WO2005027431A1 - Procede permettant de commander un acces hertzien fonde sur une priorite multi-services dans un systeme universel de telecommunication mobile (systeme umts) - Google Patents

Procede permettant de commander un acces hertzien fonde sur une priorite multi-services dans un systeme universel de telecommunication mobile (systeme umts) Download PDF

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Publication number
WO2005027431A1
WO2005027431A1 PCT/CN2003/000781 CN0300781W WO2005027431A1 WO 2005027431 A1 WO2005027431 A1 WO 2005027431A1 CN 0300781 W CN0300781 W CN 0300781W WO 2005027431 A1 WO2005027431 A1 WO 2005027431A1
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WO
WIPO (PCT)
Prior art keywords
priority
access request
service
new access
load
Prior art date
Application number
PCT/CN2003/000781
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English (en)
Chinese (zh)
Inventor
Zhiyu Xu
Huidi Li
Baijun Zhao
Original Assignee
Utstarcom (China) Co. Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Utstarcom (China) Co. Ltd. filed Critical Utstarcom (China) Co. Ltd.
Priority to PCT/CN2003/000781 priority Critical patent/WO2005027431A1/fr
Priority to AU2003266485A priority patent/AU2003266485A1/en
Priority to CNB038266962A priority patent/CN100459565C/zh
Publication of WO2005027431A1 publication Critical patent/WO2005027431A1/fr

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Classifications

    • 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

Definitions

  • the present invention relates to a wireless access for performing load adjustment and rate negotiation in a third-generation (3G) mobile communication system UMTS (Universal Mobile Telecommunication System, Universal Mobile Telecommunication System) according to the wireless load situation of a cell and the requested service access priority.
  • 3G third-generation
  • UMTS Universal Mobile Telecommunication System, Universal Mobile Telecommunication System
  • Control Method According to the situation of different service loads in the cell load, the method can flexibly adjust the cell load service according to the strategy of giving low priority service to the high priority service, and can adjust the access service.
  • the transmission rate maximizes the number of high-priority and real-time services in the cell and meets the system requirements. Background technique
  • a WCDMA system is an interference-limited system, and its cell capacity cannot be reflected by the number of call connections at all. Whether a call can be accessed is determined based on whether all existing calls in the cell can maintain the required signal-to-noise ratio (SIR) after accessing the call.
  • SIR value is the ratio of the received power to the interference level. It is closely related to the power control mechanism and the distance between the calling user and the base station. Because the transmission power of each base station is limited, the closer the calling user is to the base station, the smaller the transmission power required by the base station, and the greater the number of accessible users.
  • the power control used in UMTS enables the receiver to obtain appropriate performance indicators by adjusting the SIR, such as the block error rate (BLER) and bit error rate (BER).
  • BLER block error rate
  • BER bit error rate
  • the request is accessed normally, and other users in the cell return to a balanced state under power control due to interference changes;
  • the service is accessed incorrectly, and some users in the cell lose calls due to interference changes that cannot return to a balanced state under power control. Mainly because the interference level is too high and the transmission power is limited, the SIR cannot reach the minimum SIR level required by some services.
  • the wireless access control method is only accessed when the calling user can access normally and other users can reach a balanced state.
  • this ideal situation is possible only if accurate information is obtained for all calling users' propagation channels.
  • a more practical method is to decide whether to access the calling user based on some information obtained in the cell.
  • wireless access control basically adopts the following methods.
  • This method is also an ideal access control method. In this method, call users request access first, and test whether the SIR of all users can reach a balanced state to decide whether to access the call request. This method is not applicable in real-time systems, because it will encounter severe convergence problems when testing whether the user reaches an equilibrium state, and it is impossible to evaluate the convergence of non-real-time users.
  • Power-based access control method This method controls the access of calling users based on the relationship between capacity and power limitation in a CDMA system.
  • the transmission power of the base station is limited, and the access control method will determine whether to access the call based on whether the required transmission power of the call will cause the transmission power of the base station to exceed the total transmission power limit.
  • Interference-based access control method To avoid manual intervention during uplink access control The machine frequently reports the power level to the base station, and the base station can evaluate the current cell load by measuring the current interference level, and determine whether the call should be accessed based on the level of noise caused by the user accessing the call.
  • the interference-based access control method of the access control methods discussed above is generally used in the uplink, and the power-based access control method is used in the downlink.
  • the access control method separately evaluates the increase in load caused by access to new calls or changes in wireless access bearers on the uplink and downlink.
  • the new access request can be granted access only when the uplink and downlink access criteria are met at the same time.
  • step SP102 the wireless access control method detects whether there is an overload warning, and if there is a wireless overload warning, the processing flow proceeds to step SP108, the new request is rejected, and the process ends.
  • step SP102 If it is determined in step SP102 that there is no wireless overload warning, then in step SP103, it is detected whether the uplink interference exceeds the threshold after accessing the request, and it is determined whether to receive an uplink service request. If it is determined that the uplink service request cannot be received, the processing flow proceeds to step SP108, the new request is rejected, and the processing ends.
  • step SP104 it is detected whether the downlink transmission power is greater than the total transmission power, and it is determined whether to receive a downlink real-time service request. If it is determined that the downlink real-time service request cannot be received, the processing flow proceeds to step SP108, the new request is rejected, and the process ends. If it is determined in step SP104 that the downlink transmission power is not greater than the total transmission power, then in step SP105, the base station hardware resources are detected to determine whether the base station hardware is overloaded. If the base station hardware is already overloaded, the processing flow proceeds to step SP108, the new request is rejected and the processing ends.
  • step SP105 If it is determined in step SP105 that the hardware resources of the base station are sufficient, then 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 processing flow proceeds to step SP108, the new request is rejected and the process ends.
  • step SP106 If it is determined in step SP106 that a channel code can be allocated for the new access request, the processing flow proceeds to step SP107.
  • step SP107 after all the above tests are passed, the request is accessed.
  • the present invention proposes a wireless access control method based on multi-service, multi-priority, and rate negotiation in UMTS.
  • a wireless access control method based on multi-service, multi-priority, and transmission rate negotiation in a UMTS system is provided, which is characterized by including the following steps: a) Setting a new access request according to the QoS of a multi-service request Priority); b) calculating the total load of all services including the new access request; c) detecting whether there is a wireless overload warning in the cell according to the total load calculated in step b); d) if If a wireless overload warning is detected in step c), the transmission rate of services having a lower priority than the new access request priority is reduced to reduce the total load level, and the process returns to step b); e) If in step c) No wireless overload warning is detected, then access the new access Request.
  • the wireless overload warning is determined by the load control unit as a "pre-overload” state and a “overload,” state according to the current load state and the capacity of the cell. If the wireless overload warning detected in step d) is the "overload” state, Then the new access request is not accessed.
  • the cell load service in the case of different service loads in the root cell load, in the case of the cell radio load overload, is flexibly adjusted according to the strategy of giving low priority service to high priority service And can adjust the transmission rate of access services, maximize the number of high-priority and real-time services in the cell, so as to meet the system requirements.
  • FIG. 1 shows a flowchart of a conventional wireless access control method
  • FIG. 2 shows a flowchart of a wireless access control method based on multi-service, multi-priority, and transmission rate negotiation in a UMTS system according to the present invention.
  • QoS Quality of Service
  • the basic idea of the present invention is that high-priority users enjoy higher rights than low-priority users when accessing, and low-priority users are willing to sacrifice (reduce) their own access data transmission rate to reduce when congested Load level, allowing high-priority users to access. If the low-priority users do not have real-time QoS requirements, when the congestion reaches a certain level, the low-priority users may even be suspended, so that the priorities are high and real The number of time-sensitive access users reaches the maximum. When the load on the cell is reduced, users with low priority and low real-time requirements will be allowed to retransmit data and gradually increase their rate to reach the requested maximum transmission rate.
  • Table 1 shows the priorities defined according to the QoS classification of different service users. Priority defined by QoS classification
  • category 3 can be further subdivided into n categories according to the "Traffic handling priority" in the RAB (radio access bearer) attribute.
  • FIG. 2 shows a flowchart of a wireless access control method based on multi-service, multi-priority, and transmission rate negotiation in a UMTS system according to the present invention.
  • step SP1 when a new call request, a handover request, or a transmission channel change is received on the carrier frequency C1, the user request priority class is set to Q according to the RAB attribute according to the classification in Table 1.
  • the service is a composite service (multiple service combinations)
  • P-4, i 3.
  • P represents the lowest allowed priority service level
  • i represents the adjustable transmission rate level of the service is 3.
  • the adjustable transmission rates are 128kps, 64kbps, 28.8kbps, and 384kbps, 128kbps, 64kbps.
  • the minimum transmission rates are 28.8kbps and 64kbps.
  • step SP2 the total load of the uplink and downlink with priorities from 1 to P in the current cell is calculated according to the formula described below, and all services with a priority greater than P are suspended or released during overload.
  • the uplink is calculated based on uplink interference
  • the downlink is calculated based on transmit power.
  • Lm ⁇ p and L DL P are all uplink and downlink service loads with priority p, and L UL and L DL are the total uplink and downlink load of the cell.
  • step SP3 it is detected whether the current cell has an overload warning from the "Load Control (LC)" unit. If an overload warning occurs in the uplink and downlink, it enters the priority-based transmission rate negotiation section (step SP4 ⁇ SP5, SP51 ⁇ 54 and SP20), if no overload warning appears, then enter the normal access load detection section (steps SP6, SP71-SP72, SP81-SP85, SP9, and SP11-SP14).
  • LC Local Control
  • step SP3 if an overload warning is detected in step SP3, the state of wireless overload is detected in step SP4.
  • step SP4 If it is determined in step SP4 that the "overload” state appears, it indicates that the cell is overloaded and is not suitable for accessing any requests.
  • the cell load is adjusted by the "Load Control (LC)" to return to the normal state. At this time, processing The flow advances to step SP20, rejects the new request and ends the entire flow.
  • LC Local Control
  • step SP4 when the "pre-overload" status appears, it indicates that the cell load may be overloaded at this time, and can be adjusted according to the priority of the access request, allowing high-priority service access and preventing low-priority user access. At this time, the processing flow proceeds to step SP5.
  • step SP5 If it is determined in step SP5 that the access request priority Q is not equal to 4, the processing flow proceeds to step SP51.
  • step SP51 it is determined whether the priority of the access request is 4> Q ⁇ 3. If it is determined that the priority of the access request is 4> Q ⁇ 3, the service request is an "interaction" type service, and the processing flow proceeds to step SP53. If it is determined in step SP51 that the access request priority Q ⁇ 3, the service is a real-time service with a higher priority, and the processing flow proceeds to step SP52.
  • the rate Rj is simultaneously reduced to the next level
  • step SP52 after determining the access request priority Q ⁇ 3, the service is a real-time service with a higher priority.
  • the priority service can be accessed and then enter the normal access load check ⁇ ⁇ Test section.
  • step SP3 If it is determined in step SP3 that the cell has no overload warning, it indicates that the current cell is in a normal load state. The processing flow proceeds to step SP6.
  • the cell When the cell is in a normal load state, it is necessary to check whether the cell can still maintain a normal load balancing state after the access service request. Whether the new load is connected depends on the type of load.
  • the real-time service and non-real-time service have different measurement standards and methods. If the service is a composite service (multiple service combinations), both real-time and non-real-time are checked. Only when all composite services pass the check can they be accessed.
  • step SP6 it is determined whether the type of the RAB is a real-time load type or a non-real-time load type. If it is a real-time load type, the processing flow proceeds to step SF71. If it is a non-real-time load type, the processing flow proceeds to step SP72. The following specifically describes these two business situations.
  • step SP71 For the real-time service, in step SP71, according to the load condition of each carrier frequency and the service classification situation, and the specific requirements of the operator, search and select the appropriate carrier frequency Cm. For example, a new service request can be connected to a lightly loaded cell according to the "balance load” algorithm. According to the "service classification” algorithm, services with higher transmission rate requirements and services with lower transmission rate requirements can be respectively connected to cells with different carrier frequencies.
  • step SP81 the uplink load of the newly requested real-time service is checked to determine whether to receive an uplink real-time service request. If the uplink traffic exceeds the load threshold at this time, the processing flow proceeds to step SP85, the request is rejected and the entire flow ends.
  • step SP81 If it is determined in step SP81 that the uplink real-time service request can be received, the processing flow proceeds to step SP83.
  • step SP83 the downlink load of the newly requested real-time service is checked to determine whether a downlink real-time service request is received. If the downlink service exceeds the load threshold at this time, the processing flow proceeds to step SP85, the request is rejected and the entire flow is ended. If it is determined in step SP83 that the downlink real-time service request can be received, the processing flow proceeds to step SP9.
  • step SP72 according to the load conditions and service classification conditions of each carrier frequency, and the specific requirements of the operator, search and select the appropriate carrier frequency Cm. For example, a new service request can be connected to a lightly loaded cell according to the "balance load” algorithm. According to the "service classification” algorithm, services with higher transmission rate requirements and services with lower transmission rate requirements can be respectively connected to cells with different carrier frequencies.
  • step SP82 the uplink load of the newly requested non-real-time service is checked to determine whether to receive an uplink non-real-time service request. If the uplink service exceeds the load threshold at this time, the processing flow proceeds to step SP85, the request is rejected and the entire process is ended.
  • step SP82 If it is determined in step SP82 that the uplink non-real-time service request can be received, the processing flow proceeds to step SP84.
  • 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 downlink traffic exceeds the load threshold at this time, the processing flow proceeds to step SP85, the request is rejected and the entire flow ends.
  • step SP84 If it is determined in step SP84 that the downlink non-real-time service request can be received, the processing flow proceeds to step SP9.
  • step SP9 it is detected whether the hardware resources of the base station meet the requirements for accessing the request. If the hardware resources of the base station cannot meet the demand for accessing the new request, Go to step SP20, reject the request and end the whole process.
  • step SP9 If it is determined in step SP9 that the hardware resources of the base station can meet the requirements for accessing the new request, then it is checked in step SP11 whether there is an excess channel code allocation in the cell. If there is no extra channel code assigned to the new request, the processing flow proceeds to step SP20, the request is rejected, and the entire flow ends.
  • the wireless access control method disclosed in the present invention for performing load adjustment and rate negotiation according to the wireless load situation of the cell and the requested service access priority in the third generation (3G) mobile communication system UMTS.
  • the cell load service can be flexibly adjusted according to the strategy of giving priority to low priority services to high priority services, and the access service can be adjusted. Transmission rate, thereby maximizing the number of high-priority and real-time services in the cell and meeting the requirements of the system.

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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

L'invention concerne un procédé permettant de commander un accès hertzien par réglage de la charge et mise en correspondance du débit dans un système universel de communication mobile de troisième génération (UMTS), en fonction de la charge hertzienne de la cellule et de la priorité d'un accès demandé. Lorsque il y a une surcharge hertzienne dans une cellule, les services de chargement dans la cellule sont ajustées d'après les différentes priorités ; le débit de transmission du service d'accès peut être également ajusté. La quantité de priorité élevée et de trafic en temps réel est maximisée de manière à répondre aux exigences du système.
PCT/CN2003/000781 2003-09-16 2003-09-16 Procede permettant de commander un acces hertzien fonde sur une priorite multi-services dans un systeme universel de telecommunication mobile (systeme umts) WO2005027431A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/CN2003/000781 WO2005027431A1 (fr) 2003-09-16 2003-09-16 Procede permettant de commander un acces hertzien fonde sur une priorite multi-services dans un systeme universel de telecommunication mobile (systeme umts)
AU2003266485A AU2003266485A1 (en) 2003-09-16 2003-09-16 A method for controlling a wireless access based on multi-services priority in umts
CNB038266962A CN100459565C (zh) 2003-09-16 2003-09-16 在umts中基于多业务优先级的无线接入控制方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2003/000781 WO2005027431A1 (fr) 2003-09-16 2003-09-16 Procede permettant de commander un acces hertzien fonde sur une priorite multi-services dans un systeme universel de telecommunication mobile (systeme umts)

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WO2005027431A1 true WO2005027431A1 (fr) 2005-03-24

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AU (1) AU2003266485A1 (fr)
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CN101896000A (zh) * 2010-07-22 2010-11-24 中兴通讯股份有限公司 一种对移动终端Wi-Fi应用进行处理的方法和装置
WO2013107365A1 (fr) * 2012-01-17 2013-07-25 电信科学技术研究院 Procédé et appareil de contrôle d'accès
WO2014044033A1 (fr) * 2012-09-24 2014-03-27 华为终端有限公司 Procédé, dispositif et système de planification de trafic en différé

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CN100411477C (zh) * 2004-12-22 2008-08-13 华为技术有限公司 移动通信系统中的接入控制方法
CN101990262A (zh) * 2009-08-05 2011-03-23 北京大学 无线通信网络的接入控制方法、装置及小区基站
CN104427624B (zh) * 2013-08-20 2018-03-23 中国移动通信集团北京有限公司 一种公共网络资源分配方法及系统
CN103442393A (zh) * 2013-09-06 2013-12-11 美商威睿电通公司 延长物联网设备休眠周期的装置和方法

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EP1282993A1 (fr) * 2000-05-17 2003-02-12 QUALCOMM Incorporated Procede et dispositif de modification du debit de transmission de voies de communication
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CN101896000A (zh) * 2010-07-22 2010-11-24 中兴通讯股份有限公司 一种对移动终端Wi-Fi应用进行处理的方法和装置
WO2012009884A1 (fr) * 2010-07-22 2012-01-26 中兴通讯股份有限公司 Procédé et dispositif de traitement d'applications wi-fi (wireless fidelity) de terminaux mobiles
WO2013107365A1 (fr) * 2012-01-17 2013-07-25 电信科学技术研究院 Procédé et appareil de contrôle d'accès
WO2014044033A1 (fr) * 2012-09-24 2014-03-27 华为终端有限公司 Procédé, dispositif et système de planification de trafic en différé

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