WO2007006178A1 - Procédé d’égalisation de charge dans un canal public descendant et un canal commun descendant - Google Patents

Procédé d’égalisation de charge dans un canal public descendant et un canal commun descendant Download PDF

Info

Publication number
WO2007006178A1
WO2007006178A1 PCT/CN2005/001034 CN2005001034W WO2007006178A1 WO 2007006178 A1 WO2007006178 A1 WO 2007006178A1 CN 2005001034 W CN2005001034 W CN 2005001034W WO 2007006178 A1 WO2007006178 A1 WO 2007006178A1
Authority
WO
WIPO (PCT)
Prior art keywords
channel
load
downlink
shared channel
downlink shared
Prior art date
Application number
PCT/CN2005/001034
Other languages
English (en)
Chinese (zh)
Inventor
Xiubin Sha
Jianwu Dou
Original Assignee
Zte Corporation
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 Zte Corporation filed Critical Zte Corporation
Priority to PCT/CN2005/001034 priority Critical patent/WO2007006178A1/fr
Publication of WO2007006178A1 publication Critical patent/WO2007006178A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/08—Load balancing or load distribution
    • H04W28/082—Load balancing or load distribution among bearers or channels

Definitions

  • the present invention relates to a downlink common channel and downlink shared channel bearer service technology in a Wideband Code Division Multiple Access (WCDMA) system, and in particular, to a method for balancing a downlink common channel and a downlink shared channel load.
  • WCDMA Wideband Code Division Multiple Access
  • services can be carried on a common transport channel or a dedicated transport channel, and resource usage and transmission bandwidth of different transport channels are different.
  • resource usage and transmission bandwidth of different transport channels are different.
  • different services need to be carried on different transport channels according to the actual transmission rate and system load.
  • a Forward Access Channel is a downlink common channel that can carry services. Since the transmission bandwidth of FACH is generally small, it is only suitable for transmitting non-real-time services with small data rates or bursty small packet services. Therefore, if the data traffic carried by the FACH is much larger than the FACH transmission bandwidth, the data transmission delay is large, and even the buffer overflows and the data is lost. The network quality of service (QoS) cannot meet the user's requirements.
  • QoS network quality of service
  • the FACH is a common channel, a plurality of user equipments (User Equipments, hereinafter referred to as UEs) can share code resources and shared power resources.
  • UEs User Equipments
  • the FACH fails to access the FACH because other UEs with relatively small data rates are unable to access the FACH due to the UE carrying a large data rate, the FACH system resource utilization will not be optimal.
  • the effective load is not used to control and balance the FACH load, when the data traffic carried by the FACH is far greater than the FACH transmission bandwidth, the data transmission delay will be large, and even the buffer overflow data. Loss, network quality of service (QoS) cannot meet the user's needs; in addition, there may be cases where the FACH accesses a UE with a large data rate and cannot access other UEs with a relatively small data rate.
  • QoS network quality of service
  • the technical problem to be solved by the present invention is to provide a method for balancing the downlink common channel and the downlink shared channel load. To improve system resource utilization and network service quality.
  • the present invention provides the following solutions:
  • a method for balancing downlink common channel load includes the following steps:
  • Step 101 Set a reference rate for measuring the degree of activity of the user equipment in the current access state of the cell for the decision decision;
  • Step 102 Determine whether the data rate requested by the user equipment is greater than the data rate actually transmitted by the user equipment. If it is greater than, set the user activity value to 1. Otherwise, the user activity is: min (1, the data rate actually transmitted by the user equipment/ Base rate);
  • Step 103 Calculate a maximum transmission rate that can be carried by the downlink common channel.
  • Step 104 Calculate a decision threshold of the downlink common channel: a maximum transmission rate/reference rate that the downlink common channel can bear;
  • Step 105 Determine whether the sum of user activities carried by the downlink common channel is greater than or equal to a downlink common channel decision threshold. If yes, the downlink common channel performs a balanced load operation.
  • the method for balancing a downlink common channel load according to the present invention, wherein the downlink public The channel is a forward access channel.
  • step 101 when the decision in the step 101 is the admission control of the downlink common channel, in step 105, the sum of user activities carried by the downlink common channel is less than When the downlink common channel decides the threshold, the accepting operation is performed.
  • the method for balancing the downlink common channel load according to the present invention, wherein, when the decision in the step 101 is the load control of the downlink common channel, in the step 105, the sum of user activities carried by the downlink common channel is greater than When the downlink common channel decision threshold is equal to or equal to, the load control operation is performed.
  • the method for balancing the downlink common channel load according to the present invention, wherein, when the decision in the step 101 is that the load is equalized to the downlink common channel, in the step 105, the sum of user activities carried by the downlink common channel is greater than When the downlink common channel decision threshold is equal to or equal to, the load balancing operation is performed.
  • the method for balancing the downlink common channel load may further include The following steps:
  • Step 201 Set a sliding time window for counting user device activity information
  • Step 202 The public media access control layer records the capacity values of the first and last requests of the dedicated media access control layer in the sliding time window;
  • Step 203 The public medium access control layer records the sum of the number of bits of the dedicated media access control layer service packet data unit received in the sliding time window;
  • Step 204 Determine whether the last requested capacity value of the dedicated media access control layer in the sliding time window is greater than the capacity value of the first request. If yes, the data rate requested by the user equipment is greater than the data rate actually transmitted by the user equipment. Where the user device actually transmits The data rate of the input is: The sum of the number of bits of the dedicated media access control layer service packet data unit received in the sliding window, divided by the sliding time window.
  • a maximum transmission rate that can be carried by the common channel is a transmission bandwidth of the auxiliary common control physical channel.
  • the method for balancing the downlink common channel load wherein the maximum transmission rate that can be carried by the common channel is min (the rate corresponding to the merged set of the maximum common transmission format of the common common control physical channel, and the spreading factor of the common common control physical channel) Corresponding maximum rate).
  • a method for balancing downlink shared channel load includes the following steps:
  • Step 301 Set a reference rate for measuring the degree of activity of the user equipment in the current access state of the cell for the decision decision;
  • Step 302 Determine whether the data rate requested by the user equipment is greater than the data rate actually transmitted by the user equipment. If it is greater than, set the user activity value to 1. Otherwise, the user activity is: min (1, the data rate actually transmitted by the user equipment/ Base rate);
  • Step 303 Calculate a maximum transmission rate that the downlink shared channel can bear
  • Step 304 Calculate a decision threshold of the downlink shared channel, where the threshold of the downlink shared channel is: a maximum transmission rate/reference rate that the downlink shared channel can bear;
  • Step 305 Determine whether the sum of user activities carried by the downlink shared channel is greater than or equal to a downlink shared channel decision threshold. If yes, the downlink shared channel performs a balanced load operation.
  • the method for balancing downlink shared channel load according to the present invention wherein the shared channel is a high rate downlink shared channel.
  • step 305 the sum of user activities carried by the downlink shared channel is less than When the downlink shared channel decides the threshold, Line acceptance operation.
  • step 305 the sum of user activities carried by the downlink shared channel is greater than
  • the load control operation is performed.
  • step 305 the sum of user activities carried by the downlink shared channel is greater than
  • the load balancing operation is performed.
  • the method for balancing the downlink common channel and the downlink shared channel load ensures the FACH reasonable bearer system by comprehensively considering the data traffic of the FACH bearer and the number of users carried, according to the admission judgment of the pre-FACH bearer load.
  • the load increases the utilization of the bandwidth resources of the wireless communication system and ensures the stable operation of the system.
  • FIG. 1 is a flowchart of a method for balancing a downlink common channel load according to the present invention
  • FIG. 2 is a schematic diagram of a bearer service of a forward access channel of a medium access control layer in a terrestrial radio access network of a universal wireless communication system
  • FIG. 3 is a schematic diagram of message interaction between a public media access control layer and a dedicated media access control layer
  • Figure 5 is a logical channel, a transport channel, and a physical channel when a service is established on a forward access channel. Schematic diagram of the mapping relationship;
  • FIG. 6 is a flow chart of a method for balancing a downlink shared channel load according to the present invention.
  • the present invention proposes a method for balancing the downlink common channel and the downlink shared channel load for the characteristics of the downlink common channel and the downlink shared channel and the characteristics of the downlink common channel and the downlink shared channel bearer service.
  • the load of the current downlink common channel and the downlink shared channel is balanced and controlled by considering the data traffic carried by the downlink common channel and the downlink shared channel and the number of UEs carried on the downlink common channel and the downlink shared channel.
  • FIG. 1 it is a flowchart of a method for balancing a downlink common channel load according to the present invention.
  • a reference rate for measuring the degree of activeness of the user equipment in the current access state of the cell is set (step 101);
  • the decision decision here may be admission control, load control, and load balancing of the forward access channel
  • the user activity value is set to 1, otherwise, the user activity is: min (1, the data rate/reference actually transmitted by the user equipment. Rate) (step 102);
  • the decision threshold of the downlink common channel is calculated, and the decision threshold of the downlink common channel is: the maximum transmission rate/reference rate that the downlink common channel can carry (step 104):
  • the forward access channel can accept new services (step 105).
  • step 105 when the decision in the step 101 is decided as accepting the forward access channel In the control, in step 105, when the sum of the user activities carried by the forward access channel is smaller than the forward access channel decision threshold, the receiving operation is performed.
  • step 105 when the sum of user activities carried by the forward access channel is greater than or equal to the forward access channel decision threshold. , perform load control operations.
  • step 105 When the decision in step 101 is determined to be load balancing on the forward access channel, in step 105, when the sum of user activities carried by the forward access channel is greater than or equal to the forward access channel decision threshold. , Perform load balancing operations.
  • a packet data unit (DCCH/DTCH Packet Data Unit) derived from a Dedicated Control Channel (DCCH)/Dedicated Traffic Channel (DTCH) is used.
  • the service PDU is first stored in the Medium Access Control Dedicated (MAC-d) buffer; the service PDU stored in the MAC-d buffer is then accessed through the Public Access Control Layer (Medium Access).
  • Control Common hereinafter referred to as MAC-c
  • MAC-c Medium Access Control Dedicated
  • MAC-c MAC-d flow control mechanism
  • the service PDU stored in the MAC-c buffer is then MAC-c plus MAC header (such as UE identification) After that, it is placed on the FACH transmission channel for transmission according to a certain scheduling principle.
  • the MAC-d first sends a FACH CAPACITY REQUEST request to the MAC-c to request the MAC-c to allocate resources, the requested
  • the quota is the total number of bits of the service PDU in the MAC-d buffer (UserBufferSize); the MAC-c allocates the capacity quota for the MAC-d according to the capacity of the MAC-d request and the capacity of the MAC-c idle buffer and passes the FACH flow control frame (FACH FLOW) CONTROL) is sent to the MAC-d; the MAC-d sends the service PDU in the corresponding MAC-d to the MAC-c through the FACH data frame according to the quota allocated by the MAC-c; The MAC-d sends the traffic PDU data frame also carries the new traffic request information of the MAC-d (the requested amount is the new UserBufferSize in the MAC-d cache), and the MAC-
  • the base rate (BaseRate) of the UE activity level (Active) in the CELL-FACH state in order to compare the data rate requested by the UE and the data rate actually transmitted by the UE, first, it is required to count the data rate requested by the UE and the data rate actually transmitted by the UE.
  • Statistics The data rate (ReqRate) that the UE requests to transmit refers to the data rate at which the DCCH/DTCH requests MAC-d transmission, that is, the data rate at which the DCCH/DTCH is sent to the MAC-d. The measurement is performed at the MAC-d.
  • the statistics of the actual data transmitted by the UE (ActRate) refers to the rate at which the MAC-c actually receives the MAC-d service PDU, and the measurement is performed at the MAC-c.
  • BaseRate calculates the decision threshold of the forward access channel, which is the maximum transmission rate that can be carried; the maximum transmission rate that can be carried by the forward access channel is the transmission bandwidth of the auxiliary common control physical channel, that is, min (auxiliary public) Controlling the rate corresponding to the merged set of the maximum transmission format of the physical channel, and the maximum rate corresponding to the spreading factor of the common common control physical channel).
  • the forward access channel decision threshold For the admission decision of the forward access channel, if the judgment result is yes, the forward access channel can accept the new service. Otherwise, the forward access channel refuses to accept new services.
  • This acceptance decision (shown in step 5 of Figure 1) is also done in the MAC-c.
  • the load control operation is performed.
  • the load balancing operation is performed.
  • MAC-d may occur.
  • the statistical result cannot be notified to MAC-c.
  • the data rate (ReqRate) requested by the UE is only used for size comparison with the data rate (ActRate) actually transmitted by the UE. Therefore, as long as the difference between the two is known (ReqRate - ActRate) Yes.
  • the calculation of UE activity can also be calculated based on the information contained in the capacity request frame and the FACH data frame of the MAC-d. That is, when the MAC-d and the MAC-c are not in the same radio network controller, the forward access channel admission control method of the present invention specifically includes the following steps:
  • the sliding time window (Slide_Window_Size) of the UE activity information is counted (step 202); here, the sliding time window is a time period set for monitoring the data traffic condition.
  • the MAC-c records the sum of the number of bits of the MAC-d service PDU (TotalBitNum) received in the sliding time window (Slide_Window_Size) (step 204);
  • step 205 the activity of the UE is calculated (step 205):
  • a plurality of secondary common control physical channels may be configured in the same cell, and which SCCPCH is selected by the HE is determined.
  • the FACH of multiple bearer services can be mapped on the same SCCPCH, that is, the FACHs of multiple bearer services share the transmission bandwidth of the same SCCPCH.
  • CCCH and CTCH in the figure refer to a common control channel and a public service channel. Since the data rate of the bearer is small, it is not considered when calculating UE activity and FACH activity.
  • the maximum transmission speed (FachMaxRate) of the FACH carried on the same SCCPCH, that is, the transmission bandwidth of the SCCPCH is calculated as follows:
  • minOSCCPCH max the corresponding rate, the maximum rate corresponding to the spreading factor of the SCCPCH
  • TFCS refers to a Transport Format Combination Set on the SCCPCH (step 206);
  • the load balancing operation is performed (step 208).
  • FACH admission control if the FACH current load is greater than or equal to the FACH admission threshold, the FACH refuses to accept the new service; otherwise, the FACH can accept the new service; for the FACH load control, if the FACH current load is greater than or equal to the FACH load control Threshold, then FACH performs load control operations;
  • the FACH performs load balancing operations.
  • the “base rate of UE activity in the CELL-FACH state in the FACH admission decision” is greater than the activity level of the UE in the CELL-FACH state in the FACH load balancing decision.
  • (Active) Base Rate "The FACH load balancing decision measures the UE Activeness (Active) base rate in the CELL-FACH state” is greater than the "Activeness of the UE in the CELL-FACH state when the FACH meets the load control condition” .
  • FIG. 6 is a flow chart of a method for balancing a downlink shared channel load according to the present invention.
  • step 301 setting a reference rate for measuring the activity level of the user equipment in the current access state of the cell for the decision decision (step 301); then, determining whether the data rate requested by the user equipment is greater than the data rate actually transmitted by the user equipment, if it is greater than, setting The user activity value is 1, otherwise, the user activity is: min (1, the data rate/reference rate actually transmitted by the user equipment) (step 302); calculating the maximum transmission rate that the downlink shared channel can bear (step 303); calculating the downlink sharing The decision threshold of the channel, where the decision threshold of the downlink shared channel is: The maximum transmission rate/reference rate that can be carried by the row shared channel (step 304); determining whether the sum of the user activities carried by the downlink shared channel is greater than or equal to the downlink shared channel decision threshold, and if so, performing the balanced load operation on the downlink shared channel (step 305).
  • the balanced load operation may be an admission control operation, or a load control operation, or a load balancing operation.
  • HSDPA High Rate Downlink Packet Access
  • MAX_HS_RATE the HSDPA maximum throughput for each cell can be obtained in advance.
  • the HSDPA user equipment UE current activity can be calculated according to the above method, HSDPA user
  • the current activity of the device is the current HSDPA load of the cell in the decision of HSDPA (such as admission, load control, load balancing, etc.); at the same time, the cell can be calculated for HSDPA (such as admission, load control, load balancing).
  • the threshold of the decision ie, HSDPA maximum activity - HS - BaseRate
  • the threshold of the HSDPA decision such as admission, load control, load balancing, etc.
  • the concept of user equipment activity and forward access channel activity referred to in the present invention is a method of measuring the downlink common channel load. It can be used for any operations related to the downlink common channel, such as forward access channel load control, load balancing, and the like. It is also possible to perform the admission control of the downlink shared channel such as the HS-DSCH by means of measuring the load of the downlink shared channel of other bearer services such as the High Speed Downlink Shared Channel (HS-DSCH). Load control, load balancing, etc. to improve the wireless communication system The utilization of wide resources and the stable operation of the system.
  • HS-DSCH High Speed Downlink Shared Channel
  • the method for balancing the downlink common channel and the downlink shared channel load according to the present invention is not limited to the applications listed in the specification and the embodiment, and can be fully applied to various fields suitable for the present invention, and is familiar with the field.
  • the present invention is not limited to the specific details, representative devices, without departing from the spirit and scope of the general concept as defined by the appended claims and the appended claims. And the illustrated examples shown and described herein.

Landscapes

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

Abstract

L’invention concerne un procédé d’égalisation de charge dans un canal public descendant et un canal commun descendant, comprenant les étapes suivantes : (101) définition du débit de référence relatif au degré d’activité du dispositif utilisateur dans l’état d’accès actuel de la sous-zone ; (102) détermination du fait que le débit de données demandé par le dispositif utilisateur est ou non supérieur au débit de données effectivement transmis par le dispositif utilisateur ; si c’est le cas, définition de la valeur active de l’utilisateur sur 1 ; dans le cas contraire, définition de l’activité utilisateur par la formule min(1, débit des données effectivement transmises par le dispositif utilisateur/débit de référence) ; (103) calcul du débit de transmission maximum transporté sur le canal public descendant ; (104) calcul du seuil d’accord et du ratio du débit de transmission maximum transporté sur le canal public descendant par rapport au débit de référence ; (105) détermination du fait que la somme de l’activité utilisateur transportée sur le canal public descendant est ou non supérieure ou égale au seuil d’accord du canal public descendant ; si c’est le cas, égalisation de la charge.
PCT/CN2005/001034 2005-07-13 2005-07-13 Procédé d’égalisation de charge dans un canal public descendant et un canal commun descendant WO2007006178A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2005/001034 WO2007006178A1 (fr) 2005-07-13 2005-07-13 Procédé d’égalisation de charge dans un canal public descendant et un canal commun descendant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2005/001034 WO2007006178A1 (fr) 2005-07-13 2005-07-13 Procédé d’égalisation de charge dans un canal public descendant et un canal commun descendant

Publications (1)

Publication Number Publication Date
WO2007006178A1 true WO2007006178A1 (fr) 2007-01-18

Family

ID=37636728

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2005/001034 WO2007006178A1 (fr) 2005-07-13 2005-07-13 Procédé d’égalisation de charge dans un canal public descendant et un canal commun descendant

Country Status (1)

Country Link
WO (1) WO2007006178A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010063186A1 (fr) * 2008-12-01 2010-06-10 中兴通讯股份有限公司 Procédé et système pour mettre en oeuvre un canal de relais et des noeuds périphériques

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6694147B1 (en) * 2000-09-15 2004-02-17 Flarion Technologies, Inc. Methods and apparatus for transmitting information between a basestation and multiple mobile stations
CN1523835A (zh) * 2003-09-05 2004-08-25 中兴通讯股份有限公司 Gprs系统中的一种下行数据传输重指派方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6694147B1 (en) * 2000-09-15 2004-02-17 Flarion Technologies, Inc. Methods and apparatus for transmitting information between a basestation and multiple mobile stations
CN1523835A (zh) * 2003-09-05 2004-08-25 中兴通讯股份有限公司 Gprs系统中的一种下行数据传输重指派方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010063186A1 (fr) * 2008-12-01 2010-06-10 中兴通讯股份有限公司 Procédé et système pour mettre en oeuvre un canal de relais et des noeuds périphériques
US8699336B2 (en) 2008-12-01 2014-04-15 Zte Corporation Method and system for implementing relay channel, and edge node

Similar Documents

Publication Publication Date Title
JP4242858B2 (ja) アップリンクパケット伝送におけるソフトハンドオーバー端末のためのスケジューリング方法及び装置
US8755270B2 (en) Congestion/load indication for high speed packet access
JP5091319B2 (ja) 無線ネットワークにおけるスケジューリング
US9204333B2 (en) Partitioning entity and method for partitioning capacity
US6947750B2 (en) Method and system for service rate allocation, traffic learning process, and QoS provisioning measurement of traffic flows
JP4971444B2 (ja) 高速ダウンリンクパケットアクセス（ｈｓｄｐａ）チャネルのカバレージ向上
JP4939611B2 (ja) 拡張専用チャネル・トラフィックに対して有用な電力過負荷制御方法
RU2335863C2 (ru) Способ управления скоростью передачи, мобильная станция и базовая радиостанция
WO2008022588A1 (fr) Procédé permettant de réguler le flux pour une interface iub, appareil et station de base
WO2012007890A1 (fr) Appareil et procédé facilitant le dimensionnement de ressources radio pour des services de communication
EP1604498A2 (fr) Controle d'admission et affectation des ressources dans un systeme de communication prenant en charge des flux d'application presentant des exigences de qualite de service
JP2009517968A (ja) 高速ダウンリンクにおける低ビットレートユーザのフロー制御
JP2010502056A (ja) 無線ネットワーク内でアップリンクスケジューリング要求および緊急状態を報告するための方法およびデバイス
TWI392261B (zh) 無線資源分配的方法及其相關通訊裝置
JP5123317B2 (ja) 帯域幅を使い切るためのｗｌａｎにおけるエアタイム割り当ての再計算
WO2007003122A1 (fr) Méthode d’allocation de ressource de canal de trafic aval d’hsdpa multiporteuse et méthode de transmission de données
JPWO2006030914A1 (ja) 移動通信方法、基地局及び無線回線制御局
CA2877264A1 (fr) Procede et dispositif de commande d'admission
US20130201832A1 (en) Method and apparatus for controlling traffic transfer rate based on cell capacity in mobile communication system
WO2009074095A1 (fr) Procédé, système et appareil d'ajustement de la qualité du service aux utilisateurs
US20150341824A1 (en) Method and apparatus for admission control of wireless communications network
WO2005099296A1 (fr) Appareil de station de base radio et méthode de contrôle de transfert des données
US20070258364A1 (en) Resource control for scheduled and non-scheduled traffic
US20100002645A1 (en) Method of Flow Control between Radio Network Controller and Base Station
US11115857B2 (en) Bandwidth sentinel

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

WWW Wipo information: withdrawn in national office

Country of ref document: DE

122 Ep: pct application non-entry in european phase

Ref document number: 05763420

Country of ref document: EP

Kind code of ref document: A1