WO2012159487A1 - Procédé, dispositif et station de base de détection de liaison descendante pour un canal d'appel de groupe - Google Patents

Procédé, dispositif et station de base de détection de liaison descendante pour un canal d'appel de groupe Download PDF

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Publication number
WO2012159487A1
WO2012159487A1 PCT/CN2012/072822 CN2012072822W WO2012159487A1 WO 2012159487 A1 WO2012159487 A1 WO 2012159487A1 CN 2012072822 W CN2012072822 W CN 2012072822W WO 2012159487 A1 WO2012159487 A1 WO 2012159487A1
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WO
WIPO (PCT)
Prior art keywords
uplink
message
uplink access
base station
access message
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Application number
PCT/CN2012/072822
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English (en)
Chinese (zh)
Inventor
杜玲玲
付聪
Original Assignee
中兴通讯股份有限公司
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Publication of WO2012159487A1 publication Critical patent/WO2012159487A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast

Definitions

  • the present invention relates to the field of mobile communications, and in particular to a downlink detection method, apparatus and base station for a group call channel. Background technique
  • Voice Group Call Service and Voice Broadcast Service (VBS) are multi-party language communication methods that break through the limitations of peer-to-peer communication and enable fast call setup. Collectively referred to as group call business.
  • the group call service includes two members of the identity, namely the dispatcher and the ordinary user.
  • the dispatcher can be a fixed network user, such as a dispatching station or a mobile user; there can be zero, one or a limited number of dispatchers in the group call service; the ordinary user refers to the number of mobile users who have subscribed to the VGCS or VBS. According to whether it is a speech, it is divided into a talker and a listener.
  • a particular group call communication is uniquely determined by the group function code and the group call area.
  • the group function code and the group call area are collectively referred to as a group call reference, that is, the group call reference uniquely determines a group call communication.
  • the group function code identifies the function of the group, that is, which members of the identity are referenced; a user can sign multiple group function codes at the same time and set different priorities for them.
  • the group call area refers to the coverage area of the group call communication.
  • the radio cell is the basic unit and can be composed of one or several cells. The cell that constitutes the group call area is called a group call cell.
  • the group call service uses a public downlink broadcast function. This function allows listeners belonging to the same group of function codes in the same group of call cells to listen to group calls on a traffic channel. There is no limit on the number of users. Save the available resources on the air interface and signaling link between network elements.
  • GSM-Railway In the GSM-Railway (GSM-R) system, due to the listener In order to join and leave the group call at any time, there may be no listeners on the group call channel, resulting in low resource utilization of the system; the existing protocol specifies a downlink detection method for the group call channel: The network can be When the uplink is busy, the uplink idle is sent on the group call channel.
  • the "uplink access request" field in the message is "Mobile station shall perform the uplink reply procedure", that is, the listener is required to respond.
  • the current cell in the current cell does not listen to the group call, then release the group call channel to avoid waste of wireless resources; conversely, if the listener is listening to the group call, the listener receives the Uplink Free message requesting the response, After the network receives the Uplink Access message, it considers that the cell has a listener and does not release the group call channel of the cell.
  • FIG. 1 is a flow chart of downlink detection when a listener exists in a cell in the prior art. The process is described in detail as follows:
  • Step 101 The Base Station Subsystem (BSS) delivers an Uplink Free message
  • the "uplink access request" field in the message is "Mobile station shall perform the uplink reply procedure", that is, the listener is required to respond.
  • Step 102 The MS (Mobile station, the mobile station) receives the above Uplink Free message, and reports the responded Uplink Access message;
  • the process of sending an Uplink Access (Reply on uplink access request) message to the listener is: After receiving the Uplink Free message, randomly wait for a random delay of 0 ⁇ 20 milliseconds, and send an UplinkAccess message; then wait for 100 milliseconds. A random delay of 0 to 20 milliseconds, sending an UplinkAccess message again.
  • Step 103 The base station (Base Transceiver Station, BTS) receives an Uplink Access (Reply on uplink access request) message, and reports a Listener Detection message to the Base Station Controller (BSC).
  • BTS Base Transceiver Station
  • BSC Base Station Controller
  • Step 104 The base station controller receives the Listener Detection message, and considers that the cell has a listener. The group call channel of the cell is not released.
  • a listener sends two Uplink Access messages.
  • the BSC receives multiple useless Listener Detection messages, which seriously wastes the bandwidth of the Abis port.
  • the technical problem to be solved by the present invention is to provide a downlink detection method, a device and a base station for a group call channel, which can solve the problem that when the downlink detection is performed in the group call service, the base station controller receives multiple useless Listener Detection messages, causing the Abis port. The problem of wasted bandwidth.
  • a downlink detection method for a group call channel including:
  • the base station When the Uplink Access message is valid, the base station sends a listener detection Listener Detection message to the base station controller, so that the base station controller reserves the group call channel; when the Uplink Access message is invalid, the base station Discard the Uplink Access message.
  • the determining, by the base station, whether the Uplink Access message is valid includes:
  • the base station determines that the Uplink Access message is valid; otherwise, the base station determines that the Uplink Access message is invalid.
  • the base station includes an identifier corresponding to the group call channel, and the initial value of the identifier bit is true, and the base station determines whether the uplink access message is the uplink received by the first time corresponding to the Uplink Free message.
  • Access messages include: Receiving, by the base station, an Uplink Access message corresponding to the Uplink Free message, setting the flag bit to false, starting a timer, and setting the flag bit to true after the timer expires;
  • the Uplink Access message received by the base station is an Uplink Access message corresponding to the Uplink Free message received for the first time.
  • the lower limit of the timer is 140 milliseconds, and the upper limit of the timer is the minimum interval for sending Uplink Free messages twice.
  • the embodiment of the present invention further provides a downlink detecting apparatus for a group call channel, including: a receiving module, configured to receive an uplink access Uplink Access message sent by a mobile station, where the Uplink Access message is that the mobile station is listening a message sent after an uplink idle Uplink Free message for downlink detection sent on the group call channel;
  • a determining module configured to determine whether the UplinkAccess message is valid
  • a processing module configured to: when the Uplink Access message is valid, send a listener detection Listener Detection message to the base station controller, so that the base station controller reserves the group call channel; when the Uplink Access message is invalid, Discard the UplinkAccess message.
  • the determining module is specifically configured to determine whether the Uplink Access message is an UplinkAccess message corresponding to the Uplink Free message received for the first time; if yes, determine that the UplinkAccess message is valid; otherwise, determine that the UplinkAccess message is invalid.
  • the base station includes an identifier corresponding to the group call channel, and the initial value of the identifier is true.
  • the determining module includes:
  • a setting unit configured to: after the receiving module receives an Uplink Access message corresponding to the Uplink Free message, set the flag bit to false, start a timer, and after the timer expires, set the identifier Bit is set to true;
  • a determining unit configured to: when the identifier bit is true, determine that the Uplink Access message received by the receiving module is the first uplink corresponding to the Uplink Free message received Access message.
  • the embodiment of the invention further provides a base station, including:
  • a receiving module configured to receive, by using a receiving port of the base station, an uplink access Uplink Access message sent by the mobile station, where the Uplink Access message is sent by the mobile station on the group call channel for downlink detection
  • An acknowledgment module sent after the uplink idle Uplink Free message is sent to determine whether the Uplink Access message is valid;
  • a processing module configured to: when the Uplink Access message is valid, send a listener detection Listener Detection message to the base station controller by using a sending port of the base station, so that the base station controller reserves the group call channel; When the message is invalid, the uplink ⁇ 3 ⁇ 4 wife message is discarded.
  • the determining module is specifically configured to determine whether the Uplink Access message is an Uplink Access message corresponding to the Uplink Free message received for the first time; if yes, determine that the Uplink Access message is valid; otherwise, determine the Uplink Access message. invalid.
  • the base station includes an identifier corresponding to the group call channel, and the initial value of the identifier is true.
  • the determining module includes:
  • a setting unit configured to: after the receiving module receives an Uplink Access message corresponding to the Uplink Free message, set the flag bit to false, start a timer, and after the timer expires, set the identifier Bit is set to true;
  • a determining unit configured to determine, when the identifier bit is true, the receiving module receives
  • the Uplink Access message is the first received Uplink Access message corresponding to the Uplink Free message.
  • the base station after receiving the uplink access message sent by the mobile station, the base station first determines whether the uplink access message is valid, and if the uplink access message is valid, the base station only Sending a listener detection message to the base station controller, so that the base station controller reserves the group call channel, and when the uplink access message is invalid, the base station directly discards the uplink access message, thereby avoiding sending unnecessary use to the base station controller.
  • Uplink access messages save bandwidth on the Abis port.
  • FIG. 1 is a schematic flowchart of downlink detection of a group call channel in the prior art
  • FIG. 2 is a schematic flowchart of a downlink detection method of a group call channel according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a downlink detection apparatus of a group call channel according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a group call channel according to an embodiment of the present invention
  • Another flow chart of the downlink detection method Another flow chart of the downlink detection method. detailed description
  • the embodiment of the present invention is directed to the problem that the bandwidth of the Abis interface is seriously wasted when the downlink detection is performed on the group call channel in the prior art, and the downlink detection method, device, and base station of the group call channel are provided, which can be solved in the group call service.
  • the base station controller receives multiple useless Listener Detection messages, causing a waste of bandwidth on the Abis interface.
  • FIG. 2 is a schematic flowchart of a method for detecting a downlink of a group call channel according to an embodiment of the present invention. As shown in FIG. 2, this embodiment includes:
  • Step 201 The base station receives an uplink access Uplink Access message sent by the mobile station, where the Uplink Access message is sent after the mobile station listens to the uplink idle Uplink Free message for downlink detection sent on the group call channel.
  • Step 202 The base station determines whether the Uplink Access message is valid.
  • Step 203 When the Uplink Access message is valid, the base station sends a Listener Detection Listener Detection message to the base station controller, so that the base station controller reserves the group call channel. When the Uplink Access message is invalid, the base station discards the Uplink Access message.
  • the determining, by the base station, whether the UplinkAccess message is valid includes:
  • the base station determines whether the Uplink Access message is the UplinkAccess message corresponding to the Uplink Free message received for the first time; if yes, the base station determines that the UplinkAccess message is valid; otherwise, the base station determines that the UplinkAccess message is invalid.
  • the base station includes an identifier of the corresponding group call channel, and the initial value of the identifier bit is true.
  • the Uplink Access message that the base station determines whether the Uplink Access message is the first received corresponding Uplink Free message includes:
  • the base station receives the UplinkAccess message corresponding to the Uplink Free message, sets the flag bit to false, starts the timer, and sets the flag bit to true after the timer expires; when the flag bit is true, the base station receives the Uplink
  • the Access message is the UplinkAccess message corresponding to the Uplink Free message received for the first time.
  • the lower limit of the timer is 140 milliseconds
  • the upper limit of the timer is the minimum interval for delivering the Uplink Free message twice.
  • the downlink detection method of the group call channel of the present invention after receiving the uplink access message sent by the mobile station, the base station first determines whether the uplink access message is valid, and if the uplink access message is valid, the base station The listener detection message is sent to the base station controller, so that the base station controller reserves the group call channel. When the uplink access message is invalid, the base station directly discards the uplink access message, thereby avoiding sending uselessness to the base station controller. Uplink access messages save bandwidth on the Abis port.
  • FIG. 3 is a schematic structural diagram of a downlink detecting apparatus of a group call channel according to an embodiment of the present invention. As shown in FIG. 3, this embodiment includes:
  • the receiving module 30 is configured to receive an uplink access UplinkAccess message sent by the mobile station, where the Uplink Access message is sent after the mobile station listens to the uplink idle Uplink Free message for downlink detection sent on the group call channel.
  • the determining module 31 is configured to determine whether the Uplink Access message is valid.
  • the processing module 32 is configured to: when the UplinkAccess message is valid, send a listener detection Listener Detection message to the base station controller, so that the base station controller reserves the group call channel; when the Uplink Access message is invalid, the Uplink Access message is discarded.
  • the determining module 31 is specifically configured to determine whether the UplinkAccess message is an Uplink Access message corresponding to the Uplink Free message received first; if yes, determine that the Uplink Access message is valid; otherwise, determine that the UplinkAccess message is invalid.
  • the base station includes an identifier of a corresponding group call channel, and the initial value of the identifier bit is true, and the determining module includes:
  • a setting unit configured to: after the receiving module receives the Uplink Access message corresponding to the Uplink Free message, set the flag bit to false, start a timer, and set the flag bit to true after the timer expires;
  • the determining unit is configured to: when the identifier bit is true, determine that the UplinkAccess message received by the receiving module is an Uplink Access message corresponding to the Uplink Free message received for the first time.
  • the downlink detecting apparatus of the group call channel of the present invention after receiving the uplink access message sent by the mobile station, the base station first determines whether the uplink access message is valid, and if the uplink access message is valid, the base station The listener detection message is sent to the base station controller, so that the base station controller reserves the group call channel. When the uplink access message is invalid, the base station directly discards the uplink access message, thereby avoiding sending uselessness to the base station controller. Uplink access messages save bandwidth on the Abis port.
  • the embodiment of the invention further provides a base station, including:
  • a receiving module configured to receive, by using a receiving port of the base station, an uplink access Uplink Access message sent by the mobile station, where the Uplink Access message is an uplink idle time that the mobile station sends on the group call channel for downlink detection a message sent after an Uplink Free message;
  • a determining module configured to determine whether the UplinkAccess message is valid
  • a processing module configured to send, by using a sending port of the base station, when the Uplink Access message is valid
  • the base station controller sends a listener to detect the Listener Detection message, so that the base station controller reserves the group call channel; when the Uplink Access message is invalid, the uplink access message is discarded.
  • the determining module is configured to determine whether the Uplink Access message is an Uplink Access message corresponding to the Uplink Free message received first; if yes, determine that the Uplink Access message is valid; otherwise, determine that the Uplink Access message is invalid.
  • the base station includes an identifier of a corresponding group call channel, and the initial value of the identifier bit is true, and the determining module includes:
  • a setting unit configured to: after the receiving module receives the Uplink Access message corresponding to the Uplink Free message, set the flag bit to false, start a timer, and set the flag bit to true after the timer expires;
  • the determining unit is configured to: when the identifier bit is true, determine that the UplinkAccess message received by the receiving module is an Uplink Access message corresponding to the Uplink Free message received for the first time.
  • the base station of the present invention first determines whether the uplink access message is valid after receiving the uplink access message sent by the mobile station, and if the uplink access message is valid, the base station sends the base station controller to the base station controller.
  • the detection message causes the base station controller to reserve the group call channel.
  • the base station directly discards the uplink access message, thereby avoiding sending unnecessary uplink access messages to the base station controller. , saves Abis port bandwidth.
  • Step 401 The BSS (Base Station Subsystem) sends an Uplink Free message on the group call channel.
  • BSS Base Station Subsystem
  • the "uplink access request" field in the Uplink Free message is "Mobile station shall perform the uplink reply procedure", that is, the listener is required to respond;
  • Step 402 The MS (Mobile station, the mobile station) receives the Uplink Free message, and reports a response to the Uplink Access message to the BTS (Base Transceiver Station).
  • the listener sends an Uplink Access (Reply on uplink access request) message.
  • Over Cheng Wei After receiving the Uplink Free message, randomly wait for a random delay of 0 ⁇ 20 milliseconds, send an Uplink Access message to the BTS, and then wait for 100 milliseconds plus a random delay of 0 to 20 milliseconds, and then go to the BTS again. Send an Uplink Access message;
  • Step 403 The BTS receives the Uplink Access message, and determines whether it needs to be processed, that is, determines the value of the own flag bit bNeedDeal. If the value is true (TRUE), the process needs to be processed, and the process proceeds to step 404. Otherwise, the process proceeds to step 407; wherein, the initial of bNeedDeal The value is true;
  • Step 404 The BTS reports a Listener Detection message to the BSC (Base Station Controller).
  • BSC Base Station Controller
  • the BSC After receiving the Listener Detection message, the BSC considers that the cell has a listener and does not release the group call channel of the cell.
  • Step 405 Set the value of bNeedDeal to false (FALSE), that is, after receiving the Uplink Access message within a certain period of time, it is discarded, and no processing is performed; setting a timer Timer;
  • Step 406 The MS reports the response to the Uplink Access message.
  • Step 407 The BTS receives the Uplink Access message, and determines that the bNeedDeal is false, that is, the process does not need to be processed, and the Uplink Access message is discarded.
  • Step 408 The timer of the BTS timer expires, and the value of bNeedDeal is set to true, that is, if the UplinkAccess message is subsequently received, the processing is the same as step 404.
  • the listener randomly waits for a random delay of 0 ⁇ 20 milliseconds and sends an UplinkAccess message; then waits for 100 milliseconds plus a random delay of 0 to 20 milliseconds, and then sends it again.
  • An Uplink Access message To ensure that the base station can filter all the Uplink Access messages for the downlink detection Uplink Free message, consider that the maximum delay of the BTS receiving the first Uplink Access and receiving the last Uplink Access is 140 milliseconds. Seconds, so Timer needs to be greater than or equal to 140 milliseconds;
  • the Timer does not filter out the response corresponding to the next Uplink Free message.
  • the Timer value needs to be sent less than twice in succession for the downlink.
  • the minimum interval of the detected Uplink Free message which is determined according to the configuration of the system.
  • the embodiment of the present invention can solve the problem that the Abis interface bandwidth is wasted during the downlink detection in the group call service.
  • the BTS After receiving the first uplink aceess in response to the downlink detection, the BTS reports the Listener detection message to the BSC, and then The uplink access message received in response to the downlink detection is discarded, and the message is not detected on the BSC.
  • the modules may be implemented in software for execution by various types of processors.
  • an identified executable code module can comprise one or more physical or logical blocks of computer instructions, which can be constructed, for example, as an object, procedure, or function. Nonetheless, the executable code of the identified modules need not be physically located together, but may include different instructions stored in different bits. When these instructions are logically combined, they form a module and implement the specifications of the module. purpose.
  • the executable code module can be a single instruction or a number of instructions, and can even be distributed across multiple different code segments, distributed among different programs, and distributed across multiple memory devices.
  • operational data may be identified within the module and may be implemented in any suitable form and organized within any suitable type of data structure. The operational data may be collected as a single data set, or may be distributed at different locations (including on different storage devices), and may at least partially exist as an electronic signal in a system or network On.
  • the module can be implemented by software, considering the level of the existing hardware process, the module can be implemented in software. Without considering the cost, a person skilled in the art can construct a corresponding hardware circuit to implement the corresponding function.
  • the hardware circuitry includes conventional Very Large Scale Integration (VLSI) circuits or gate arrays as well as existing semiconductors such as logic chips, transistors, or other discrete components.
  • VLSI Very Large Scale Integration
  • Modules can also be implemented with programmable hardware devices such as field programmable gate arrays, programmable array logic, programmable logic devices, and the like.
  • sequence numbers of the steps are not used to limit the sequence of the steps.
  • the steps of the steps are changed without any creative work. It is also within the scope of the invention.

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

Abstract

La présente invention porte sur un procédé, un dispositif et une station de base de détection de liaison descendante pour un canal d'appel de groupe, et se rapporte au domaine des communications mobiles. Le procédé de détection de liaison descendante pour un canal d'appel de groupe comprend les opérations suivantes : une station de base reçoit un message d'accès de liaison montante envoyé par une station mobile, le message d'accès de liaison montante étant un message envoyé par la station mobile lors de l'écoute d'un message d'inactivité de liaison montante pour une détection de liaison descendante envoyé sur un canal d'appel de groupe ; la station de base détermine si le message d'accès de liaison montante est ou non valide ; lorsque le message d'accès de liaison montante est valide, la station de base envoie un message de détection d'auditeur à un contrôleur de station de base, de sorte que le contrôleur de station de base réserve le canal d'appel de groupe ; et lorsque le message d'accès de liaison montante est non valide, la station de base supprime le message d'accès de liaison montante. Les modes de réalisation de la présente invention peuvent résoudre le problème de gaspillage de bande passante au niveau d'une interface Abis durant une détection de liaison descendante dans un service d'appel de groupe. La solution technique de la présente invention peut être appliquée à un service d'appel de groupe.
PCT/CN2012/072822 2011-05-24 2012-03-22 Procédé, dispositif et station de base de détection de liaison descendante pour un canal d'appel de groupe WO2012159487A1 (fr)

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CN201110137183.8 2011-05-24
CN2011101371838A CN102802122A (zh) 2011-05-24 2011-05-24 组呼信道的下行检测方法、装置及基站

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CN1816209A (zh) * 2005-02-06 2006-08-09 华为技术有限公司 提高语音广播业务呼叫信道利用率的方法
CN1867172A (zh) * 2005-11-14 2006-11-22 华为技术有限公司 一种节约组呼信道资源的方法
EP1755349A1 (fr) * 2005-08-19 2007-02-21 Siemens Aktiengesellschaft Message texte ou multimédia service et réseau de communication mobile
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US20090197537A1 (en) * 2005-08-23 2009-08-06 Nokia Siemens Networks Gmbh & Co, Kg Enhancing voice communication between a group of users in a network

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Publication number Priority date Publication date Assignee Title
CN1816209A (zh) * 2005-02-06 2006-08-09 华为技术有限公司 提高语音广播业务呼叫信道利用率的方法
EP1755349A1 (fr) * 2005-08-19 2007-02-21 Siemens Aktiengesellschaft Message texte ou multimédia service et réseau de communication mobile
US20090197537A1 (en) * 2005-08-23 2009-08-06 Nokia Siemens Networks Gmbh & Co, Kg Enhancing voice communication between a group of users in a network
CN1867172A (zh) * 2005-11-14 2006-11-22 华为技术有限公司 一种节约组呼信道资源的方法
CN101111009A (zh) * 2006-07-21 2008-01-23 华为技术有限公司 实现空闲信道资源及时释放的方法和组呼系统

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