WO2004107793A1 - Procede conferant un acces prioritaire a un utilisateur de service d'attribution de voies avec fixation de priorites d'acces - Google Patents

Procede conferant un acces prioritaire a un utilisateur de service d'attribution de voies avec fixation de priorites d'acces Download PDF

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Publication number
WO2004107793A1
WO2004107793A1 PCT/CN2004/000559 CN2004000559W WO2004107793A1 WO 2004107793 A1 WO2004107793 A1 WO 2004107793A1 CN 2004000559 W CN2004000559 W CN 2004000559W WO 2004107793 A1 WO2004107793 A1 WO 2004107793A1
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WO
WIPO (PCT)
Prior art keywords
user
resources
paca
users
switching center
Prior art date
Application number
PCT/CN2004/000559
Other languages
English (en)
Chinese (zh)
Inventor
Yunfei Li
Original Assignee
Huawei Technologies 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 Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2004107793A1 publication Critical patent/WO2004107793A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • the present invention relates to the field of wireless communications, and in particular to a method for achieving preferential access and channel assignment.
  • Mobile phone users need to occupy radio channel resources and terrestrial circuit resources when they are calling or calling.
  • the ground circuit resources are allocated by the mobile switching center (MSC), and the radio channel resources are allocated by the base station control system (BSC).
  • the resource, 'Call could not be established.
  • the base station control system checks the radio channel resource status, and constructs a CM Service Request (CM Service Req) message to notify the mobile switching center MSC.
  • the mobile switching center MSC checks the message parameters, finds that the wireless channel resources are insufficient, and the user signs up for the PACA service, constructs a PACA Command message to notify the base station control system BSC, and at the same time, the MSC marks the user.
  • the base station control system BSC queues the PACA users.
  • the BSC checks the status of the wireless channel resources. When a channel is available, it finds the highest level PACA user from the queue, and sends a message to notify the mobile phone to resend the initial call request for access.
  • the base station control system BSC finds that the PACA user queue has changed, it needs to notify the mobile switching center MSC to cancel the marking of the user.
  • the mobile switching center MSC finds the marked subscriber information (status (State or location) has changed, the base station control system BSC must also be notified to delete the user from the queue.
  • the PACA user sends an initial call.
  • the process is shown in Figure 1:
  • the base station control system BSC checks the radio channel resource conditions, sets the corresponding radio environment and resource parameters (Radio Environment and Resources), and notifies the mobile switching center MSC user via a CM service request message (CM Service Req) Require access
  • the mobile switching center MSC checks the radio environment and resources parameters (Radio Environment and Resources), finds that there are no available radio channel resources, and the user signs a PACA service, and sends a PACA Command message to notify the base station control system that the BSC user is a PACA user;
  • Radio Environment and Resources Radio Environment and Resources
  • the base station control system BSC After receiving the PACA Command message, the base station control system BSC queues the PACA users and then notifies the mobile switching center MSC through the PACA Command ACK message; After receiving the PACA Command ACK message, the mobile switching center MSC sets a flag to record that the PACA user is already at the base station. The control system BSC queues;
  • the base station control system BSC finds that there are free wireless channel resources, it removes high-level PACA users from the queue, and notifies the users to resend the initial call request to access.
  • the base station control system BSC initiates the user PACA status change process as shown in Figure 2:
  • the base station control system BSC finds that the user status has changed, such as the user terminates the call or the BSC fails, the base station control system BSC deletes the user from the queue and sends a PACA Update The message informs the mobile switching center MSC;
  • the mobile switching center MSC After receiving the PACA Update message, the mobile switching center MSC cancels the mark on the user.
  • the mobile switching center MSC initiates the user PACA status change process as shown in Figure 3: When the MSC finds that the marked user's PACA information has changed, The mobile switching center MSC notifies the base station control system BSC to modify the user's PACA information;
  • the base station control system BSC After receiving the message, the base station control system BSC deletes the user from the queue and then acknowledges the message.
  • PACA users queue in the base station control system BSC, wait for other users to end the call, release resources, and access speed is slow;
  • the present invention provides a method for preferential access by PACA users, which ensures that PACA users can access in time when system resources are insufficient.
  • a method for preferential access of a user with priority access and channel assignment (PACA Priority Access and Channel Assignment). The method includes the following steps:
  • the mobile switching center When a PACA user requests access, determine whether the current wireless channel resources and ground circuit resources are sufficient. If so, the mobile switching center directly informs the base station control system to perform wireless channel resource assignment, so that the PACA users can directly access; otherwise, After calling links of low-level users, the mobile switching center then notifies the base station control system to perform wireless channel resource assignment, so that the PACA users occupy the resources released by the demolished users to preferentially access.
  • the mobile switching center or the base station control system removes the links of the low-level users; when the ground circuit resources are insufficient, the mobile switching center removes the links of the low-level users.
  • the wireless channel resources are insufficient, the links of the low-level users in the same cell as the PACA users are removed; when the ground circuit resources are insufficient, the links of the low-level users in the same base station control system as the PACA users are removed, or they are removed. Links to lower-level users in the same cell as the PACA users.
  • the determination is performed by the mobile switching center; if the mobile switching center receives the service request from the base station control system, Including the wireless environment and resource parameters, the base station control system determines whether the wireless resources are sufficient, and the mobile switching center determines whether the ground circuit resources are sufficient.
  • the method before removing the call link of the lower-level user, the method further includes: setting a service prohibition flag by the mobile switching center; and after the PACA user uses the resources released by the demolished user to preferentially access, the method further includes canceling the service by the mobile switching center. Prohibition sign.
  • the mobile switching center sets a service prohibition flag and rejects the request for access by low-level users in the same cell as the PACA user; if no ground circuit is available Resources, the mobile switching center sets a service prohibition flag and rejects access requests from low-level users of the same base station control system as the PACA user.
  • the grading of the user's call is to divide the level of the calling user from high to low: emergency calls by PACA users, emergency calls by ordinary users, conference calls with PACA users, and PACA user participation Ordinary calls, conference calls made by ordinary users, ordinary calls made by ordinary users.
  • the PACA user is a calling user or a called user.
  • the current wireless channel resources and ground circuit resources are the current wireless channel resources and ground circuit resources of the calling user, or the current wireless channel resources and ground circuit resources of the called user.
  • the call link of the low-level user is a conference call link made by an ordinary user or an ordinary call link made by an ordinary user.
  • the current wireless channel resources and ground circuit resources include reserved resources and non-reserved resources.
  • the unreserved resources are preferentially selected.
  • FIG. 1 is a signal flow chart between a BSC and an MSC when a PACA user sends an initial call in the prior art
  • FIG. 2 is a flowchart of a state change of a PACA user initiated by a BSC in the prior art
  • FIG. 3 is a flowchart of a state change of a PACA user initiated by an MSC in the prior art
  • FIG. 4 is one of the processes of a priority access method of the present invention
  • FIG. 5 is the second flow of the priority access method of the present invention. Mode of Carrying Out the Invention
  • the present invention adopts a method of forcibly removing a common call connection to realize access to a PACA user when resources are insufficient: that is, when a PACA user requests access and resources are insufficient, the ongoing call of a lower-level user is forcibly released, so that the PACA user occupies the released resources. Make access.
  • the mobile switching center MSC ranks each call according to the information of the calling party and the called party, and the information of the current call service. For example: The call levels are divided from high to low: emergency calls by PACA users, emergency calls by ordinary users, conference calls with PACA users, ordinary calls with PACA, conference calls with ordinary users, A normal call made by a normal user.
  • the MSC selects a lower-level call for forced teardown. If the ground circuit resources are insufficient, choose a call from a lower-level user of the same base station control system as the PACA user for forced dismantling. If the wireless channel resources are insufficient, select a call from a lower-level user in the same cell as the PACA user to perform a forced teardown. If the ground circuit and wireless channel resources are not enough, select a call from a lower-level user in the same cell as the PACA user to perform forced disassembly.
  • the above low-level calls usually refer to calls involving ordinary users, that is, conference calls by ordinary users or ordinary calls by ordinary users. Calls involving PACA users and emergency calls initiated by ordinary users cannot be forcibly dismantled.
  • an assignment request message is initiated for the PACA user, occupying the released ground circuit resources and wireless channel resources.
  • FIG. 4 shows a specific flow of the priority access method of the present invention.
  • the base station control system BSC checks the radio channel resources and sets the corresponding radio environment and resource parameters. and Resources), sending a service request CM Service Req message to notify the mobile switching center MSC that the user requires access.
  • the mobile switching center MSC After receiving the CM Service Req message, the mobile switching center MSC checks the parameter Radio Environment and Resources, if there are no available wireless channel resources, and the user subscribes to the PACA service, the mobile switching center MSC sets a service prohibition flag and rejects the access request of a common user in the same cell as the PACA user. If there are no available ground circuit resources, the MSC shall set a service prohibition flag to deny access requests from ordinary users of the same base station control system as the PACA users. Then the MSC selects an ongoing call with a common user in the same cell as the PACA user and performs a forced teardown. After the forced teardown is completed, it occupies the ground circuit resources and sends an assignment request message, Assignment Req, to notify the base station control system BSC to perform wireless channel assignment. Channel resources.
  • the base station control system BSC After the base station control system BSC successfully occupies the wireless channel resources, it sends an assignment complete message Assignment Complete to notify the mobile switching center MSC that the assignment is complete.
  • the mobile switching center MSC After receiving the Assignment Complete message, the mobile switching center MSC cancels the set service prohibition flag and allows ordinary users to access the request. At this point, the PACA user has successfully accessed the system.
  • the flow of the priority access method of the present invention can also be shown in FIG. 5. This flow is similar to the flow of FIG. 4, except that the base station control system BSC does not need to judge the wireless channel resources before sending the CM Service Req message.
  • the mobile switching center MSC After receiving the CM Service Req service request message, the mobile switching center MSC sends a message according to the normal procedure. Assignment Req requests the base station control system BSC to perform wireless channel assignment.
  • the base station control system BSC checks and finds that there are no available wireless channel resources, and notifies the mobile switching center MSC of the assignment failure message Assignment Failure, and the assignment to the user fails.
  • the mobile switching center MSC After the mobile switching center MSC receives the Assignment Failure, if the user signs up for a PACA service, the mobile switching center MSC sets a corresponding service prohibition flag. Then, the MSC selects an ongoing call with a common user in the same cell as the PACA user, and performs a forced teardown. After the forced teardown is completed, it occupies the ground circuit resources and sends an Assignment Request Assignment Req message to notify the base station control system BSC to perform wireless channel assignment. Channel resources. After the base station control system BSC successfully occupies the wireless channel resources, it sends an Assignment Complete message to notify the mobile switching center MSC that the assignment is completed.
  • the mobile switching center MSC After receiving the Assignment Complete message, the mobile switching center MSC cancels the set flag and allows ordinary users to access the request. At this point, the PACA user has successfully accessed the system.
  • the above scheme is forcibly demolished by MSC. It is also possible for both the MSC and the BSC to support forced disassembly to achieve PACA access.
  • the MSC selects a call of a lower-level user for forced disassembly. If the wireless channel resources are insufficient, the base station control system BSC will perform a forced dismantling. After the demolishing is completed, the PACA user occupies the released resources for access.
  • Priority access for PACA users can also be achieved by reserving wireless channel resources in the base station control system BSC and reserving ground circuit resources in the mobile switching center MSC. Calls made by ordinary users cannot occupy reserved resources.
  • a PACA user accesses if the public resources are not enough, the resources reserved for the PACA user are used for access. If the 'resources' reserved for PACA users are gone, the forced demolition process is initiated.
  • the method of the invention is applicable to CDMA2000, WCDMA and GSM systems.

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

Abstract

La présente invention se rapporte à un procédé permettant de conférer un accès prioritaire à un utilisateur d'un service d'attribution de voies avec fixation de priorités d'accès (PACA), ledit procédé consistant à diviser l'appel de l'utilisateur en niveaux lorsqu'un utilisateur PACA demande un accès et que les ressources de type voies radio et/ou les ressources de type circuits terrestres ne sont pas en nombre suffisant, l'appel de l'utilisateur de niveau inférieur est démantelé de sorte que l'utilisateur effectuant un appel PACA ou l'utilisateur recevant un appel PACA utilise les ressources libérées par l'utilisateur démantelé ainsi que l'accès prioritaire. Le procédé de la présente invention permet à l'utilisateur PACA de ne pas avoir à être en file d'attente dans le BSC et de disposer d'un accès direct lorsque les ressources ne sont pas suffisantes, la vitesse d'accès étant importante et l'utilisateur spécial étant satisfait quant à sa demande de service.
PCT/CN2004/000559 2003-05-28 2004-05-28 Procede conferant un acces prioritaire a un utilisateur de service d'attribution de voies avec fixation de priorites d'acces WO2004107793A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNB031385591A CN100366122C (zh) 2003-05-28 2003-05-28 优先接入和信道指配用户优先接入方法
CN03138559.1 2003-05-28

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CN1327744C (zh) * 2005-05-31 2007-07-18 华为技术有限公司 一种实现漫游用户优先接入无线信道的方法
CN101237702B (zh) * 2008-01-02 2011-11-09 中国联合网络通信集团有限公司 一种基于用户签约信息的差异化网络服务方法及***
CN101977442A (zh) * 2010-10-11 2011-02-16 中兴通讯股份有限公司 一种呼叫优先接入中电路资源分配的方法和***
CN102006638B (zh) * 2010-11-25 2015-08-12 中兴通讯股份有限公司 呼叫处理方法及终端

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US5574977A (en) * 1995-04-17 1996-11-12 Telefonaktiebolaget Lm Ericsson System and method for providing priority access and channel assignment in a cellular telecommunication system
WO1998031180A1 (fr) * 1997-01-10 1998-07-16 Nokia Telecommunications Oy Procede et systeme permettant d'etablir des communications d'urgence dans un circuit local sans fil
CN1323502A (zh) * 1998-08-20 2001-11-21 夸尔柯姆股份有限公司 蜂窝式电话***中优先接入信道分配的***和方法
US20010049288A1 (en) * 2000-06-01 2001-12-06 Samsung Electronics Co., Ltd Apparatus and a method for controlling a priority access and channel assignment call in a mobile telecommunication system

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US5794156A (en) * 1996-08-26 1998-08-11 Nokia Mobile Phones Limited Cellular communications system having enhanced priority access and channel assignment functions
CN1433651A (zh) * 2000-12-01 2003-07-30 松下电器产业株式会社 基站装置及线路连接控制方法

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US5574977A (en) * 1995-04-17 1996-11-12 Telefonaktiebolaget Lm Ericsson System and method for providing priority access and channel assignment in a cellular telecommunication system
WO1998031180A1 (fr) * 1997-01-10 1998-07-16 Nokia Telecommunications Oy Procede et systeme permettant d'etablir des communications d'urgence dans un circuit local sans fil
CN1323502A (zh) * 1998-08-20 2001-11-21 夸尔柯姆股份有限公司 蜂窝式电话***中优先接入信道分配的***和方法
US20010049288A1 (en) * 2000-06-01 2001-12-06 Samsung Electronics Co., Ltd Apparatus and a method for controlling a priority access and channel assignment call in a mobile telecommunication system

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CN1553742A (zh) 2004-12-08
CN100366122C (zh) 2008-01-30

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