CN1788462A - Method for controlling wireless access based on multiple service priority level in UMTS - Google Patents

Method for controlling wireless access based on multiple service priority level in UMTS Download PDF

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Publication number
CN1788462A
CN1788462A CNA038266962A CN03826696A CN1788462A CN 1788462 A CN1788462 A CN 1788462A CN A038266962 A CNA038266962 A CN A038266962A CN 03826696 A CN03826696 A CN 03826696A CN 1788462 A CN1788462 A CN 1788462A
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priority
access request
new access
service
load
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CN100459565C (en
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徐志宇
李惠镝
赵柏峻
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UTStarcom China Co Ltd
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UTStarcom China Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/76—Admission control; Resource allocation using dynamic resource allocation, e.g. in-call renegotiation requested by the user or requested by the network in response to changing network conditions
    • H04L47/762—Admission control; Resource allocation using dynamic resource allocation, e.g. in-call renegotiation requested by the user or requested by the network in response to changing network conditions triggered by the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/11—Identifying congestion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/15—Flow control; Congestion control in relation to multipoint traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
    • H04L47/2416—Real-time traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
    • H04L47/2441—Traffic characterised by specific attributes, e.g. priority or QoS relying on flow classification, e.g. using integrated services [IntServ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/74—Admission control; Resource allocation measures in reaction to resource unavailability
    • H04L47/745—Reaction in network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/80—Actions related to the user profile or the type of traffic
    • H04L47/801—Real time traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/80—Actions related to the user profile or the type of traffic
    • H04L47/805—QOS or priority aware
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/82—Miscellaneous aspects
    • H04L47/821—Prioritising resource allocation or reservation requests
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/82—Miscellaneous aspects
    • H04L47/824—Applicable to portable or mobile terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H04W48/06—Access restriction performed under specific conditions based on traffic conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The present invention relates to a method for controlling a wireless access by adjusting the load and matching the rate in a 3G mobile communication system (UMTS), based on the cell wireless load and the priority of a requested access. In the case of a wireless overload in a cell, the load services in the cell are adjusted according to the different priorities, and transmission rate of the access service can be also adjusted. The number of the high priority and real time traffic is maximized to meet the requirement of the system.

Description

Method for controlling wireless access based on multiple service priority level in UMTS
Multi-service based in UMTS
Priority wireless access control method technical field
The invention relates to a wireless access control method for carrying out load adjustment and rate negotiation in a third generation (3G) Mobile communication System UMTS (Universal Mobile Telecommunication System) according to the wireless load condition of a cell and the access priority of a request service. The method flexibly adjusts the cell load service according to the strategy of enabling the low priority level service to be located at the high priority level service according to the conditions of different service loads in the cell load and under the condition of overload of the cell wireless load, and can adjust the transmission rate of the accessed service, maximize the number of the high priority level and real-time service in the cell and meet the requirements of a system. Background
In the third generation mobile communication system UMTS, the network planning is no longer related to the problem of channel allocation, but the problem of radio Access control becomes very complicated due to the "soft capacity" in WCDMA (Wideband Code Division Multiple Access) systems.
In fact, WCDMA systems are interference limited systems and their cell capacity cannot be reflected at all by the number of call connections. The ability to access a call is determined based on whether the required signal-to-interference ratio (SIR) is maintained for all existing calls in the cell after the call is accessed. The SIR value is the ratio of received power to interference level and is closely related to the power control mechanism and the distance between the calling user and the base station. Because each base station has a limited transmit power, the closer the calling subscriber is to the base station, the smaller the transmit power required by the base station, and the greater the number of accessible subscribers. The power control employed in UMTS is to adjust the SIR to achieve the appropriate performance indicators, such as block error rate (BLER) and Bit Error Rate (BER), at the receiver. The larger the received power variation, the higher the target SIR value needs to be. Whether a certain access request can be accessed is closely related to the load condition of the current cell and the service type of the access request itself (different power and SIR levels are needed to maintain the amount of the service required).
When accessing a certain access request, two situations arise:
1. the request is accessed normally, and other users in the cell are returned to the balance state under the power control because of the change of interference;
2. the service is accessed incorrectly and some users in the cell cannot return to the balanced state under power control due to interference variation, resulting in call drop. Mainly because the interference level is too high and the transmit power is limited so that the SIR does not reach the minimum SIR level required for some services.
Under ideal conditions, the wireless access control method is accessed only when the calling user can access normally and other users can reach a balanced state. However, this ideal situation may exist only if accurate information is obtained about the propagation channels of all calling users. It is more practical to decide whether to access the calling subscriber based on part of the information obtained in the cell.
Currently, the radio access control basically adopts the following methods.
-interactive access control method: the method is also an ideal access control method. The method firstly accesses the calling user request and tests whether the SIR of all users can reach the balance state to decide whether to access the calling request. This approach is not suitable for real-time systems because severe convergence problems are encountered when testing whether users reach equilibrium, and the convergence of non-real-time users cannot be evaluated.
A power-based access control method: the method controls access to calling users based on capacity versus power limitations in a CDMA system. In the downlink situation, the base station transmitting power is limited, and the access control method judges whether to access the call according to whether the transmitting power required by the call can make the base station transmitting power exceed the total transmitting power limit.
An access control method based on interference: in order to avoid that the mobile phone frequently reports the power level to the base station during the uplink access control, the base station can evaluate the current cell load by measuring the current interference level and judge whether the call should be accessed according to the noise rise level caused by accessing the calling user.
-access control method based on call connection: the method converts the average capacity of the cell into the number of accessible call connections and is very simple to implement. But in
In the WCDMA system, due to the "soft capacity" relationship, this method is inefficient and has poor practicality.
In UMTS, an interference-based access control method among the above-discussed access control methods is generally used in the uplink, and a power-based access control method is used in the downlink. The access control method respectively evaluates the load rise of uplink and downlink caused by accessing a new call or changing a wireless access bearer, and the new access request can be granted to access only when the uplink and downlink access permission rules are simultaneously met.
A flowchart of a conventional radio access control method is shown in fig. 1. When a new call request, a handover request or a transport channel change is received on carrier C1, the flow advances from step SP101 to step SP 102.
In step SP102, the radio access control method detects whether there is an overload warning, and if there is a radio overload warning, the process flow proceeds to step SP108, where the new request is rejected and the process ends.
If no radio overload warning is determined in step SP102, it is detected in step SP103 whether the uplink interference exceeds the threshold after the request is accessed, and it is determined whether the uplink service request is received. If it is determined that the uplink service request cannot be received the process flow proceeds to the step SP108 where the new request is rejected and the process ends.
If it is determined in step SP103 that the uplink interference does not exceed the threshold after the request is accessed, it is detected in step SP104 whether the downlink transmission power is greater than the total transmission power, and it is determined whether to receive the downlink real-time service request. If it is determined that the downstream real-time service request cannot be received, the process flow proceeds to step SP108, where the new request is rejected and the process ends. If it is determined in the step SP104 that the downlink transmission power is not greater than the total transmission power, the hardware resources of the base station are detected in the step SP105 to determine whether the hardware of the base station is overloaded. If the base station hardware has been overloaded, the process flow proceeds to step SP108, rejecting the new request and ending the process.
If it is determined in step SP105 that the base station hardware resources are sufficient, the channel code resources are detected in step SP106 to determine whether there is a channel code allocation. If no channel code can be assigned to the new access request, the process flow proceeds to step SP108, rejecting the new request and ending the process.
If it is determined in step SP106 that a channel code can be assigned for the new access request, the process flow proceeds to step SP 107. In step SP107, the request is accessed when all the above-mentioned detections have passed.
However, the conventional access methods cannot fully satisfy the requirement of radio access control in UMTS, they treat users with different priorities equally, and there is no flexible load adjustment strategy after overload. Disclosure of Invention
The invention provides a wireless access control method based on multi-service, multi-priority and rate negotiation in UMTS, which takes the characteristics of multi-service user and multi-priority service access in the UMTS into consideration.
According to the present invention, there is provided a wireless access control method based on multi-service, multi-priority and transmission rate negotiation in a UMTS system, comprising the steps of: a) Setting the priority of a new access request according to the QoS of the request multi-service; b) Calculating the total load of all services including the new access request; c) Detecting whether a wireless overload warning exists in the cell according to the total load calculated in the step b); d) If a radio overload warning is detected in the step c), the transmission rate of the traffic having a lower priority than the priority of the new access request is decreased to reduce the overall load level, returning to the step b), e) accessing the new access request if no radio overload warning is detected in the step c).
Wherein the radio overload warning is determined by the load control unit as a "pre-overload" state and an "overload" state depending on the current load state and the capacity of the cell, and the new access request is not accessed if the radio overload warning detected in step d) is the "overload" state.
According to the wireless access control method, under the condition of different service loads in the cell load, under the condition of overload of the cell wireless load, the cell load service is flexibly adjusted according to the strategy of the low-priority service and the high-priority service, the transmission rate of the access service can be adjusted, and the number of the high-priority and real-time services in the cell is maximized, so that the system requirement is met. Drawings
Fig. 1 illustrates a flowchart of a conventional radio access control method; and
fig. 2 is a flowchart illustrating a radio access control method based on multi-service, multi-priority and transmission rate negotiation in a UMTS system according to the present invention. Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In the present invention, according to 3GPP (3)rdGeneration partial reject QoS (Quality of Service) classification, classifying all access users according to their priorities, and performing reasonable rate negotiation to maximize high-priority users in case of access congestion according to the priorities of the access users.
The basic idea of the invention is that a high priority user enjoys a higher right when accessing than a low priority user, and the low priority user is willing to sacrifice (reduce) his own access data transmission rate to reduce the load level when congested, thereby letting the high priority user access. If the QoS of the user with low priority does not have the real-time requirement, the user with low priority is even suspended when the congestion reaches a certain degree, and the number of the access users with high priority and strong real-time performance reaches the maximum value. When the cell load decreases, these low priority and low real-time demanding users are re-allowed to transmit data and gradually increase their rate to reach the requested maximum transmission rate.
Table 1 shows the priorities defined according to the different traffic user QoS classes. Priority defined according to QoS classification
Note that in category 3, such Traffic priorities may be further subdivided into n classes according to "Traffic handling priority" in the RAB (radio access bearer) attribute.
A radio access control method according to the present invention will be described in detail below with reference to the accompanying drawings based on the above-described classification. Fig. 2 shows a flowchart of a radio access control method based on multi-service, multi-priority and transmission rate negotiation in a UMTS system according to the present invention.
As shown in fig. 2, in step SP1, when a new call request, a handover request or a transmission channel change is received on carrier C1, the user request priority class is set to Q according to the classification of table 1 based on the RAB attributes. If the service is a composite service (a combination of multiple services), the access priority of the service is set according to the lowest priority service in the composite service. For example, when the access service is "session + background", the service setting Q =4 according to "background" in which the priority is low. Next, initialization setting P-4, i =3 is performed. Where P represents the lowest allowed priority traffic level and i represents a traffic adjustable transmission rate level of 3, e.g., 128kbps, 64kbps, 28.8kbps and 384kbps, 128kbps, 64kbps, respectively, for "streaming" and "interactive" users. The minimum transmission rates were 28.8kbps and 64kbps, respectively. Among the Qos classifications of table 1, priorities x = l and 2 are real-time traffic and require a Guaranteed minimum transmission rate (Guaranteed bit rate). Therefore, although the x = l type traffic has a priority greater than the x = l type traffic, when the wireless traffic is overloaded and the Q = l type traffic requests access, the priority x =2 type traffic reduces the transmission rate to the minimum guaranteed transmission rate at most, and the non-real-time traffic of the priority x =3 or x =4 type may be suspended or released.
Then, in step SP2, the total uplink and downlink loads of priority from 1 to P in the current cell are calculated according to the following formula, and all traffic with priority higher than P is suspended or released in case of overload. The method for calculating the total uplink and downlink loads, for example, the uplink interference calculation and the downlink transmission power calculation, are described in detail in chapter nine "WCDMA for UMTS" published by John Wiley & Sons 2001, by Harri Holma, and Antti Toskala, and will be omitted here.
Figure IMGF000009_0001
Wherein Lm ^ p and LDL,PIs the load of all uplink and downlink traffic with priority p, LULAnd LDLIs the total uplink and downlink load of the cell.
Next, in step SP3, it is detected whether the current cell has an overload warning from the "Load Control (LC)" unit, if the overload warning occurs in the uplink and downlink, it enters the transmission rate negotiation section based on priority (steps SP4 to SP5, SP51 to 54, and SP 20), and if no overload warning occurs, it enters the normal access load detection section (steps SP6, SP71 to SP72, SP81 to SP85, SP9, and SP11 to SP 14).
These two cases are described separately below.
First, if an overload warning is detected in step SP3, a state of wireless overload is detected in step SP 4.
The radio overload carries two states, "pre-overload" and "overload" and is determined by a "Load Control (LC)" unit based on the current load state and the capacity of the cell.
If it is determined in step SP4 that an "overload" condition has occurred, indicating that the cell overload is relatively severe and not suitable for accessing any request, the unit adjusts the cell load back to the normal state by "Load Control (LC). At this point the process flow proceeds to step SP20 to reject the access new request and end the whole flow.
In step SP4, when the "pre-overload" state occurs, indicating that the cell load is possibly overloaded at this time, it can be adjusted according to the priority of the access request, allowing the access of the high priority service and preventing the access of the low priority user. At this time, the process flow advances to step SP 5.
In step SP5, if it is determined that the access request priority Q =4, indicating that the access request is the lowest priority, the process flow proceeds to step SP20, where the request is then denied and the entire flow is ended.
If it is determined in step SP5 that the access request priority Q is not equal to 4, the process flow proceeds to step SP 51.
In step SP51, it is judged whether or not the access request priority is 4> Q ≧ 3. If it is determined that the access request priority is 4> Q ≧ 3, the service request is an "interactive" type service, the process flow proceeds to step SP 53. If it is determined in step SP51 that the access request priority Q <3, the service is a high-priority real-time service, and the process flow proceeds to step SP 52.
In the step SP53, the access request priority 4 is determined>When Q is greater than or equal to 3, firstly, the service currently in the access state and with the priority lower than Q in the cell is suspended or rejected, and the service with the priority x = Q in the cell is subjected to the rate negotiation, that is, the traffic load transmission rate Rj with the priority x = Q is simultaneously reduced to the next level
Figure IMGF000011_0001
For example, the priority Q =3.1 of the traffic of the access user, and in case of overload, all the traffic transmission rates of x =3.1 can be from R3=384kbps gradually drops to the microspheres =321 Λ ρ 8, while higher priority users are not affected.
The process then proceeds to step SP54 where it is determined whether the traffic load transmission rate Rj of the same priority x = Q can be guaranteed to be greater than its lowest transmission rate after the "rate co-quotient". If the traffic load transmission rate Rj with the same priority x = Q can be guaranteed to be greater than the lowest transmission rate, it indicates that the new service request is possibly allowed to be accessed, and the flow returns to step SP 2. Otherwise, the process flow proceeds to step SP20 to reject the new service request and end the whole flow.
In step SP52, after determining that the access request priority Q <3, the service is a higher priority real-time service. At this time, in order to accelerate the method adjustment speed and ensure the service odd-sought real-time requirement and the minimum Guaranteed transmission rate (Guaranteed bit rate) requirement, firstly, non-real-time services with the priority x =3 or x =4 and the like are suspended or # is put, and then, the transmission rate of the services with the priority x =2 is gradually reduced until the minimum Guaranteed transmission rate is reached.
Likewise, after this "rate negotiation", the process flow also proceeds to the step SP 54. In step SP54, it is determined whether the load transmission rate Rj of the priority x = type 2 traffic can be guaranteed to be greater than the lowest transmission rate thereof. If the priority x =2 service can be guaranteed to have a load transmission rate Rj greater than its lowest transmission rate, it indicates that the new service request is possibly allowed to be accessed, and the flow returns to step SP 2.
When the transmission rate of all priority x =2 services of the cell is adjusted to the lowest guaranteed transmission rate and the cell is still in an overloaded state, the process flow proceeds to step S20, where the service request is rejected and the whole process is ended.
When the transmission rate is reduced to a certain degree, the load of the cell is no longer in an overload state, then the priority service can be accessed, and then the normal access load detection part is entered.
Normal load access detection when no radio overload warning is determined in a cell is described below
If it is determined in step SP3 that the cell has no overload warning, it indicates that the cell is currently in a normal load state. The process flow advances to step SP 6.
When the cell is in a normal load state, it needs to check whether the cell can still maintain a normal load balance state after accessing the service request. Whether to access a new load is related to the load type, the measurement standards of real-time service and non-real-time service are different, and the method is different. If the service is a composite service (a combination of multiple services), both real-time and non-real-time properties are checked, and access can only be made if all composite services pass the check.
First, in step SP6, it is judged whether the type of RAB is the real-time load type or the non-real-time load type. If it is a real-time load type, the process flow proceeds to step SF 71. If it is a non-real-time load type the process flow proceeds to step SP 72. The following specifically describes the two service cases.
For the real-time service, in step SP71, according to the loading condition and the service classification condition of each carrier frequency and the specific requirements of the operator, the suitable carrier frequency Cm is searched and selected. For example, new traffic requests may be accessed to cells that are lightly loaded according to a "balanced load" algorithm. Or respectively accessing the service with higher transmission rate requirement and the service with lower transmission rate requirement to the cells of different carrier frequencies according to a service classification algorithm.
Then, in step SP81, the uplink load of the newly requested real-time service is checked to determine whether the uplink real-time service request is received. If the upstream traffic exceeds the load threshold at this point, the process flow proceeds to step SP85 where the request is rejected and the overall flow is ended.
If it is determined in step SP81 that the upstream real-time service request can be received, the process flow proceeds to step SP 83. In step SP83, the downstream load of the newly requested real-time service is checked to determine whether a downstream real-time service request is received. If the downlink traffic exceeds the load threshold at this time, the process flow proceeds to step SP85, where the request is denied and the entire process ends. If it is determined in step SP83 that the downstream real-time service request can be received, the process flow proceeds to step SP 9.
Similarly, for the non-real-time service, in step SP72, a suitable carrier frequency Cm is searched and selected according to the loading condition and the service classification condition of each carrier frequency and the specific requirements of the operator. For example, new traffic requests may be accessed to a less loaded cell according to a "balanced load" algorithm. Or respectively accessing the service with higher transmission rate requirement and the service with lower transmission rate requirement to the cells of different carrier frequencies according to a service classification algorithm.
Then in step SP82 the upstream load of the newly requested non-real time service is examined to determine whether the upstream non-real time service request is received. If the uplink traffic exceeds the load threshold at this point, process flow advances to step SP85 where the request is denied and the entire flow ends.
If it is determined in step SP82 that the upstream non-real-time service request can be received, the process flow proceeds to step SP 84. In step SP84, the downlink load of the newly requested non-real-time service is checked to determine whether a downlink non-real-time service request is received. If the traffic exceeds the load threshold at this time, process flow advances to step SP85, where the request is denied and the entire process ends.
If it is determined in step SP84 that the downstream non-real-time service request can be received, the process flow proceeds to step SP 9.
It should be noted that, in the above process, the uplink and downlink loads of the newly requested real-time service and the non-real-time service need to be checked according to the service classification. In the case of a composite service (a combination of multiple services), then all services in the composite service need to be examined. If either the upstream or downstream traffic of either traffic exceeds the load threshold, the request is denied and the entire process is completed.
When all the radio resources are checked to pass, i.e., when the new service request is allowed to be accessed, in step SP9, it is checked whether the hardware resources of the base station meet the requirement for accessing the request. If the base station hardware resources do not meet the requirements for accessing the new request the process flow proceeds to the step SP20 where the request is rejected and the whole flow is ended.
If it is determined in step SP9 that the base station hardware resources can meet the requirements for accessing the new request, the presence or absence of a redundant channel code allocation for the cell is checked in step SP 11. If no redundant channel codes are allocated to the new request the process flow proceeds to the step SP20 where the request is rejected and the whole flow is ended.
If it is determined in step SP11 that there is an unnecessary channel code allocated to the new request in the cell, it is determined in step SP12 whether Cm is equal to Cl. If Cm = Cl, the request is accessed on the C1 carrier frequency in step SP 14; if Cm ≠ Cl, then the request is accessed in step SP13 and a hard handoff is initiated to carrier frequency Cm.
It can be seen from the above description that the wireless access control method for load adjustment and rate negotiation in the third generation (3G) mobile communication system UMTS according to the cell wireless load condition and the request service access priority can flexibly adjust the cell load service according to the policy of the low priority service yielding high priority service under the condition of cell wireless load overload according to the condition of different service loads in the cell load and can adjust the transmission rate of the access service, thereby maximizing the number of high priority and real-time services in the cell and meeting the requirements of the system.
While this invention has been described in terms of preferred embodiments, the present invention can be further modified within the spirit and scope of this disclosure. This application is therefore intended to cover any variations, uses, or adaptations of the invention following its general principles. Further, this application is intended to cover such departures from the present disclosure as come within known or customary practice in the art to which this invention pertains and which fall within the limits of the appended claims.

Claims (11)

  1. Figure IMGF000015_0001
    1. A wireless access control method based on multi-service, multi-priority and transmission rate negotiation in a UMTS system, comprising the steps of:
    a) setting the priority of a new access request according to the QoS of the request multi-service; b) Calculating the total load of all services including the new access request; c) Detecting whether there is a radio overload warning in the cell based on the total load calculated in step b);
    d) if a radio overload warning is detected in step c), reducing the transmission rate of traffic having a lower priority than the priority of the new access request to reduce the total load level, returning to step b);
    e) accessing the new access request if no radio overload warning is detected in step c).
  2. 2. The radio access control method of claim 1, wherein the radio overload warning is determined as a "pre-overload" state and an "overload" state by the load control unit according to the current load state and the capacity of the cell in step c), and the new access request is not accessed if the radio overload warning detected in step d) is the "overload" state.
  3. 3. The radio access control method according to claim 1 or 2, further comprising the steps of:
    f) checking whether the cell can still keep a normal load balance state after accessing the new access request, and if the cell can not keep the normal load balance state, rejecting the new access request;
    g) when the new access request is allowed to be accessed in step f), detecting whether base station hardware resources meet the requirement of accessing the new access request, and if the base station hardware resources cannot meet the requirement of accessing the new access request, rejecting the new access request; h) if in step (ii)g) If the base station hardware resource can meet the requirement of accessing the new access request, checking whether redundant channel code allocation exists in the cell, and if the redundant channel code allocation does not exist, rejecting the new access request;
    i) after the channel code allocation check, if Cm = Cl, accessing the new access request on the carrier frequency C1; and if Cm is not equal to Cl, accessing the new access request and initiating hard switching to the carrier frequency Cm.
  4. 4. The radio access control method of claim 3, wherein in step f), if the new access request is a composite service, both real-time and non-real-time are checked, and the new access request can be accessed only when all composite services pass the check.
  5. 5. The radio access control method according to claim 4, wherein the new access request is accessed to a cell with a lighter load according to a "balanced load" algorithm.
  6. 6. The wireless access control method of claim 4, wherein the service with higher transmission rate requirement and the service with lower transmission rate requirement in the new access request are respectively accessed to cells of different carrier frequencies according to a "traffic classification" algorithm.
  7. 7. The radio access control method according to any of claims 4 to 6, wherein the priority of the new access request is defined according to the QoS classification shown in the following table:
    Figure IMGF000016_0001
  8. 8. the radio access control method of claim 7, wherein the priority of category 3 is further refined according to the traffic handling level in the radio access bearer RAB attributes.
  9. 9. The radio access control method according to claim 7 or 8, wherein in a "pre-overload" state, if the new access request priority Q =4 indicates that the new access request is of lowest priority, the new access request is subsequently rejected.
  10. 10. The radio access control method according to claim 7 or 8, characterised in that if the new access request priority is 4>If Q is more than or equal to 3, suspending or rejecting the service which is in the access state and has the priority lower than Q in the cell, carrying out rate negotiation on the service with the priority x = Q in the cell, and simultaneously reducing the service load transmission rate Rj with the same priority x = Q to the next level
    Figure IMGF000017_0001
    At this time, if the traffic load transmission rate Rj with the same priority x = Q can be guaranteed to be greater than the lowest transmission rate thereof, the new access request is allowed to be accessed; otherwise, rejecting the new access request.
  11. 11. The radio access control method according to claim 7 or 8, characterized in that if the new access request priority Q <3, non-real-time traffic of priority x =3 or x =4 is suspended or released, then the transmission rate of traffic of priority x =2 is gradually decreased until the lowest guaranteed transmission rate, at which time, if the load transmission rate Rj of the traffic of priority x =2 can be guaranteed to be greater than its lowest transmission rate, the new access request is allowed to be accessed; and if all the priority x =2 service transmission rates of the cells are adjusted to the lowest guarantee transmission rate, and the cells are still in an overload state, rejecting the new access request.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100411477C (en) * 2004-12-22 2008-08-13 华为技术有限公司 Access control method in mobile communication system

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101990262A (en) * 2009-08-05 2011-03-23 北京大学 Access control method, device and cell base station of wireless communication network
CN101896000A (en) * 2010-07-22 2010-11-24 中兴通讯股份有限公司 Method and device for processing mobile terminal Wi-Fi application
CN102547912B (en) * 2012-01-17 2015-08-05 电信科学技术研究院 A kind of connection control method and device
CN102905315B (en) * 2012-09-24 2016-03-09 华为终端有限公司 Non-real-time service dispatching method, equipment and system
CN104427624B (en) * 2013-08-20 2018-03-23 中国移动通信集团北京有限公司 A kind of common network resource distribution method and system
CN103442393A (en) * 2013-09-06 2013-12-11 美商威睿电通公司 Device and method for prolonging dormancy period of internet of things device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6442139B1 (en) * 1998-01-29 2002-08-27 At&T Adaptive rate control based on estimation of message queuing delay
CA2409522A1 (en) * 2000-05-17 2001-11-22 Qualcomm Incorporated Method and apparatus for transmission rate modification of communication channels
AU2000275416A1 (en) * 2000-10-03 2002-04-15 U4Ea Technologies Limited Allocating priority levels in a data flow
CN1133292C (en) * 2000-12-29 2003-12-31 深圳市中兴通讯股份有限公司 Upward acceptance controlling method in wideband CDMA system
CN1138373C (en) * 2001-04-07 2004-02-11 华为技术有限公司 Calling permission control method in multiservice code division multiple address mobile communication system
WO2002084476A1 (en) * 2001-04-13 2002-10-24 Comsat Corporation Method for dynamic load management of random access shared communications channels

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100411477C (en) * 2004-12-22 2008-08-13 华为技术有限公司 Access control method in mobile communication system

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