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WO2008011807A1 - Procédé de libération de ressources de canaux libres et système d'appels de groupe - Google Patents

Procédé de libération de ressources de canaux libres et système d'appels de groupe Download PDF

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Publication number
WO2008011807A1
WO2008011807A1 PCT/CN2007/002181 CN2007002181W WO2008011807A1 WO 2008011807 A1 WO2008011807 A1 WO 2008011807A1 CN 2007002181 W CN2007002181 W CN 2007002181W WO 2008011807 A1 WO2008011807 A1 WO 2008011807A1
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WO
WIPO (PCT)
Prior art keywords
uplink
message
cell
terminal
group call
Prior art date
Application number
PCT/CN2007/002181
Other languages
English (en)
Chinese (zh)
Inventor
De Chen
Minjun Shen
Guang Liu
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 WO2008011807A1 publication Critical patent/WO2008011807A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/30—Resource management for broadcast services

Definitions

  • the cluster wireless communication system hereinafter referred to as the cluster system, is a more economical and flexible command and dispatch communication system developed in recent years. It is widely used in government agencies, energy transportation, airport terminals, industrial and mining enterprises, fire police, Water conservancy and military units to meet the internal communication needs of each unit.
  • the core network structure of the cluster system is as shown in FIG. 1 , which includes HLR (Home Location Register), VLR (Visitor Location Register), GMSC (Gateway Mobile Service Switch Center), and Anchor.
  • HLR Home Location Register
  • VLR Visitor Location Register
  • GMSC Gateway Mobile Service Switch Center
  • Anchor Anchor
  • MSC Error MSC
  • Relay MSC Relay MSC
  • GCR Group Call Register
  • the HLR is used to store user information, including the user IMSI (International Mobile Subscriber Identity), and the group ID list (one user can belong to at most 50 groups).
  • IMSI International Mobile Subscriber Identity
  • group ID list one user can belong to at most 50 groups.
  • the VLR is used to store the user IMSI and the ID list of the group to which the user belongs. This information is copied from the HLR as the user roams.
  • the GMSC is used to connect to the external network and the Anchor MSC, respectively.
  • the GMSC is an MSC that is not related to the group call. It is located between different networks (such as between a fixed network and a mobile network, or between China Unicom and China Mobile). When a call crosses the network, the call arrives first. The GMSC then routes the call by the GMSC to the MSC where the called party is located.
  • the Anchor MSC and the Relay MSC are the MSCs associated with the group call.
  • the Anchor MSC is used to control the MSC of the entire group call. It manages and maintains a specific VGCS (Voice Group Call Service), and other
  • the MSCs associated with the group call are Relay MSCs.
  • Anchor Both the MSC and the Relay MSC are speaking relative to one group, and are not fixed names.
  • an MSC may be an Anchor MSC for the group call 110 and a Relay MSC for the group call 120. There is a one-to-many tree relationship between the Anchor MSC and the relay MSC.
  • the GCR includes a group identification ID and a group call area, where the group call area is defined as a family of cells, and the group call area and the group ID are collectively referred to as a group call reference.
  • the GCR connected to the anchor MSC includes a dispatcher list related to the group call reference, a relay MSC list, and a cell list directly controlled by the anchor MSC.
  • the GCR connected to the relay MSC includes the anchor MSC address associated with the group call reference and the cell list controlled by the relay MSC. This information is fixed information stored in the HLR and SIM card when opening an account, and does not implement mobility management for the group call user.
  • the anchor MSC When receiving the group call initiation request, the anchor MSC queries the connected GCR for the group attribute, and obtains a scheduler list, a relay MSC list, and a cell list under the control of the MSC. Then, the call relay MSC establishes an uplink and downlink group call channel for the cell under the control of the MSC, and then initiates a group call by the user in the NCH notification group of each cell, and indicates the group call channel parameter for the group user to listen.
  • the relay MSC After receiving the group call request from the anchor MSC, the relay MSC queries the connected GCR for the cell list, establishes a group call channel in the cells, and notifies the user in the group that the group call is initiated through the NCH (notification channel), and indicates The group calls the channel parameters so that the users in the group can listen.
  • NCH notification channel
  • a group of users in a particular area can simultaneously join the group call area and listen to the talker. There can only be one speaker at a time, and when the speaker finishes speaking, other users can become speakers by pressing the PTT button (Push to talk). During the call, any user can decide to leave midway or join the group call area midway. Users entering the group call area can receive the notification and join the main call halfway.
  • the talker can occupy the uplink group call channel while monitoring the downlink group call channel.
  • the listener can only intelligently monitor the downlink group call channel.
  • the dispatcher when the general speaker is speaking, the dispatcher also speaks through the dispatching station. At this time, the user can hear the voices of the general speaker and the dispatcher at the same time, but in general, the ordinary speaker stops talking. Dispatcher It is also possible to initiate a group call through the dispatching station. When only the dispatcher is speaking, the uplink group call channel is idle.
  • a call zone may include multiple cells, and there may be many users in these cells, and some may have no users.
  • the relay MSC After receiving the group call request of the anchor MSC, the relay MSC establishes a group call channel for all cells under the control of the MSC. This is a waste of channel resources for a cell without a user, so it needs to be released in time. The group call channel of the cell where no user exists is dropped.
  • the prior art related to the present invention is to release the group call channel of a cell without a user by an uplink response procedure.
  • the implementation process is as follows:
  • the network may send a UPLINK FREE (uplink idle) message through the downlink group call channel when the uplink is busy, and carry an indication message requesting the terminal to respond.
  • UPLINK FREE uplink idle
  • the UPLINK ACCESS message with the cause value "reply on uplink access request" is sent.
  • the sending process is: After receiving the indication message, randomly wait for a random delay of 0 ⁇ 20 milliseconds, send a UPLINK ACCESS message, then wait for 100 milliseconds plus a random delay of 0 to 20 milliseconds, send a UPLINK ACCESS message again, and then return Go to group receive mode and no longer send any messages.
  • the network After receiving the UPLINK ACCESS message of the terminal, the network considers that the cell has a user, and does not release the uplink and downlink group call channel established for the cell, otherwise releases the group call channel of the cell, and sends a notification message through the NCH, and in the notification message
  • the notification message carrying the description of the group call channel is carried in the middle.
  • the network cannot initiate the uplink response process.
  • the corresponding terminal side can only perform the uplink response when the uplink group call channel is busy. Therefore, when there is no user in a cell, it is already The group call channel allocated by the cell cannot be released in time, thus causing waste of channel resources.
  • the dispatcher speaks through the dispatching station, the uplink group call channel is idle. Therefore, according to the prior art, the network side cannot initiate the uplink response process at this time, but must wait until the dispatcher ends the speech, and the uplink group When the channel is busy, the uplink response process can be initiated. This not only delays the time for the network side to wait for the uplink response process, but also delays the channel resources allocated for the cell where no user exists. Therefore, channel resources are more wasted. Summary of the invention
  • the object of the present invention is to provide a method for realizing the timely release of idle channel resources and a group call system.
  • the network side can know in time whether there is a user in each cell in the group call area, and the network side waits to initiate an uplink response process.
  • the time is shortened, so that when the network side finds that no user exists in a certain cell, the uplink and downlink group call channels allocated to the cell are released in time, so that the part of the channel resources can be fully reused.
  • the present invention provides a method for implementing timely release of idle channel resources, including:
  • the network side initiates an uplink response process when the uplink group call channel of the cell is idle, and requests the terminal in the cell to respond in the delivered message;
  • the channel resources allocated for the cell are released.
  • the present invention provides a method for performing an uplink response, which includes:
  • the terminal When the terminal performs an uplink response, the terminal sends a message to the network side through the uplink idle group call channel of the cell in which it is located.
  • the present invention provides a group call system that implements timely release of idle channel resources, including a network side, where the network side includes:
  • a channel resource release unit configured to release a channel resource allocated to the cell when the response of the cell is not received within a set time.
  • the present invention provides a terminal for performing an uplink response, which includes:
  • a scheduling unit configured to: when the terminal performs an uplink response, schedule a message that the terminal needs to send; the information transmission unit is configured to send, by using an uplink idle group call channel of the cell where the terminal is located, a message scheduled by the scheduling unit The network side.
  • the network side can initiate an uplink response process when the uplink group call channel is idle. Therefore, the present invention can know in time whether a user exists in each cell in the group call area, thereby enabling the network side to The time for waiting for the initiation of the uplink response process is shortened, so that the uplink and downlink group call channels that have been allocated for the cells that do not exist for the user are released in time, so that the scheduling of resources is more flexible, and the waste of channel resources is reduced, and the prior art is solved.
  • FIG. 1 is a schematic structural diagram of a core network of a cluster system provided by the background technology
  • Figure 2 is a flow chart of the first embodiment of the present invention.
  • Figure 3 is a flow chart of a second embodiment of the present invention.
  • Figure 4 is a block diagram showing the structure of a fifth embodiment of the present invention.
  • Figure 5 is a block diagram showing the structure of a sixth embodiment of the present invention.
  • FIG. 6 is a block diagram showing the structure of an eighth embodiment of the present invention. detailed description
  • the first embodiment of the present invention provides a method for realizing timely release of idle channel resources, where the network side can know in time that the user is present in each cell in the group call area when the uplink paging channel is idle.
  • the side initiates an uplink response process when the cell uplink group call channel is idle, and requests the terminal in the cell to respond; when the user exists in the cell, the terminal sends the bearer through the terminal.
  • the UPLINK ACCESS message of the uplink response cause value is sent to the network side; when the network side does not receive the information fed back by the terminal in the cell within the set time, it is considered that no user exists in the cell, and thus
  • the uplink and downlink group call channels allocated for the cell are released.
  • the specific implementation process is shown in Figure 2, including the following steps:
  • Step 101 When the network side confirms that the cell needs to initiate an uplink response process, the UPLINK FREE message is sent by the group call downlink channel allocated for the cell, and the uplink response request is carried in the message, regardless of whether the uplink group call channel is idle or busy. Identification (Uplink Access Request).
  • the terminal When receiving the UPLINK FREE message carrying the request for the uplink response request, the terminal immediately sends an UPLINK ACCESS message with the cause value "reply on uplink access request".
  • the sending process is: After receiving the indication message, randomly waiting A random delay of 0 ⁇ 20 milliseconds, send a UPLINK ACCESS message, then wait for 100 milliseconds plus a random delay of 0 to 20 milliseconds, send a UPLINK ACCESS message again, and then return to the group receive mode (group receive mode) ) and no longer send any messages.
  • Step 103 When the network side does not receive the response of the terminal in the cell within a set time, release the channel resource allocated for the cell.
  • step 103 after receiving the UPLINK ACCESS message sent by the terminal in the cell, the network side considers that there is a user in the cell, and then does not release the uplink and downlink group call channel allocated to the cell; If the message returned by the terminal in the cell is not received within the time, the There is no user in the cell, so the uplink and downlink group call channels allocated to the cell are released, and a notification message not carrying the group call channel description is sent to the cell through the NCH channel.
  • the second embodiment of the present invention provides another method for implementing timely release of idle channel resources, where the network side initiates an uplink response process when the uplink group call channel is idle, and requests the terminal in the cell to respond; when the cell memory When the user, and the terminal has a non-uplink response message (that is, a message carrying a non-uplink response cause value) needs to be sent, the terminal sends the non-uplink response message; when the network side does not receive the cell within the set time When the information is fed back by the terminal, it is considered that no user exists in the cell, and then the uplink and downlink group call channel allocated for the cell is released.
  • the specific implementation process is shown in Figure 3, including the following steps:
  • each call corresponds to a priority.
  • another high-priority call can be interrupted to start speaking.
  • Step 202 When the network side confirms that the cell needs to initiate an uplink response process, the UPLINK FREE message is sent by using the group call downlink channel allocated for the cell, regardless of whether the uplink group call channel is idle or busy.
  • the uplink response request identifier (Uplink Access Request) is carried in the message.
  • step 202 The specific implementation process of step 202 is similar to the related description of step 101 in the first embodiment, and will not be described in detail herein.
  • Step 203 After receiving the message sent by the network side, the terminal in the cell sends a message of the non-uplink response to the network side through the uplink group call channel of the cell, if the message of the non-uplink response needs to be sent, and The UPLINK ACCESS message carrying the uplink response of the uplink response cause value is no longer sent.
  • step 203 The specific implementation process of step 203 is as follows:
  • the terminal in the cell After receiving the UPLINK FREE message carrying the request for the uplink response request, the terminal in the cell needs to send a message indicating that there is a non-uplink response before sending the message.
  • the terminal sends a non-uplink through the uplink group call channel of the cell.
  • the response message is sent to the network side, and the UPLINK ACCESS message of the uplink response is no longer sent; otherwise, the UPLINK ACCESS message of the uplink response is sent to the network side through the uplink group call channel of the cell, and the cause value of the uplink response is carried in the UPLINK ACCESS message. .
  • the process of sending a message is: After receiving the indication message, randomly wait for a random delay of 0 ⁇ 20 milliseconds, send a UPLINK ACCESS message, and then wait for 100 milliseconds plus a random delay of 0 to 20 milliseconds, and send another one.
  • UPLINK ACCESS message then return to group receive mode and no longer send any messages. If the first message sent by the terminal in the cell is an UPLINK ACCESS message carrying an uplink response cause value of the uplink response cause value, after the message is sent, it is detected that a message with a non-uplink response needs to be sent before the second message is sent. When it directly sends a message that is not an uplink response, it does not send an UPLINK ACCESS message of the uplink response.
  • step 204 after receiving any message sent by the terminal in the cell, the network side considers that there is a user in the cell, and determines that the uplink and downlink group call channel allocated for the cell is not released; if not received within the set time If the message returned by the terminal in the cell is considered, no user exists in the cell, and thus The uplink and downlink group call channel allocated for the cell is released, and a notification message not carrying the group call channel description is sent to the cell through the NCH channel.
  • the third embodiment of the present invention provides a method for performing an uplink response, in which, when the terminal performs an uplink response, the message that the non-uplink response is preferentially scheduled by the uplink idle group call channel of the cell in which the terminal is located is sent to the network side.
  • the message carrying the uplink response cause value is no longer sent.
  • the specific implementation process includes:
  • the priority of the terminal when scheduling the message for scheduling the non-uplink response is higher than the priority for scheduling the UPLINK ACCESS message of the uplink response.
  • the specific case of this step is similar to step 201 in the second embodiment, and will not be described in detail herein.
  • the terminal After the terminal receives the message sent by the network side, if the message that the non-uplink response needs to be sent, the terminal sends a non-uplink response message to the network side through the uplink group call channel of the cell, The UPLINK ACCESS message carrying the uplink response of the uplink response cause value is no longer sent.
  • the specific implementation process is as follows:
  • the terminal in the cell After receiving the UPLINK FREE message carrying the request for the uplink response request, the terminal in the cell needs to send a message indicating that there is a non-uplink response before sending the message.
  • the terminal sends a non-uplink through the uplink group call channel of the cell.
  • the response message is sent to the network side, and the UPLINK ACCESS message of the uplink response is no longer sent; otherwise, the uplink response UPLINK ACCESS message is sent to the network side through the uplink group call channel of the cell, and the reason value of the uplink response is carried in the message.
  • a fourth embodiment of the present invention provides another method for performing an uplink response, where When the uplink response is performed, a message is sent to the network side through the uplink idle group call channel of the cell in which it is located.
  • the specific implementation process includes:
  • the terminal When the terminal performs the uplink response, whether it has a non-uplink response message (a message that is normally sent), the message carrying the uplink response cause value is sent through the uplink idle group call channel of the cell in which the terminal is located.
  • a non-uplink response message a message that is normally sent
  • a fifth embodiment of the present invention provides a group call system for realizing timely release of idle channel resources, and the structure thereof is as shown in FIG. 4, including a network.
  • the network includes an uplink response process initiating unit and a channel resource releasing unit.
  • the network side After the network side receives the message sent by the terminal in the cell, it does not process, that is, keeps the uplink and downlink group call channel originally allocated to the cell; if the network side does not receive within the set time When the response to the terminal in the cell is reached, the channel resource allocated by the channel is released by the channel resource release unit.
  • a sixth embodiment of the present invention provides a group call system for realizing timely release of idle channel resources, and the structure thereof is as shown in FIG. 5, and includes terminals in a cell in a network side and a group call area.
  • the network side includes an uplink response process initiating unit and a channel resource releasing unit;
  • the terminal of the cell in the group calling area includes an information transmitting unit, a detecting unit, and a scheduling unit.
  • the uplink response process initiating unit on the network side initiates an uplink response process when the uplink group call channel of the cell is idle, and requests the terminal in the cell to respond in the delivered message.
  • the information transmitting unit of the terminal in the cell receives the message sent by the network side; and after the information transmitting unit receives the message sent by the network side, the detecting unit detects whether the terminal has a non-uplink response message. (that is, the message carrying the non-uplink response cause value) needs to be sent.
  • the scheduling unit When the detecting unit detects that the terminal has a non-uplink response message to be sent, the scheduling unit is triggered; the scheduling unit schedules the non-uplink response message; the information transmission unit will dispatch the unit The scheduled non-uplink response message is sent to the network side; when the detecting unit detects that the terminal does not have a non-uplink response message needs to be sent
  • the sending unit triggers the scheduling unit; the scheduling unit schedules the uplink response message; and the information transmitting unit sends the uplink response message scheduled by the scheduling unit to the network side.
  • the network side After receiving the message sent by the terminal in the cell, the network side does not process, that is, keeps the uplink and downlink group call channel originally allocated to the cell; if the network side does not receive the specified time within the set time
  • the channel resource release unit on the network side releases the channel resource allocated for the cell.
  • the seventh embodiment of the present invention provides another group call system for realizing timely release of idle channel resources, which is compared with the sixth embodiment, and the detection unit and the scheduling unit are absent in the structure of the terminal of the cell in the group call area included in the present invention.
  • the seventh embodiment of the present invention includes terminals of cells in the network side and the group call area.
  • the network side includes an uplink response process initiating unit and a channel resource releasing unit; and the terminal in the cell in the group calling area includes an information transmitting unit.
  • the information transmission unit of the terminal in the cell receives the message sent by the network side, and immediately receives the UPLINK ACCESS message of the uplink response after receiving the message sent by the network side, and carries the uplink response reason in the message. value.
  • the network side can initiate the uplink response process at any time. Therefore, the embodiment of the present invention can shorten the time for the network side to wait for the uplink response process to be initiated, so that the resources of the cell without the terminal can be timely. Release, which makes the scheduling of resources more flexible and reduces the waste of channel resources.

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

Abstract

L'invention porte sur un procédé de libération de ressources de canaux en temps voulu et sur un système d'appels de groupe associé. Si le côté réseau émet une demande d'accès à une liaison ascendante alors que le canal d'appel de groupe est libre, et demande une réponse de la cellule dans le message descendant, si la réponse de la cellule n'a pas été reçue, il libère la ressource de canal attribuée à la cellule. La technique de l'invention peut libérer les appels de groupes ascendants et descendants attribués à la cellule sans utilisateur et peut rendre plus souple la planification des ressources. De plus, si le terminal constate que la transmission d'une réponse sur liaison ascendante n'est pas nécessaire, le message en réponse est transmis en premier et le message en réponse avec la valeur de réponse ascendante n'est pas transmis.
PCT/CN2007/002181 2006-07-21 2007-07-17 Procédé de libération de ressources de canaux libres et système d'appels de groupe WO2008011807A1 (fr)

Applications Claiming Priority (2)

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CN2006101035501A CN101111009B (zh) 2006-07-21 2006-07-21 实现空闲信道资源及时释放的方法和组呼系统
CN200610103550.1 2006-07-21

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KR100956828B1 (ko) 2008-11-13 2010-05-11 엘지전자 주식회사 반(半)-지속적 스케줄링의 비활성화를 지시하는 방법 및 이를 이용한 장치
CN101808331B (zh) * 2010-04-02 2012-12-19 华为技术有限公司 动态业务流的处理方法及基站
CN102413492A (zh) * 2010-09-21 2012-04-11 中兴通讯股份有限公司 一种小区听者检测的方法及基站收发机
CN102802122A (zh) * 2011-05-24 2012-11-28 中兴通讯股份有限公司 组呼信道的下行检测方法、装置及基站
CN107135489B (zh) * 2016-02-29 2021-03-23 展讯通信（上海）有限公司 监测小区内移动台接收集群组呼业务的方法及装置

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US20050243744A1 (en) * 2003-03-17 2005-11-03 Qprs Limited Quality packet radio service for a general packet radio system

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JP2001028631A (ja) * 1999-07-14 2001-01-30 Hitachi Kokusai Electric Inc 電話システム
US20050243744A1 (en) * 2003-03-17 2005-11-03 Qprs Limited Quality packet radio service for a general packet radio system
CN1678092A (zh) * 2004-04-02 2005-10-05 华为技术有限公司 一种释放开放信道小区资源的方法

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