the user equipment with the highest priority of the request allocation bwp.
In one embodiment, the allocation unit includes:
min bwp determining subunit for taking bwp with highest priority for the current user equipment as min bwp for the user equipment;
a dedicated bwp determining subunit for allocating four dedicated bwp for the user equipment according to a bandwidth and frequency domain of minimum bwp centered on the minimum bwp; where the bandwidth frequencies in the four dedicated bwp partially overlap.
In one embodiment, the activation module includes:
the calculating unit is used for calculating the bandwidth required to be occupied by the user equipment in the current transmission time interval according to the channel quality average value of the user equipment;
and an activating unit, configured to activate the dedicated bwp, which is greater than the occupied bandwidth in the current transmission time interval and closest to the occupied bandwidth in the current transmission time interval, of the four dedicated bwp, and notify the user equipment.
In the 5G communication system provided in the embodiment of the present invention, the processing module reconfigures bwp the user equipment according to the time period acquired by the acquisition module, and bwp may overlap each other.
Corresponding to the 5G communication method and system applied to the network side provided by the embodiment of the present invention, the embodiment of the present invention provides a network device, and referring to fig. 8, the network device includes a processor 810, a transceiver 820, a memory 830, and a bus interface. Wherein:
in this embodiment of the present invention, the network device further includes: a computer program stored in the memory 830 and capable of running on the processor 810, where the computer program, when executed by the processor 810, implements each process in the method shown in fig. 1 or fig. 2, and can achieve the same technical effect, and is not described herein again to avoid repetition.
In FIG. 8, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 810, and various circuits, represented by memory 830, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 820 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium.
The processor 810 is responsible for managing the bus architecture and general processing, and the memory 830 may store data used by the processor 810 in performing operations.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the processes of the method embodiments, and can achieve the same technical effects, and in order to avoid repetition, the details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
Corresponding to the 5G communication method and system applied to the time period when the network access amount exceeds the preset access amount provided by the embodiment of the present invention, the embodiment of the present invention provides a network device, which is shown in fig. 9 and includes a processor 910, a transceiver 920, a memory 930, and a bus interface. Wherein:
in this embodiment of the present invention, the network device further includes: a computer program stored in the memory 930 and capable of running on the processor 910, where the computer program, when executed by the processor 910, implements each process in the method shown in fig. 5, and can achieve the same technical effect, and is not described herein again to avoid repetition.
In FIG. 9, the bus architecture may include any number of interconnected buses and bridges, with various circuits linking one or more processors, represented by processor 910, and memory, represented by memory 930. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 920 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium.
The processor 910 is responsible for managing the bus architecture and general processing, and the memory 930 may store data used by the processor 910 in performing operations.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process in fig. 5 in the foregoing method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (22)

1. A5G communication method is applied to a network side of a 5G communication system, and is characterized by comprising the following steps:
acquiring the bandwidth requirement of user equipment; and obtaining a DCI format file of the network system;
determining bwp allocated to the user equipment through the DCI format file according to the bandwidth requirement;
allocating said determined bwp to the user equipment.
2. The method of claim 1, wherein the determining bwp assigned to the user equipment according to the bandwidth requirement and the DCI format file comprises:
and calling an indication bit in the DCI format file, and determining bwp corresponding to the bandwidth requirement through the indication bit in the DCI format file according to the bandwidth requirement.
3. The method of claim 2, wherein the determining bwp assigned to the user equipment according to the bandwidth requirement and the DCI format file comprises:
and if the utilization rate of bwp determined by the indicating bit in the DCI format file reaches the preset load, expanding the frequency range of bwp corresponding to the determined bandwidth requirement.
4. The method of claim 2, wherein the determining bwp assigned to the user equipment according to the bandwidth requirement and the DCI format file comprises:
and if the current any bwp does not meet the bandwidth requirement of the user equipment as determined by the indicating bit of the DCI format file, re-allocating bwp to the user equipment according to the frequency range of the bandwidth requirement of the user equipment.
5. The method of claim 2, wherein the indication bit is set in an extended DCI format indication bit or in a newly added field of a DCI format file.
6. A5G communication method is applied to a time period when the network access amount exceeds a preset access amount, and is characterized by further comprising the following steps:
acquiring a current time period; and a required bandwidth of the user equipment;
if the current time period is the network access amount centralized access time period, redistributing bwp the user equipment according to the priority of the user equipment;
selecting an activation bwp for the user device;
wherein the time period of the network access amount set is a time period when the user equipment accessing the network exceeds a preset value.
7. The method of claim 6, wherein said assigning bwp the user equipment according to the priority of the user equipment comprises:
dividing the bandwidth frequency of each bwp according to the required bandwidth of the user equipment;
calculating bwp a priority for each current user device;
assigning bwp the user devices according to each bwp priority for the current user device;
wherein the current user equipment is the user equipment with the highest priority of the request allocation bwp.
8. The method of claim 7, wherein bwp is assigned to the UE according to each bwp priority of the current UE by:
the bwp with the highest priority for the current user equipment is taken as the minimum bwp of the user equipment;
allocating four dedications bwp for the user equipment according to a bandwidth and frequency domain of a minimum bwp centered at the minimum bwp; where the bandwidth frequencies in the four dedicated bwp partially overlap.
9. The method according to claim 8, wherein the selecting bwp an activation for the user equipment includes:
calculating the bandwidth required to be occupied by the user equipment in the current transmission time interval according to the channel quality mean value of the user equipment;
the user equipment is activated and notified of the dedicated bwp of the four dedicated bwp that is greater than the occupied bandwidth in the current transmission time interval and closest to the occupied bandwidth in the current transmission time interval.
10. A 5G communication system, comprising:
the first acquisition module is used for acquiring the bandwidth requirement of the user equipment; and obtaining a DCI format file of the network system;
bwp, a determining module, configured to determine bwp allocated to the user equipment according to the bandwidth requirement and the DCI format file;
and the allocation module is used for allocating bwp to the user equipment according to the bandwidth requirement of the user equipment.
11. The system of claim 10, further comprising:
the indication bit calling module is used for calling the indication bit in the DCI format file after the bandwidth requirement of the user equipment and the DCI format file are acquired by the acquisition module; wherein, the DCI format file comprises an indication bit;
the bwp determination module is specifically configured to:
and determining bwp corresponding to the bandwidth requirement through an indication bit in the DCI format file according to the bandwidth requirement.
12. The system of claim 11, further comprising:
a first judgment module for judging bwp whether the utilization rate of bwp determined by the determination module has reached a preset load;
an adaptive adjustment module for expanding the determined bwp frequency range if the utilization of bwp determined by the bwp determination module has reached a preset compliance.
13. The system of claim 11, further comprising:
an adaptive allocation module, configured to reallocate bwp for the user equipment according to the frequency range of the bandwidth requirement of the user equipment if the bwp determining module determines that bwp corresponding to the bandwidth requirement is not available.
14. The system of claim 11, further comprising a DCI format file, wherein the indicator bit is disposed in the DCI format file;
the indication bit is set in the extended DCI format indication bit or in a newly added field of the DCI format file.
15. A5G communication system applied to a time slot with concentrated network access amount, comprising:
the second acquisition module is used for acquiring the current time period;
a second processing module, configured to allocate bwp to the user equipment according to the priority of the user equipment if the current time period is a network access amount centralized access time period;
an activation module to select activation bwp for the user device;
wherein the time period of the network access amount set is a time period when the user equipment accessing the network exceeds a preset value.
16. The system of claim 15, wherein the second processing module comprises:
a dividing unit, configured to divide the bandwidth frequency of each bwp according to the specified service type;
a priority determining unit for calculating bwp a priority of each user equipment for the current user equipment;
an assigning unit for assigning bwp to the user equipments according to each bwp priority for the current user equipment;
wherein the current user equipment is the user equipment with the highest priority of the request allocation bwp.
17. The system of claim 16, wherein the distribution unit comprises:
min bwp determining subunit for taking bwp with highest priority for the current user equipment as min bwp for the user equipment;
a dedicated bwp determining subunit for allocating four dedicated bwp for the user equipment according to a bandwidth and frequency domain of minimum bwp centered on the minimum bwp; where the bandwidth frequencies in the four dedicated bwp partially overlap.
18. The system of claim 17, wherein the activation module comprises:
the calculating unit is used for calculating the bandwidth required to be occupied by the user equipment in the current transmission time interval according to the channel quality average value of the user equipment;
and an activating unit, configured to activate the dedicated bwp, which is greater than the occupied bandwidth in the current transmission time interval and closest to the occupied bandwidth in the current transmission time interval, of the four dedicated bwp, and notify the user equipment.
19. A network device comprising a memory, a processor, and a computer program on the memory and executable on the processor, the computer program when executed by the processor implementing the 5G communication method of any one of claims 1-5.
20. A network device comprising a memory, a processor, and a computer program running on the memory and executable on the processor, the computer program when executed by the processor implementing the 5G communication method of any one of claims 6-9.
21. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, implements the 5G communication method according to any one of claims 1 to 5.
22. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, implements the 5G communication method according to any one of claims 6 to 9.
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