CN107911849A - A kind of access method for pre-emptively in LTE system acceptance controlling decision - Google Patents
A kind of access method for pre-emptively in LTE system acceptance controlling decision Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The present invention discloses the access method for pre-emptively in a kind of LTE system acceptance controlling decision, including：The service condition of accounting base-station Current resource judges whether to meet triggering access preemptive condition；When meeting to trigger access preemptive condition, all connected state UE are traveled through, find the UE that can be performed release；When meeting triggering access preemptive condition and presence can be performed the UE of release, decide whether to initiate to seize by the type of service of UE or its ARP and QCI information carried according to the Object Selection of request access, and when that can initiate to seize, discharge the UE for being performed release searched out and allow to ask object access base station.By this method can when resource-constrained timely processing high-priority users as VOLTE urgency traffic, improve the access performance and resource utilization of LTE system.
Description
Technical field
The present invention relates to LTE system wireless access technology field, more particularly to a kind of access in accommodating control function is robbed
Account for strategy.
Background technology
Due to the limitation of idle wireless resource and device hardware resource, it is ensured that service quality (the Quality of of carrying
Service, QoS), base station can only support user and the carrying of certain amount.In order to ensure the QoS premises of access bearer
Under, accessing user and carrying as much as possible, base station needs to carry out admission control to the user of request access and the carrying of foundation,
So as to improve the capacity and resource utilization of system.
The application scenarios of accommodating control function are respectively as shown in Figure 1, including three kinds of situations：First, user is in Idle state
Under initial service connection or when receiving paging message and needing to establish connection, user, which to base station sends RRC connections and establishes, to be asked
Message, then base station judged whether that RRC connections can be established according to admission control algorithm；Second, core net sends to base station and holds
When carrying foundation request or bearing modification request, base station judges whether to receive what is carried in message to hold according to the message of reception
Carry；3rd, when connected state user is switched to current area by other cells, Target cell needs to carry out receiving to the user to sentence
Certainly.
Long Term Evolution (Long Term Evolution, LTE) is shared resource system, and all users pass through scheduling
Shared resource.When there is the user of several big data quantities in system, it is possible to all resources are taken, according to traditional admission control plan
Slightly, other users will be unable to access at this time, including the high-priority users for needing to handle urgency traffic are all denied access.And root
According to some operator needs, the high-priority users as VOLTE carry out voice when business, have higher priority, it should
Preferential distribution resource.
Therefore, it is necessary to three kinds of scenes according to figure 1 to formulate corresponding access preemptive policy respectively, when resource reaches door
During limit value, access can be carried out according to the information such as type of service, QCI, ARP and seized, so as to be improved in the range of cell load whole
The access performance and resource utilization of LTE system.
The content of the invention
Access preemption function during the purpose of the invention is to support a certain resource-constrained in acceptance controlling decision, so that
Can when resource-constrained timely processing high-priority users as VOLTE urgency traffic, improve the access of LTE system
Energy and resource utilization.
To solve the above problems, the present invention discloses the access method for pre-emptively in a kind of LTE system acceptance controlling decision, specifically
Including：
The service condition of accounting base-station Current resource, including activation carrying number, connected state UE numbers and uplink and downlink PRB are utilized
Rate；And real-time update uplink and downlink PRB utilization rates；
The threshold value for each resource and admission control that the Current resource service condition counted on is set with operator is compared
Compared with, and judge whether to meet triggering access preemptive condition；
When meeting to trigger access preemptive condition, all connected state UE are traveled through, find the UE that can be performed release；
When meeting triggering access preemptive condition and presence can be performed the UE of release, according to the Object Selection of request access
Decide whether to initiate to seize by the type of service of UE or ARP the and QCI information of its carrying, and can initiate
When seizing, discharge the UE for being performed release searched out and allow to ask object access base station；
Wherein, asking the object of access includes：Initial service of the user under Idle state connects or receives paging message
Need to establish the user connected, send carrying establish or the core net of bearing modification request, be switched to by other cells it is current small
The connected state user in area, and corresponding triggering RRC is seized, is carried and seize, switch and seize respectively.
As a preferred embodiment, seize mark according to triggering access to judge whether to meet triggering access preemptive condition, touch
Mark is seized in hair access is：
Work as S=TRUE, meet triggering access preemptive condition；
In formula, NERAB、NUE、NPRB_UL、NPRB_DLRepresent that the currently active carrying number, connected state UE numbers, uplink PRB are utilized respectively
Rate and downlink PRB utilization rates；THERAB、THUE、THPRB_ULAnd THPRB_DLRespectively represent operator set maximum activation carrying number,
Maximum connected state UE numbers, uplink PRB utilization rates threshold value, uplink PRB utilization rate threshold values.
As a preferred embodiment, the UE that can be performed release refers to：Allow to be preempted and UE that priority is minimum.
As a preferred embodiment, seized in triggering RRC, the priority of UE is judged according to ARP；Triggering carrying seize and
When switching is seized, the priority of UE is judged according to ARP and QCI, and when judging UE priority, compares ARP first, if ARP phases
It is same to compare QCI again；APR values are lower, and QCI priority values are lower, then priority is higher.
As a preferred embodiment, it is allowed to which the user being preempted refers to the connected state in addition to the user for not allowing to be preempted
User, the user for not allowing to be preempted include UE attribute Pre-emption Vulnerability for that cannot be preempted, UE's
It is emergency or high Prioriy Access or mo-VoiceCall-v1280 that RRC, which establishes reason, or UE is labeled
For any one in VOLTE user.
As a preferred embodiment, the condition that triggering RRC is seized is connected state UE numbers NUEReach admission control thresholding THUE；
When meeting triggering RRC preemptive conditions and presence can be performed the UE of release, reason is established according to RRC to decide whether to send out
Rise and seize, and select the user of low priority to perform RRC releases according to ARP；RRC, which establishes reason, includes emergency, high
Priority Access and mo-VoiceCall-v1280.
As a preferred embodiment, establish request stage in RRC connections all to access all UE, and each UE is set
One timer；When timer is currently running, it is allowed to the addition of all carryings of the UE, and according to whether the carrying for having QCI1 is established
To judge whether the UE is VOLTE user；Judge whether to meet triggering access preemptive condition again after timer expiry.
As a preferred embodiment, the timing range of timer is 3~5S.
As a preferred embodiment, the condition that triggering carrying is seized is that activation carrying number or PRB utilization rates reach access
Threshold value；When meeting triggering carrying preemptive condition and presence can be performed the UE of release, according to newly-built carrying with that can be performed
The priority comparative result of the ARP and QCI information of the UE of release decides whether to initiate to seize.
As a preferred embodiment, when triggering carrying is seized, if there is user's access to be accessed firstly the need of permission user, when
When activation carrying number or PRB utilization rates reach access threshold value, if the timer of RRC preemption phases is also being run, it is allowed to
The access of all carryings, according to whether having the carrying of QCI1 to determine whether being VOLTE user；After timer expiry, then root
According to whether being that can VOLTE user judge initiate RRC and seize；If the UE has new bearer foundation at this time, further according to carrying ARP and
QCI information judges whether to carrying and seizes.
As a preferred embodiment, the condition that triggering switching is seized is that activation carrying number or PRB utilization rates reach access
Threshold value；When meet switching preemptive condition and presence can be performed the UE of release when, according in handover request information carrying with can
The priority comparative result of the ARP and QCI information of the UE of release is performed to decide whether to initiate to seize.
Beneficial effect：
The present invention is directed to the access method for pre-emptively of LTE system, connecing when supporting a certain resource-constrained in acceptance controlling decision
Enter preemption function, when resource reaches threshold value, access can be carried out according to the information such as type of service, QCI, ARP and seized so that as
The such high-priority users of VOLTE, which carry out voice, can preferentially distribute resource when business, effectively improve the access of LTE system
Energy and resource utilization.
Brief description of the drawings
Fig. 1 is accommodating control function application scenarios schematic diagram；
Fig. 2 finds lowest priority user's flow chart；
Fig. 3 RRC seize flow chart；
Flow chart is seized in Fig. 4 carryings；
Flow chart is seized in Fig. 5 switchings.
Embodiment
First to be explained as follows before specific embodiment is described to the present invention relates to proper noun：
RRC, Radio Resource Control, wireless heterogeneous networks；
ARP, Allocation and retention priority, distribution and reservation priority；
QCI, QoS Class Identifier, QoS class letters；
PRB, Physical Resource Block, Physical Resource Block；
Pre-emption Vulnerability, are preempted ability；
Not pre-emptable, cannot be preempted；
The present invention provides the access method for pre-emptively in a kind of LTE system acceptance controlling decision, specifically comprises the following steps：
Step 1: statistics and the service condition of real-time update base station Current resource, including activation carrying number, connected state UE numbers
With uplink and downlink PRB utilization rates；
Step 2: the threshold value for each factor that the resource utilization counted in comparison step one is set with operator, sentences
It is disconnected whether to have available resources；
Step 3: when resource utilization reaches threshold value, according to the use that the information searching priority such as QCI, ARP is minimum
Family；
Step 4: user sends access request to system, when resource-constrained, carried out respectively according to different access scenes
RRC is seized, carrying is seized and switching is seized.
The present invention be directed to LTE system access preemptive policy so that the high-priority users as VOLTE, resource by
Limit and the business such as voice are carried out under environment.Mainly carry out access according to information such as type of service, ARP and QCI to seize, preferential distribution money
Source, so as to effectively improve the access performance and resource utilization of LTE system.
The present invention is described further with specific embodiment below in conjunction with the accompanying drawings.
Step 1：The service condition of simultaneously real-time update base station Current resource is counted, it is N to be activated carrying number at this timeERAB,
Connected state UE numbers NUE, uplink PRB utilization rates NPRB_UL, downlink PRB utilization rates NPRB_DL；And in resource management system in real time more
New NPRB_UL, NPRB_DLData.
Step 2：The threshold value for each factor that the resource utilization counted in comparison step one and operator are set, sentences
It is disconnected whether to have available resources.
If THERAB, THUE, THPRB_ULAnd THPRB_DLThe maximum activation carrying number that operator is set, maximum connection are represented respectively
State UE numbers, uplink and downlink PRB utilization rate threshold values, then whether trigger access seize mark it is specific as follows：
In formula, NERAB、NUE、NPRB_UL、NPRB_DLRepresent that the currently active carrying number, connected state UE numbers, uplink PRB are utilized respectively
Rate and downlink PRB utilization rates；THERAB、THUE、THPRB_ULAnd THPRB_DLRespectively represent operator set maximum activation carrying number,
Maximum connected state UE numbers, uplink PRB utilization rates threshold value, uplink PRB utilization rate threshold values.
Work as NERAB、NUE、NPRB_UL、NPRB_DLWhen any one in this four factors reaches its corresponding threshold value, then mark
Know S=TRUE, meet triggering access preemptive condition.
Step 3：When resource reaches threshold value, i.e., mark S=TRUE is seized in triggering access, according to information such as ARP, QCI
Find the minimum user of priority.
Compare ARP first when comparing priority, if ARP is identical to compare QCI again.APR values are lower, and QCI values are lower, priority
It is higher.But if user property Pre-emption Vulnerability are that cannot be preempted Not pre-emptable, or
The RRC of person UE establishes that priority ratio is higher, business relatively more urgent (including emergency, highPrioriyAccess, mo-
VoiceCall-v1280), or UE is marked as VOLTE user, then the user does not allow to be preempted, and returns the result as sky.
With reference to shown in Fig. 2, first, according to carrying out ascending sort to all connected state UE and form UE lists.Wherein, ARP
Represent distribution and retain priority, have different values, usual value 0~15, different ARP values correspond to different priority；
QCI is the QoS class letters of carrying, has different values, usual value 1~9, corresponds to different bearer services respectively, also right
Answer different QCI priority values.ARP values are lower, and QCI priority values are lower, and priority is higher, and UE sorts more rearward.
Then, the UE lists after sequence are begun stepping through from first UE, if user property Pre-emption
Vulnerability is Not pre-emptable, or to establish reason be emergency or high Prioriy to the RRC of UE
Access or mo-VoiceCall-v1280, or UE are marked as VOLTE user, then the user does not allow to be preempted, under
One user continually looks for comparing, and it is relatively low and allow the user being preempted to the last to find priority, is returned if it can not find
Make the return trip empty.
Step 4：User sends access request to system, when resource-constrained, according to the three of Fig. 1 kinds of admission control applications
Scene carries out RRC and seizes, carries and seize and switching is seized respectively.
1) RRC is seized：
RRC, which is seized, to be triggered when community user number reaches admission control thresholding, i.e. NUE≥THUEWhen, established according to RRC
Reason (emergency, high Priority Access, mo-VoiceCall-v1280) decides whether to initiate to rob
Account for, it is to select low priority user to perform RRC releases according to ARP to be preempted user.
It should be noted that different types of service, which corresponds to different RRC, establishes reason.When type of service is urgency traffic
When business, high priority access service, VOLTE business, it is respectively emergency, high that its corresponding RRC, which establishes reason,
Priority Access, mo-VoiceCall-v1280, UE's is higher ranked at this time, can initiate to seize.
But RRC establishes reason None- identified and is called VOLTE at present, and caller VOLTE establishes reason mo- by RRC
VoiceCall-v1280 is also that 3GPP is increased newly on R12 protocol versions to identify, old terminal pervious to R12 is invalid.Cause
This, in order to identify VOLTE user completely, establishes request stage in RRC connections and all accesses all UE, then each UE is set
A fixed timer, thresholding judgement is carried out after waiting timer expiry again.
Specifically can be according to whether the carrying for having QCI1 be established to determine whether being VOLTE user.QCI is QoS of carrying etc.
Level mark, has different values, usual value 1~9 corresponds to different bearer services respectively, and China Mobile's equipment code is clear and definite
It is required that VOLTE voices or video all necessarily there are QCI1 carryings to establish, therefore, determined whether by QCI1 carryings
VOLTE user is more accurate.When connected state UE numbers either activate carrying number or PRB utilization rates reach threshold value, then basis
The relatively low user of the searching result Release priority level of step 3, if step 3 is returned the result as sky, shows that other users cannot
It is preempted, oneself can only be discharged at this time.
Wherein, the effect of timer is：In timer time, it is allowed to which the foundation of all carryings of the UE, identifies whether
It is VOLTE user；Deng carrying out thresholding judgement again after timer expiry, when resource reaches threshold value, if VOLTE user,
It can initiate to seize, be discharged if not VOLTE, then this user.The time that timer is set need to be only ensured at this
In time, UE its service bearer (just including QCI1 for VOLTE user to carry) after RRC successful connections can establish completion i.e.
Can.But can not be too long, the promptness of preemption function is otherwise influenced, under normal circumstances, RRC connections, carrying foundation are all winks
When complete.The rational value range of timer is 3~5s, is normally set up 3s and ensures that UE carryings can establish completion, also not
Can be because of stand-by period too long influence promptness.
RRC with reference to shown in Fig. 3 seizes flow, and in order to identify VOLTE user completely, request stage is established in RRC connections
All UE are accessed, a 3s timer is then set to each UE.
If timer is currently running, allow the addition of all carryings of the UE at this time, when UE establishes the carrying of QCI1 then
It is VOLTE user to mark the UE；If timer expiry, stop the timer and carry out thresholding judging whether that stream is seized in triggering
Journey.
When connected state UE numbers either activate carrying number or PRB utilization rates reach threshold value, then seeking according to step 3
Result is looked for make following judgement：If step 3 returns the result not for sky and asks the grade of access UE low preferential higher than what is found
Level user, then UE access success, and the low priority user that release steps three return；If step 3 return the result to be empty or
The priority of request access UE is relatively low, shows that other users cannot be preempted, can only discharge oneself at this time, UE access failure.
2) carrying is seized：
When activation carrying number or PRB utilization rates reach access threshold value, i.e. NERAB≥THERABOr NPRB_UL≥THPRB_UL
Or NPRB_DL≥THPRB_DLWhen, decided whether according to the searching result of the information such as the QCI of newly-built carrying and ARP and step 3
It can initiate to seize, and the UE for selecting priority relatively low performs release, if step 3 is returned the result as sky, show other users
It cannot be preempted, carrying can only be refused at this time and established.
Flow is seized in carrying with reference to shown in Fig. 4, when activation carries number or PRB utilization rates reach access threshold value,
If the timer that wait is seized in the access in RRC stages is also being run, carrying is successfully accessed, and is accessed the UE at this time and (is set
The UE of the timer) all carryings, judge whether to discharge again after timer expiry；If timer expiry, according to step
Rapid three searching result makees following judgement：If step 3 returns the result not for sky and asks ARP, QCI of access bearer etc.
Level is higher than the low priority user found, then carrying is successfully accessed, and the low priority user that release steps three return；If step
Rapid three return the result as sky or ask the priority of access bearer relatively low, show that other users cannot be preempted, at this time can only
Refusal carrying access.
It is worth noting that, above also mentioned, in order to identify VOLTE user completely, it is necessary first to allow user to access,
Allow the access of all carryings in timer time, according to whether having the carrying of QCI1 to determine whether being VOLTE user；Deng fixed
When device time-out after carry out thresholding judgement again, according to whether being that can VOLTE user judge initiate RRC and seize, if the UE at this time
Also new bearer is established, and is judged whether to carrying further according to loading priority information (i.e. ARP and QCI information) and is seized.Therefore,
The stage seizes the timer for needing to consider UE settings when RRC is seized.
3) switching is seized：
When PRB utilization rates reach the PRB threshold values because of switching access, i.e. NPRB_UL≥THPRB_ULOr NPRB_DL≥THPRB_DL
When, decide whether to send out according to the searching result of the information such as the QCI and ARP carried in handover request information and step 3
Rise and seize, and the UE for selecting priority relatively low performs release, if step 3 is returned the result as sky, shows that other users cannot be by
Seize, switching access can only be refused at this time.
It should be noted that from the point of view of flow is realized switching seize and carry seize be all based on carrying seize, but from
Foregoing description can be seen that both actual is different flows, and access threshold value is also different, and details are not described herein again.
Flow is seized in switching with reference to shown in Fig. 5, when activation carrying number or PRB utilization rates reach switching access threshold value
When, then following judgement is made according to the searching result of step 3：If step 3 is returned the result not as empty and handover request information
ARP, QCI grade of middle carrying are higher than the low priority user found, then switching is successfully accessed, and the return of release steps three is low
Priority users；If the priority that step 3 is returned the result to be carried in empty or handover request information is relatively low, show other
User cannot be preempted, and can only refuse switching access at this time.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this area
For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
- A kind of 1. access method for pre-emptively in LTE system acceptance controlling decision, it is characterised in that including：The service condition of accounting base-station Current resource, including activation carrying number, connected state UE numbers and uplink and downlink PRB utilization rates；And Real-time update uplink and downlink PRB utilization rates；By the Current resource service condition counted on compared with the threshold value for each resource and admission control that operator is set, and Judge whether to meet triggering access preemptive condition；When meeting to trigger access preemptive condition, all connected state UE are traveled through, find the UE that can be performed release；When meeting triggering access preemptive condition and presence can be performed the UE of release, passed through according to the Object Selection of request access The type of service of UE or ARP and QCI information of its carrying decide whether to initiate to seize, and can initiate to seize When, discharge the UE for being performed release searched out and allow to ask object access base station；Wherein, asking the object of access includes：Initial service of the user under Idle state connects or receives paging message needs The user connected is established, the core net of carrying foundation or bearing modification request is sent, is switched to current area by other cells Connected state user, and corresponding triggering RRC is seized, is carried and seize, switch and seize respectively.
- 2. access method for pre-emptively as claimed in claim 1, it is characterised in that mark is seized according to triggering access and is judged whether completely Foot triggering access preemptive condition, mark is seized in triggering access is：Work as S=TRUE, meet triggering access preemptive condition；In formula, NERAB、NUE、NPRB_UL、NPRB_DLRepresent respectively it is the currently active carrying number, connected state UE numbers, uplink PRB utilization rates and Downlink PRB utilization rates；THERAB、THUE、THPRB_ULAnd THPRB_DLRepresent that the maximum activation that operator is set carries number, maximum respectively Connected state UE numbers, uplink PRB utilization rates threshold value, uplink PRB utilization rate threshold values.
- 3. access method for pre-emptively as claimed in claim 1, it is characterised in that the UE that can be performed release refers to：Permission is robbed Account for and UE that priority is minimum.
- 4. access method for pre-emptively as claimed in claim 3, it is characterised in that seized in triggering RRC, judge UE's according to ARP Priority；When triggering carrying is seized and switching is seized, the priority of UE is judged according to ARP and QCI, and judging UE priority When, compare ARP first, if ARP is identical to compare QCI again；APR values are lower, and QCI priority values are lower, then priority is higher.
- 5. access method for pre-emptively as claimed in claim 3, it is characterised in that the user for allowing to be preempted, which refers to remove, does not allow quilt Connected state user beyond the user seized, does not allow the user being preempted to include UE attributes Pre-emption Vulnerability cannot to be preempted, the RRC of UE establish reason for emergency or high Prioriy Access or Mo-VoiceCall-v1280, or UE are marked as any one in VOLTE user.
- 6. access method for pre-emptively as claimed in claim 1, it is characterised in that the condition that triggering RRC is seized is connected state UE numbers NUEReach admission control thresholding THUE；When meeting triggering RRC preemptive conditions and presence can be performed the UE of release, according to RRC Reason is established to decide whether to initiate to seize, and selects the user of low priority to perform RRC releases according to ARP；RRC is established Reason includes emergency, high Priority Access and mo-VoiceCall-v1280.
- 7. access method for pre-emptively as claimed in claim 6, it is characterised in that establish request stage by all UE in RRC connections All access, and a timer is set to each UE；When timer is currently running, it is allowed to the addition of all carryings of the UE, and According to whether the carrying for having QCI1 is established to judge whether the UE is VOLTE user；Judge whether again after timer expiry full Foot triggering access RRC preemptive conditions.
- 8. access method for pre-emptively as claimed in claim 7, it is characterised in that the timing range of timer is 3~5S.
- 9. access method for pre-emptively as claimed in claim 1, it is characterised in that the condition seized is seized and switched in triggering carrying is Activation carrying number or PRB utilization rates reach access threshold value；When satisfaction triggering carrying preemptive condition and presence can be performed and release During the UE put, it is to adjudicate according to newly-built carrying and the priority comparative result of the ARP and QCI information for the UE that release can be performed It is no to initiate to seize；When meeting switching preemptive condition and presence can be performed the UE of release, according in handover request information Carry with the priority comparative result of the ARP and QCI information of the UE that can be performed release to decide whether to initiate to seize.
- 10. access method for pre-emptively as claimed in claim 9, it is characterised in that when triggering carrying is seized, if there is user's access Firstly the need of allowing user to access, when activation carries number or PRB utilization rates reach access threshold value, if RRC seizes rank The timer of section is also being run, it is allowed to the access of all carryings, according to whether having the carrying of QCI1 to determine whether being used for VOLTE Family；After timer expiry, further according to whether being that can VOLTE user judge initiate RRC and seize；If the UE has new bearer at this time Establish, judge whether to carrying further according to ARP the and QCI information of carrying and seize.
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| CN109587717A (en) * | 2018-12-14 | 2019-04-05 | 中国移动通信集团江苏有限公司 | Connect control method, device, equipment and computer readable storage medium |
| CN111757386A (en) * | 2019-03-28 | 2020-10-09 | 成都鼎桥通信技术有限公司 | Download control method and device |
| CN112468210A (en) * | 2020-10-30 | 2021-03-09 | 南京熊猫汉达科技有限公司 | Admission control method suitable for FDMA satellite communication system |
| CN112567860A (en) * | 2018-08-10 | 2021-03-26 | 日本电气株式会社 | Communication system |
| CN113055082A (en) * | 2021-04-07 | 2021-06-29 | 西安交通大学 | Resource allocation method and system based on terminal priority |
| CN113795011A (en) * | 2021-09-07 | 2021-12-14 | 上海优咔网络科技有限公司 | VoLTE calling method for Internet of vehicles |
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| CN111757386A (en) * | 2019-03-28 | 2020-10-09 | 成都鼎桥通信技术有限公司 | Download control method and device |
| CN112468210A (en) * | 2020-10-30 | 2021-03-09 | 南京熊猫汉达科技有限公司 | Admission control method suitable for FDMA satellite communication system |
| CN112468210B (en) * | 2020-10-30 | 2023-02-28 | 中电防务科技有限公司 | Admission control method suitable for FDMA satellite communication system |
| CN113055082A (en) * | 2021-04-07 | 2021-06-29 | 西安交通大学 | Resource allocation method and system based on terminal priority |
| CN113055082B (en) * | 2021-04-07 | 2022-05-20 | 西安交通大学 | Resource allocation method and system based on terminal priority |
| CN113795011A (en) * | 2021-09-07 | 2021-12-14 | 上海优咔网络科技有限公司 | VoLTE calling method for Internet of vehicles |
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