CN111107629B - 5G communication method and system - Google Patents
5G communication method and system Download PDFInfo
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- CN111107629B CN111107629B CN201811253223.3A CN201811253223A CN111107629B CN 111107629 B CN111107629 B CN 111107629B CN 201811253223 A CN201811253223 A CN 201811253223A CN 111107629 B CN111107629 B CN 111107629B
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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
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
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- 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
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- 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; acquiring DCI format files of a network system; determining bwp allocated to the user equipment through the DCI format file according to the bandwidth requirement; the determined bwp is assigned to the user equipment. According to the scheme, according to the bandwidth requirement of the user equipment or the current time period, the allocation bwp of the user equipment is flexibly adjusted automatically, so that the technical problems that network congestion is caused by a plurality of user equipment accessing a certain bwp at the same time and the user equipment cannot experience the limit rate exceeding the bandwidth of any bwp can be effectively solved.
Description
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, a 5G system is generated, the 5G system can be configured with a minimum bandwidth of 5MHz, and a maximum bandwidth can reach an NR cell of 400 MHz; based on the performance of the ue, not every ue supports and uses 400MHZ bandwidth in the prior art, so in order to improve the scheduling flexibility, the 3GPP protocol introduces bwp, and the network side divides the bandwidth supported by the entire 5G cell into multiple bwp, and provides network services for the ue through bwp.
In the prior art, once the NR cell is configured successfully, the number of BWP, the subcarrier spacing (subcarrier spacing) and the cyclic prefix (cyclic prefix) are fixed after the ue accesses the network, and when the NR cell is configured with a plurality of BWP, only one BWP can be activated based on the same time, so that the ue cannot experience the limiting peak rate whenever; however, if only one bwp is configured for one NR cell, the requirements of the user equipment cannot be satisfied for different services and different scenarios.
In summary, the prior art solution lacks a 5G communication method and system capable of flexibly scheduling allocation bandwidth according to the requirements of the ue.
Disclosure of Invention
The embodiment of the invention aims to provide a 5G communication method and a 5G communication system, which are used for solving the technical problem that the prior art lacks a 5G communication method and a 5G communication system which can flexibly schedule and allocate bandwidth according to the requirements of user equipment.
In order to solve the technical problems, the embodiment of the invention is realized 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; acquiring DCI format files of a network system;
determining bwp allocated to the user equipment through the DCI format file according to the bandwidth requirement;
the determined bwp is assigned to the user equipment.
In one 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 according to the bandwidth requirement through the indication bit in the DCI format file.
In one 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 indication bit in the DCI format file reaches a preset load, expanding the frequency range of bwp corresponding to the determined bandwidth requirement.
In one embodiment, the determining bwp allocated to the user equipment according to the bandwidth requirement and the DCI format file includes:
if it is determined by the indication bit of the DCI format file that any one bwp does not meet the bandwidth requirement of the user equipment, reallocating 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 an extended DCI format indication bit or in a newly added field of a DCI format file.
According to another 5G communication method provided by the embodiment of the present invention, the method is applied to a period when a network access amount exceeds a preset access amount, and the method further includes:
acquiring a current time period; the required bandwidth of the user equipment;
if the current time period is the network access amount centralized access time period, reallocating bwp to the user equipment according to the priority of the user equipment;
selecting an activation bwp for the user device;
wherein the time period in the network access amount set is a time period in which the user equipment accessing the network exceeds a predetermined value.
In one embodiment, the allocating bwp to the user equipment according to the priority of the user equipment includes:
dividing the bandwidth frequency of each bwp according to the required bandwidth of the user equipment;
calculating a priority of each bwp for the current user equipment;
the user equipment is assigned bwp according to the priority of each bwp to the current user equipment.
Wherein the current ue is the highest priority ue requesting allocation bwp.
In one embodiment, the user equipment is allocated bwp according to the priority of each bwp to the current user equipment, which specifically includes:
the highest bwp of the priority for the current user equipment is taken as the smallest bwp of the user equipment;
four special bwp are distributed to the user equipment according to the bandwidth and the frequency domain of the minimum bwp by taking the minimum bwp as the center; wherein the bandwidth frequencies in the four dedicated bwp partially overlap.
In one embodiment, the selecting for the user equipment to activate bwp specifically includes:
calculating the bandwidth to be occupied by the user equipment in the current transmission time interval according to the channel quality average value of the user equipment;
the dedicated bwp of the four dedicated bwp, which is larger than the bandwidth to be occupied in the current transmission time interval and is closest to the bandwidth to be occupied in the current transmission time interval, is activated and notified to the user equipment.
According to an embodiment of the present invention, a 5G communication system includes:
the first acquisition module is used for acquiring the bandwidth requirement of the user equipment; acquiring DCI format files of a network system;
bwp 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 indication bits in the DCI format file after the acquisition module acquires the bandwidth requirement of the user equipment and the DCI format file; wherein, the DCI format file comprises an indication bit;
the bwp determining module is specifically configured to:
and according to the bandwidth requirement, determining bwp corresponding to the bandwidth requirement through an indication bit in the DCI format file.
In one embodiment, further comprising:
a first judging module, configured to judge bwp whether the utilization rate of bwp determined by the determining module has reached a preset load;
and the self-adaptive adjustment module is used for expanding the frequency range of the determined bwp if the utilization rate of bwp determined by the bwp determination module reaches the preset coincidence.
In one embodiment, further comprising:
and the adaptive allocation module is configured to reallocate bwp the ue according to the frequency range of the bandwidth requirement of the ue if the bwp determination module determines that bwp corresponding to the bandwidth requirement is not available.
In one embodiment, the method further comprises a DCI format file, wherein the indication bit is arranged in the DCI format file;
wherein 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 embodiment of the present invention, a 5G communication system is applied to a period of time in which network access is concentrated, and includes:
the second acquisition module is used for acquiring the current time period;
the processing module is 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 volume centralized access time period;
an activation module for selecting an activation bwp for the user device;
wherein the time period in the network access amount set is a time period in which the user equipment accessing the network exceeds a predetermined value.
In one embodiment, the processing module comprises:
a dividing unit for dividing the bandwidth frequency of each bwp by the specified service type;
a priority determining unit for calculating a priority of each bwp for the current user equipment;
an allocation unit for allocating bwp to the user equipments according to the priority of each bwp to the current user equipment.
Wherein the current ue is the highest priority ue requesting allocation bwp.
In one embodiment, the dispensing unit comprises:
the minimum bwp determines the subunit for taking bwp with the highest priority for the current user equipment as the minimum bwp of the user equipment;
a special bwp determining subunit, configured to allocate four special bwp for the user equipment based on the bandwidth and the frequency domain of the minimum bwp, centering on the minimum bwp; wherein the bandwidth frequencies in the four dedicated bwp partially overlap.
In one embodiment, the activation module includes:
a calculating unit, configured to calculate, according to a channel quality average value of the user equipment, a bandwidth to be occupied by the user equipment in a current transmission time interval;
and the activating unit is used for activating the special bwp which is larger than the bandwidth to be occupied in the current transmission time interval and is closest to the bandwidth to be occupied in the current transmission time interval in the four special bwp and notifying the special bwp to 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 on the memory and executable on the processor, the computer program implementing 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, a computer readable storage medium is provided, and a computer program is stored on the computer readable storage medium, 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 the embodiment of the invention, the network equipment comprises a memory, a processor and a computer program which is arranged on the memory and can run on the processor, wherein the computer program realizes the 5G communication method when any one of the above is applied to the access quantity reaching the preset access quantity when the computer program is executed by the processor.
A computer readable storage medium, wherein a computer program is stored on the computer readable storage medium, the computer program when executed by a processor implementing any one of the 5G communication methods applied when an access amount reaches a preset access amount.
According to the 5G communication method and system provided by the embodiment of the invention, the allocation bwp of the user equipment is automatically and flexibly adjusted according to the bandwidth requirement of the user equipment or the current time period, so that the technical problems that network congestion is caused by that a plurality of user equipment access a certain bwp at the same time and the user equipment cannot experience the limit rate exceeding the bandwidth of any bwp 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 do not constitute a limitation on 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 flow chart of a further 5G communication method according to an embodiment of the invention;
fig. 3 is a schematic structural diagram of an occupancy of bwp of an NR cell at time T1 according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of the occupancy rate of bwp after the flexible adjustment bwp according to the bandwidth requirement of the ue according to an embodiment of the present invention;
FIG. 5 is a flow chart of yet 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 yet another 5G communication system according to an embodiment of the present invention;
fig. 8 is a block diagram of a network device according to an embodiment of the present invention;
fig. 9 is a block diagram of still another network device according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention provides a 5G method which is applied to a network side in a 5G communication system, and the method can comprise the following steps:
step S102, obtaining the bandwidth requirement of user equipment; acquiring DCI format files of a network system;
in the embodiment of the invention, different network requirements of the user equipment correspond to different bandwidth requirements, for example, the bandwidth requirements required for watching the online video are higher than those required for sending text information to other user equipment through the instant messaging software. In the embodiment of the present application, when or after obtaining the bandwidth requirement of the user equipment, the DCI format file of the network system is continuously obtained, and according to the DCI format file in the network system, a corresponding bwp (bandwidth part) is allocated to the user equipment.
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, bwp allocated to the user equipment is determined based on the DCI format file in the 5G communication system, and other format files are not introduced, thereby effectively guaranteeing the complexity of the 5G communication system,
and step S106, distributing 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 flexible allocation bwp according to the requirement of the user can be effectively met.
In one 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 according to the bandwidth requirement through the indication bit in the DCI format file.
In the embodiment of the invention, the bwp corresponding to the bandwidth requirement is determined by the indication bit of the DCI format file, a protocol file is not required to be added, and flexible allocation bwp for the user equipment is ensured.
In the embodiment of the present invention, the step S104 specifically includes:
and if the utilization rate of bwp determined by the indication bit in the DCI format file reaches a preset load, expanding the frequency range of bwp corresponding to the determined bandwidth requirement.
In the embodiment of the invention, when the utilization rate of bwp determined according to the indication bit in the DCI format file reaches the preset load, the determined bwp is enlarged to meet the bandwidth requirement of the user equipment, so that the technical problem of network blocking or congestion caused by flexibly adjusting the bandwidth range of bwp in the prior art scheme is effectively solved.
The following is set forth by way of a specific example:
according to a certain moment T1, the network side uses a table to count the bandwidth utilization rate of each BWP on the BWP according to the number of users and the traffic of each BWP on the network, and records the unused bandwidth; at the next time T2, if a certain BWP bandwidth utilization is overloaded or is close to overload, the network side may dynamically and temporarily enlarge the BWP through DCI, and dynamically schedule BWP with idle bandwidth according to the table of maintaining and recording each BWP, so that the users improve the wider scheduling bandwidth.
In the embodiment of the present invention, the step S104 specifically includes:
if it is determined by the indication bit of the DCI format file that any one bwp does not meet the bandwidth requirement of the user equipment, reallocating 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 at present through the indication bit of the DCI format file of the network system, the bwp is reallocated to the user equipment according to the bandwidth frequency requirement range of the user equipment.
Such as: when a certain user equipment needs to have a full bandwidth of 400MHz at a certain moment due to a certain requirement, 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 indication bit of the DCI format file, and the network side flexibly adjusts bwp of 400MHz according to the frequency requirement of 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 indication bit is arranged in the DCI format file, wherein the indication bit in the application can be arranged in the format indication bit, and only the format indication bit needs to be expanded; in addition, a field may be added to the DCI format file in the prior art, so that the indicator bit in the embodiment of the present application is set in the added field, so as to be set independently from the format indicator bit.
In the embodiment of the present invention, after receiving BWP allocated by the network side, the user equipment analyzes the PDCCH according to the existing search space to obtain the DCI format file, and knows that the network side adaptively adjusts the BWP indication by adding a new field or expanding the existing field in the DCI, and sends or receives the corresponding PUSCH (Physical Uplink Shared Channel ) or PDSCH (Physical Downlink Shared Channel, physical downlink shared channel) at the specified position.
The following are illustrative of two specific examples:
detailed description of the preferred embodiments
For downlink traffic:
firstly, setting bit numbers for placing indication bits in a DCI format file, wherein the specific size is as follows:
bits, then, use +.>
The LSBs provide resource allocation.
For uplink traffic:
firstly, setting bit numbers for placing indication bits in a DCI format file, wherein the specific size is as follows:
bits, then, use +.>
The LSBs provide resource allocation.
After the ue accesses the network, different bandwidth requirements may be in different active states BWP (active BWP); the network side periodically maintains a data table according to the number of users and the traffic of each BWP on the network, and counts the bandwidth utilization rate of each BWP, so that the size of the idle bandwidth can be obtained 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 bandwidths, the network side is communicated in the next scheduling periodIndication bit over DCI indicates temporarily dynamically expanding scheduled bandwidth, use
The LSB indicates a resource allocation that expands bandwidth.
After the user equipment analyzes the PDCCH to obtain the DCI format file according to the configuration parameters in the prior art, the starting position and the RB number of the bandwidth which is enlarged for the DCI format file are known, and the PUSCH or the PDSCH is correspondingly transmitted or received, so that the problem of delayed scheduling or non-scheduling caused by overload use of a certain BWP is avoided, the resource utilization rate and the frequency spectrum efficiency of a network side are improved, and the experience of a user is also improved.
Second embodiment
The network side configures 4 BWPs in a certain NR cell, and periodically counts the bandwidth use state of each BWP; in the statistics period T1, the network side maintains a data table according to each BWP on-network user equipment and its required bandwidth, and counts 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 statistics period T2, the network side discovers that the bandwidth usage condition of BWP2 reaches the pre-access volume according to the maintained data table, while BWP3 still has a large amount of unused bandwidth, so that the network side informs the network user of BWP2 to use a part of the bandwidth of BWP3 through a certain field in the DCI of the prior art, and temporarily expands the scheduling to meet the traffic volume of the user, as shown in fig. 4, so as to avoid the phenomenon of delayed scheduling or non-scheduling of BWP2 in the network user.
According to the 5G communication method disclosed by the embodiment of the invention, bwp can be flexibly adjusted according to the bandwidth requirement of the user equipment, bwp is allocated to the user equipment, bwp can be dynamically and flexibly adjusted or allocated according to the bandwidth requirement of the user equipment, the phenomenon that network congestion is caused by concentrated access to a certain bwp by the user equipment of an NR cell can be effectively overcome, and meanwhile, the technical problem that the bandwidth requirement of any bwp of the fixedly divided bwp does not meet the experience limit network speed of a certain user equipment can be effectively avoided.
Referring to fig. 5, an embodiment of the present invention discloses a 5G communication method applied to a period when a network access amount exceeds a preset access amount, the method including:
step S202, acquiring a current time period;
in the embodiment of the present invention, the current time period is the time period when the user accesses the current bwp.
Step S204, if the current time period is a time period when the network access amount exceeds the preset access amount, reallocating bwp to the user equipment according to the priority of the user equipment;
in the embodiment of the present invention, a time period is preset in a network system, where the time period is classified and divided according to historical data, for example, statistics of a period of time passes, and if it is found that an access amount of a certain area to a certain bwp exceeds a preset access amount in a 13:00-14:00 time period, when the obtained time period of the user equipment azimuth bwp falls in the 13:00-14:00 time period, the obtained time period is a time period when 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 to the user equipment according to the priority of the user equipment.
Step S206, selecting and activating bwp for the user equipment;
the time period in which the network access amount is concentrated is a time period in which the user equipment accessing the network exceeds a preset access amount.
In the embodiment of the present invention, after the network side dynamically reallocates bwp to the ue, it selects to activate bwp, typically, the network side allocates more than one dedicated bwp, such as four dedicated bwp, to the ue, and selects and activates bwp dedicated bwp that is greater than the bandwidth requirement of the ue and closest to the bandwidth requirement of the ue, and activates the dedicated bwp.
In the embodiment of the present invention, in step S204, specifically includes:
1) Dividing the bandwidth frequency of each bwp according to the required bandwidth of the user equipment;
in an embodiment of the present invention, in the present invention,cell bandwidth BW fullband Equally dividing into N sub-bands, numbering all sub-bands in frequency domain order 1,2,..n, where each sub-band bandwidth is BW subband ＝BW fullband Per subband, a parameter called configuration number needs to be maintained: nrofConfig n N=1,..n, for counting the number of times each subband is configured as BWP. nrofConfig n The initial value is 0, and each time a subband is configured as BWP of a certain UE, the configuration number of the subband is increased by one; when the base station cancels the original BWP configuration of the UE, the configuration number of all relevant sub-bands is reduced by one.
2) Calculating a priority of each bwp for the current user equipment;
when there are multiple UEs that need to reconfigure BWP at the same time, the base station configures BWP for each UE in turn according to the scheduling priority of the UEs, which is provided by a special prioritization module, not described in detail here.
3) The user equipment is assigned bwp according to the priority of each bwp to the current user equipment.
Wherein the current ue is the highest priority ue requesting allocation bwp.
In the embodiment of the present invention, if the priority of a certain ue is highest, the network side preferentially allocates bwp to the user equipment, and if the priority of a certain ue is lower, the network side allocates bwp to the user equipment more later.
In the embodiment of the invention, the cell bandwidth required to be occupied by the user equipment is estimated according to the current channel quality average value and the data scheduling amount in each basic scheduling time unit of the user equipment, and the minimum bwp bandwidth required by distributing data resources for the current user equipment is calculated.
In the embodiment of the present invention, the method allocates bwp to the user equipment according to the priority of each bwp to the current user equipment, which specifically includes:
the highest bwp of the priority for the current user equipment is taken as the smallest bwp of the user equipment;
four special bwp are distributed to the user equipment according to the bandwidth and the frequency domain of the minimum bwp by taking the minimum bwp as the center; wherein the bandwidth frequencies in the four dedicated bwp partially overlap.
Further, in an embodiment of the present invention, the selecting an activation bwp for a user equipment specifically includes:
calculating the bandwidth to be occupied by the user equipment in the current transmission time interval according to the channel quality average value of the user equipment;
the dedicated bwp of the four dedicated bwp, which is larger than the bandwidth to be occupied in the current transmission time interval and is closest to the bandwidth to be occupied in the current transmission time interval, is activated and notified to the user equipment.
The following are illustrative of two specific examples:
detailed description of the preferred embodiments
The NR cell is divided into 8 sub-bands, and the numbers are 1,2,3,4,5,6,7 and 8 respectively according to the frequency domain position sequence;
before the bwp is redistributed to the user equipment, the minimum bwp of the user equipment occupies two sub-bands, namely a number 2 self-band and a number 3 self-band;
through statistics, the network side counts that the number of user equipment and the service demand of the service type A are very large in 11:30-13:30, the load of the BWP bandwidth is exceeded, network congestion or scheduling delay is often caused, and the BWP can normally meet the requirements of the on-line users and the service capacity of the on-line users in other time periods.
The network side knows the rule, expands the bandwidth of the BWP according to the time period, and reduces the bandwidth of other BWPs.
When the acquired time period is the time period, reallocating bwp to the user equipment, wherein the specific method comprises the following steps:
1. acquiring UE maintained at current moment k Historical data scheduling amount
Maintenance per TTI (transmission time interval) using a smoothing method
Wherein the method comprises the steps of
The amount of historical data modulation maintained for the previous transmission time interval,
the amount of historical data modulation maintained for the next TTI, tbSize new The amount of data actually involved in scheduling for the latter transmission time interval, α, is a smoothing factor.
2. Acquiring UE maintained at current moment k Scheduling data request amount
Maintenance per TTI using smoothing methods
Wherein the method comprises the steps of
A scheduling data request amount maintained for a previous TTI, wherein +.>
Scheduling data request amount, BSR, maintained for the next TTI new For the UE on the latter TTI k Beta is a smoothing factor.
3. Calculating a data tone quantity predicted value TbSizePerTti of the UE according to the following formula predict Then combine SINR fullband Estimating the occupation of UECell bandwidth BW predict 。
Wherein the method comprises the steps of
For the historical data scheduling amount within a unit scheduling unit,/->
Scheduling request amount for historical data of UE, BSR present And scheduling the request quantity for the current data of the UE.
4. The minimum BWP bandwidth BW required for allocating data resources for the current UE is calculated according to the following formula config . The BW obtained is assumed in the present embodiment config Equal to 4BW subband 。
When BW is config ＞BW fullband Default BW when config ＝BW fullband 。
5. For UE k A minimum BWP position candidate is generated. Known BW config ＝4BW subband The UE has a total of 5 BWP position candidates as shown in fig. 5;
6. calculating the selection priority PF of all sub-bands according to the formula in the step A61 1 ，PF 2 ，PF 3 ，PF 4 ，PF 5 ，PF 6 ，PF 7 ，PF 8 . Then calculating the selection priority parameter of BWP candidates:
PF bwp_cand1 ＝PF 1 +PF 2 +PF 3 +PF 4
PF bwp_cand2 ＝PF 2 +PF 3 +PF 4 +PF 5
PF bwp_cand3 ＝PF 3 +PF 4 +PF 5 +PF 6
PF bwp_cand4 ＝PF 4 +PF 5 +PF 6 +PF 7
PF bwp_cand5 ＝PF 5 +PF 6 +PF 7 +PF 8
assume PF in all candidates bwp_cand4 If the value of BWP candidate number 4 is highest as UE k Is a minimum BWP configuration of (a).
The BWP candidate No. 7.4 occupies subbands 4,5,6,7, and the number of configurations per subband is updated as follows:
nrofConfig 4 ＝nrofConfig 4 +1
nrofConfig 5 ＝nrofConfig 5 +1
nrofConfig 6 ＝nrofConfig 6 +1
nrofConfig 7 ＝nrofConfig 7 +1
nrofConfig 2 ＝nrofConfig 2 -1
nrofConfig 3 ＝nrofConfig 3 -1
the number of configurations of subband 1 and subband 8 is unchanged.
8. The remaining BWP of the user equipment is configured.
The bandwidths of the remaining three BWP are calculated by the following formula:
BW comfig2 ＝min(2BW config ,BW fullband ,BW cap )
BW comfig3 ＝min(3BW config ,BW fullband ,BW cap )
BW comfig4 ＝min(4BW config ,BW fullband ,BW cap )
wherein BW is cap Maximum bandwidth, BW, supported for UE capability config2 Configuring bandwidth, BW, for the second BWP of the current UE config3 Configuring bandwidth, BW, for the third BWP of the current UE config4 The bandwidth is configured for the fourth BWP of the current UE.
When there are multiple BWP configuration bandwidths that are the same, only one BWP configuration with the same bandwidth default exists, and all the three BWP configurations are configured with the minimum BWP position of the UE as the center, and may overlap each other when configured.
After configuring bwp the user equipment, the network side selects to activate bwp.
Example 4
Assuming that before the user equipment is reconfigured BWP, the NR cell is divided into four sub-bands, which are 1,2,3, and 4 according to the frequency domain position numbers, and before BWP reconfiguration, the minimum BWP of the user equipment occupies two sub-bands, which are sub-bands No. 2 and No. 3, respectively;
the step of dynamically reconfiguring bwp the user equipment by the network side according to the priority of the user equipment specifically includes:
1. acquiring UE maintained at current moment k Historical data scheduling amount
Method maintenance using sliding window
Setting a time window with fixed window length, counting the data modulation amount on all TTIs in the time window up to the current TTI on each TTI, and obtaining +.>
2. Acquiring UE maintained at current moment k Scheduling data request amount
Method maintenance using sliding window
Setting a time window with fixed window length, counting the data scheduling request quantity on all TTIs in the time window reaching the current TTI on each TTI, and obtaining +.>
3. Calculating a data tone quantity predicted value TbSizePerTti of the UE according to the formula predict Then combine SINR fullband Estimating cell bandwidth BW needed to be occupied by UE predict 。
4. Calculating minimum BWP bandwidth BW required for allocating data resources for current UE according to the formula config . The BW obtained is assumed in the present embodiment config Equal to BW subband 。
5. For UE k A minimum BWP position candidate is generated. Known BW config ＝BW subband The UE has a total of 4 BWP position candidates as shown in fig. 6;
6. calculating the selection priority PF of all sub-bands according to the formula in the step A61 1 ，PF 2 ，PF 3 ，PF 4 . Then calculating the selection priority parameter of BWP candidates:
PF bwp_cand1 ＝PF 1
PF bwp_cand2 ＝PF 2
PF bwp_cand3 ＝PF 3
PF bwp_cand4 ＝PF 4
assume PF in all candidates bwp_cand3 If the value of BWP candidate number 3 is highest as UE k Is a minimum BWP configuration of (a).
The BWP candidate No. 7.3 occupies subband 3, the configuration number of the subband is updated as follows:
nrofConfig 3 ＝nrofConfig 3 +1
nrofConfig 2 ＝nrofConfig 2 -1
nrofConfig 3 ＝nrofConfig 3 -1
the number of configurations of subband 1 and subband 4 is unchanged.
8. Configuration of UE by the method of embodiment 3 above k The remaining BWP.
According to the 5G communication method provided by the embodiment of the invention, bwp is reconfigured for the user equipment according to the acquired 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, the 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 the user equipment; acquiring DCI format files of a network system;
an allocation module 66, configured to allocate bwp to the ue according to the bandwidth requirement of the ue.
In one embodiment, the system further comprises:
the indication bit calling module is used for calling indication bits in the DCI format file after the acquisition module acquires the bandwidth requirement of the user equipment and the DCI format file; wherein, the DCI format file comprises an indication bit;
the bwp determining module is specifically configured to:
and according to the bandwidth requirement, determining bwp corresponding to the bandwidth requirement through an indication bit in the DCI format file.
In one embodiment, the system further comprises:
a first judging module, configured to judge bwp whether the utilization rate of bwp determined by the determining module has reached a preset load;
and the self-adaptive adjustment module is used for expanding the frequency range of the determined bwp if the utilization rate of bwp determined by the bwp determination module reaches the preset coincidence.
In one embodiment, the system further comprises:
and the adaptive allocation module is configured to reallocate bwp the ue according to the frequency range of the bandwidth requirement of the ue if the bwp determination module determines that bwp corresponding to the bandwidth requirement is not available.
In one embodiment, the system further includes a DCI format file, and the indication bit is set in the DCI format file;
wherein 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 bwp determines that the utilization rate of bwp determined by the module according to the indication bits in the DCI format file has reached the preset load, the determined bwp is enlarged to meet the bandwidth requirement of the user equipment; the technical problem of network blocking or congestion caused by flexibly adjusting the bandwidth range of bwp in the prior art is effectively solved; in addition, when any one bwp does not meet the bandwidth requirement of the user equipment at present, bwp is allocated to the user equipment again, so that the technical problem that the user equipment cannot experience the limiting network speed is effectively solved.
Corresponding to the 5G communication method provided by the embodiment of the present invention and applied to the period when the network access amount exceeds the preset access amount, 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 ue according to the priority of the ue if the current time period is a network access amount centralized access time period;
an activation module 76 for selecting an activation bwp for the user device;
wherein the time period in the network access amount set is a time period in which the user equipment accessing the network exceeds a predetermined value.
In one embodiment, the processing module comprises:
a dividing unit for dividing the bandwidth frequency of each bwp by the specified service type;
a priority determining unit for calculating a priority of each bwp for the current user equipment;
an allocation unit for allocating bwp to the user equipments according to the priority of each bwp to the current user equipment.
Wherein the current ue is the highest priority ue requesting allocation bwp.
In one embodiment, the dispensing unit comprises:
the minimum bwp determines the subunit for taking bwp with the highest priority for the current user equipment as the minimum bwp of the user equipment;
a special bwp determining subunit, configured to allocate four special bwp for the user equipment based on the bandwidth and the frequency domain of the minimum bwp, centering on the minimum bwp; wherein the bandwidth frequencies in the four dedicated bwp partially overlap.
In one embodiment, the activation module includes:
a calculating unit, configured to calculate, according to a channel quality average value of the user equipment, a bandwidth to be occupied by the user equipment in a current transmission time interval;
and the activating unit is used for activating the special bwp which is larger than the bandwidth to be occupied in the current transmission time interval and is closest to the bandwidth to be occupied in the current transmission time interval in the four special bwp and notifying the special bwp to the user equipment.
According to the 5G communication system provided by the embodiment of the invention, the processing module reconfigures bwp for the user equipment according to the time period acquired by the acquisition module, and bwp can be overlapped.
Corresponding to the 5G communication method and system applied to the network side provided in the embodiment of the present invention, the embodiment of the present invention provides a network device, which is shown in fig. 8, and includes a processor 810, a transceiver 820, a memory 830, and a bus interface. Wherein:
in the 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 achieves the same technical effects, and is not repeated herein.
In fig. 8, a bus architecture may be comprised of any number of interconnected buses and bridges, and in particular one or more processors represented by the processor 810 and various circuits of the memory, represented by the memory 830, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 820 may be a number of elements, i.e., including a transmitter and a receiver, providing 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 invention also provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements the processes of the above method embodiment, and can achieve the same technical effects, and in order to avoid repetition, the description is omitted here. Wherein the computer readable storage medium is selected from Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic disk or optical disk.
Corresponding to the 5G communication method and system applied to the period when the network access amount exceeds the preset access amount provided in the embodiment of the present invention, the embodiment of the present invention provides a network device, as shown in fig. 9, where the network device includes a processor 910, a transceiver 920, a memory 930, and a bus interface. Wherein:
in the embodiment of the present invention, the network device further includes: a computer program stored in the memory 930 and capable of being executed 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 achieves the same technical effects, and is not repeated herein.
In fig. 9, a bus architecture may comprise any number of interconnecting buses and bridges, with various circuits of the one or more processors, as represented by processor 910, and the memory, as represented by memory 930, being chained together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. Transceiver 920 may be a number of elements, including a transmitter and a receiver, providing 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.
The embodiment of the invention also provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements the processes of fig. 5 in the above method embodiment, and can achieve the same technical effects, so that repetition is avoided, and no further description is provided herein. Wherein the computer readable storage medium is selected from Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic disk or 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 one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.
Claims (10)
1. A 5G communication method applied to a network side of a 5G communication system, the method comprising:
acquiring the bandwidth requirement of user equipment; acquiring DCI format files of a network system;
determining bwp allocated to the user equipment through the DCI format file according to the bandwidth requirement;
assigning the determined bwp to a user equipment;
wherein, 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 according to the bandwidth requirement through the indication bit in the DCI format file.
2. The method of claim 1, wherein the determining bwp allocated to the user device according to the bandwidth requirement and the DCI format file comprises:
and if the utilization rate of bwp determined by the indication bit in the DCI format file reaches a preset load, expanding the frequency range of bwp corresponding to the determined bandwidth requirement.
3. The method of claim 1, wherein the determining bwp allocated to the user device according to the bandwidth requirement and the DCI format file comprises:
if it is determined by the indication bit of the DCI format file that any one bwp does not meet the bandwidth requirement of the user equipment, reallocating bwp to the user equipment according to the frequency range of the bandwidth requirement of the user equipment.
4. The method of claim 1, wherein the indication bit is set in an extended DCI format indication bit or in a newly added field of a DCI format file.
5. A 5G communication system, comprising:
the first acquisition module is used for acquiring the bandwidth requirement of the user equipment; acquiring DCI format files of a network system;
bwp determining module, configured to determine bwp allocated to the user equipment according to the bandwidth requirement and the DCI format file;
an allocation module, configured to allocate bwp to a user equipment according to a bandwidth requirement of the user equipment;
the indication bit calling module is used for calling indication bits in the DCI format file after the acquisition module acquires the bandwidth requirement of the user equipment and the DCI format file; wherein, the DCI format file comprises an indication bit;
the bwp determining module is specifically configured to:
and according to the bandwidth requirement, determining bwp corresponding to the bandwidth requirement through an indication bit in the DCI format file.
6. The system of claim 5, further comprising:
a first judging module, configured to judge bwp whether the utilization rate of bwp determined by the determining module has reached a preset load;
and the self-adaptive adjustment module is used for expanding the frequency range of the determined bwp if the utilization rate of bwp determined by the bwp determination module reaches the preset coincidence.
7. The system of claim 5, further comprising:
and the adaptive allocation module is configured to reallocate bwp the ue according to the frequency range of the bandwidth requirement of the ue if the bwp determination module determines that bwp corresponding to the bandwidth requirement is not available.
8. The system of claim 5, further comprising a DCI format file, the indication bit being disposed in the DCI format file;
wherein the indication bit is set in the extended DCI format indication bit or in a newly added field of the DCI format file.
9. A network device comprising a memory, a processor and a computer program on the memory and executable on the processor, which when executed by the processor implements the 5G communication method of any of claims 1-4.
10. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the 5G communication method according to any of claims 1 to 4.
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