WO2011009379A1

WO2011009379A1 - Method, apparatus and wireless communication system for controlling downlink discontinuous transmission state

Info

Publication number: WO2011009379A1
Application number: PCT/CN2010/075150
Authority: WO
Inventors: 王刚; 王景龙; 孙伟; 张帆; 孙鹏; 王瑶
Original assignee: 中国移动通信集团北京有限公司
Priority date: 2009-07-20
Filing date: 2010-07-14
Publication date: 2011-01-27
Also published as: CN101959317B; CN101959317A

Abstract

A method for controlling a downlink Discontinuous Transmission (DTX) state includes the following steps: after completing a channel allocation for a call, a network side controls the DTX state of a calling side to be off state when a DTX function is enabled and a called party does not answer; and controls the DTX state of the calling side to be on state after the called party answers. A corresponding base station, transcoder and wireless communication system are also provided by the present invention. The application of the present invention enables the downlink DTX state to be controlled correspondingly according to the current state of the call when the system enables the downlink DTX function; when in the ring tone phase, the downlink DTX state of the calling side is controlled to be off state in order to meet that the ring tone can be completely transmitted to the calling user during the ringing phase; when in the call phase, the downlink DTX state of the calling side is controlled to be on state, which can reduce the interference within the network and the waste of resources.

Description

Downlink discontinuous transmission state control method, device and wireless communication system

The present invention relates to the field of wireless communications, and in particular, to a downlink discontinuous transmission (DTX) state control method, and a corresponding base station, a transcoder (TC), and a wireless communication system. Background technique

DTX is a control technology used in Global System for Mobile Communications (GSM) to reduce system resource waste and intra-system interference. The principle is to generate a set of thresholds every 20ms of voice block time through voice activation detection (VAD) technology, to determine whether the next 20ms voice block is voice or noise. When it is judged as a voice block, the system will The data is transmitted in the normal transmission mode (260bit/20ms). When it is judged to be noise, the encoded background noise (also called comfort noise) is transmitted at a rate of 260bit/480ms, that is, the amount of data transmitted is greatly reduced.

DTX includes two states: on and off, that is, the system determines whether to use this technology in the communication process through parameter setting, and can be set separately according to the uplink and downlink as needed.

In the GSM system, the control parameters of the downlink DTX exist in the Mobile Service Switch Center (MSC) and the Base Station Controller (BSC), only when the parameters of both are set to the "on" state. The DTX function is activated, and either end is in the "off" state and the DTX function is not activated.

In the GSM mobile communication system, the downlink DTX function is actually implemented by the MSC, BSC, and Base Transceiver Station (BTS) control code converter (TC). The MSC informs the base station subsystem (Base Station Subsystem) by assigning the ADSIGNMENT REQUEST (GSM 08.08 3.2.1.1) and the downlink DTX flag Downlink DTX Flag (GSM 08.08 3.2.2.26) in the handover request HANDOVER REQUEST (GSM 08.08 3.2.1.8) message. , BSS) Whether the downlink DTX function can be used, BSC activates CHANNEL on the channel The ACTIVATION message informs the BTS whether the downlink DTX function can be used. The BTS informs the TC whether the downlink DTX function can be used by the C17 bit (GSM 08.60 3.1 & 3.4 & 3.5 & 4.6.6.2) in the uplink TRAU frame, when the MSC and the BSC are simultaneously allowed to use. When the DTX function is enabled, the downstream DTX function is activated. In the current system, once the session is established, the call in the BSC will always maintain a state in which the downlink DTX is turned on or off.

In the existing network, in order to improve the wireless environment and reduce intra-system interference, most mobile communication operators adopt uplink and downlink DTX technologies. When the calling party is a mobile subscriber, for the downlink DTX function, the link is always in the downlink DTX on state from the ringing of the called party to the end of the call.

When the mobile subscriber is the calling party, the existing DTX function is in the active state after the called ringing and before the call ends. For the normal voice after the called off-hook, the DTX function can meet the user's needs after opening; but due to the technical limitations of DTX, the detection of music or song has certain limitations, and its limitations mainly occur in the Called the ringing phase before going off-hook. Currently, mobile operators and fixed-line operators provide music ringtones, commonly known as "rings", before they are called off-hook. For some of the more soothing songs or songs, the DTX function turns on, and the pleasant ring tone that the caller should have heard becomes intermittent and the noise is serious, affecting the customer's perception, reducing the user's satisfaction with the service, and turning off the downlink DTX. After the function, the user perception is obviously improved, but once the downlink DTX function is turned off, the effect is that the problem of interference and resource waste will be further deteriorated during the entire subsequent call.

In summary, since the call state is not determined in the call flow of the prior art, when the system allows the downlink DTX function to be enabled, the downlink DTX function is already activated during the ringing phase before the called party answers, and then the services such as the CRBT. Have a serious impact. Summary of the invention

The embodiment of the present invention provides a downlink DTX state control method, which is used to solve the problem that the ring tone service quality in the ringing phase is affected after the downlink DTX function is enabled in the prior art; and the solution cannot be answered according to the called party in the prior art. The status of the downlink DTX state control problem.

The embodiment of the present invention further provides a corresponding base station, a code type converter, and a wireless communication system, which are used to solve the problem that the ring tone service shield amount affecting the ringing phase when the downlink DTX function is turned on in the prior art. And solving the problem that the downlink DTX state control cannot be performed according to the called response state in the prior art.

The downlink discontinuous transmission state control method provided by the embodiment of the present invention includes:

After the network side allocates the call completion channel, when the downlink discontinuous transmit DTX function is allowed and the called party does not answer, the control side call downlink discontinuous transmit DTX state is turned off;

After the called party answers, it controls the calling party's downlink DTX state to be on.

An embodiment of the present invention provides a base station, including:

a receiving unit, configured to receive identifier information transmitted by the base station controller BSC, where the identifier information includes: whether to allow downlink DTX identifier information of the downlink DTX function, call type identifier information indicating a calling call or called call, and indicating A response unit that is called to be answered; a sending unit, configured to transmit the received identification information to the pattern converter TC or the switched target TC.

An embodiment of the present invention further provides a base station, including: a receiving unit, a determining unit, a first sending unit, and a second sending unit;

The receiving unit is configured to receive the identifier information that is sent by the base station controller BSC, where the identifier information includes: whether to use the downlink DTX identifier information of the downlink DTX function, the call type identifier information indicating the calling call or the called call, and a response identification information indicating whether the called party has answered; receiving first DTX identification information allowing the use of the downlink DTX function, first call type identification information indicating the calling call, and first response identification information indicating that the called party is not answered When the judgment unit is activated;

The determining unit is configured to determine whether the called party has answered currently; when the called party does not answer, start the first sending unit, and when the called party has answered, start the second sending unit;

The first sending unit is configured to send the shutdown indication information to the pattern converter TC or the switched target TC;

The second sending unit is configured to send an open indication message to the TC or the switched target TC. The embodiment of the present invention provides a code type converter, including: a receiving unit, a determining unit, and a first a control unit and a second control unit;

The receiving unit is configured to receive the identifier information that is sent by the base station BTS, where the identifier information includes: whether to use the downlink DTX identifier information of the downlink DTX function, the call type identifier information indicating the calling call or the called call, and the indication The response identifier information of whether the response is acknowledged; the first DTX identification information indicating that the downlink discontinuous transmission DTX function is allowed to be used, the first call type identification information indicating the calling call, and the first response identifier indicating that the called party is not answered. Initiating the determining unit when the information is;

The determining unit is configured to determine, according to the uplink TRAU frame sent by the BTS, whether the called party responds, and when it is determined that the called party does not answer, start the first control unit, when it is determined that the called party has answered, Activating the second control unit;

The first control unit is configured to control the downlink DTX state of the calling side to be in an off state, and the second control unit is configured to control that the downlink DTX state of the calling side is an open state.

An embodiment of the present invention further provides a code type converter, including: a receiving unit, a first control unit, and a second control unit;

The receiving unit is configured to receive the shutdown indication information sent by the base station BTS, start the first control unit, and receive the opening indication information sent by the BTS, and start the second control unit; the first control unit, The second control unit is configured to control the downlink DTX state of the calling side or the called side to be in an open state. The embodiment of the present invention provides a wireless communication system, including: a mobile switching center MSC, a base station controller BSC, a base station BTS, and a code converter TC;

The MSC is configured to send the identifier information to the BSC, where the identifier information includes: whether to use the downlink DTX identifier information of the downlink DTX function, the call type identifier information indicating the calling call or the called call, and the called party Whether the response identification information has been answered;

The BSC, configured to transmit the received identification information to the BTS;

The BTS, configured to transmit the received identification information to the TC;

The TC, configured to receive first DTX identification information that allows the use of the downlink DTX function, first call type identification information indicating a calling call, and a first response identifier indicating that the called party does not answer In the case of information, the downlink DTX state of the calling side is controlled to be in an off state; and when the uplink TRAU frame sent by the BTS is detected to indicate that the called party has answered, the downlink DTX state of the calling side is controlled to be in an open state.

The embodiment of the present invention further provides a wireless communication system, including: a mobile switching center MSC, a base station controller BSC, a base station BTS, and a pattern converter TC;

The BTS, when receiving the first DTX identification information that allows the use of the downlink DTX function, the first call type identification information indicating the calling call, and the first response identification information indicating that the called party does not answer, determining the current status of the called party Whether it has been answered, when the called party does not answer, sends a shutdown indication message to the TC; when the called party has answered, sends an opening indication message to the TC;

The TC is configured to receive the shutdown indication information sent by the BTS, and control the downlink DTX state of the calling side to be in an off state; or receive the opening indication information sent by the BTS, and control the downlink DTX state of the calling side to be in an open state.

According to the present invention, when the downlink DTX function is allowed, according to the current state of the call, the called unanswered state (that is, the ringing phase before the called off-hook) or the called answered state, when in the ringing phase, Controlling the downlink DTX state of the calling side is off state, that is, the calling terminal downlink DTX function is not activated, and the ring tone is completely transmitted to the calling user; when in the call phase, the downlink DTX state is controlled to be on, that is, activated. The downlink DTX function is used to reduce interference and waste of resources in the network during the user's call. Therefore, the present invention overcomes the problem that the downlink DTX state can only be in the same state in the same downlink DTX state after the called ringing to the end of the call in the prior art. When the system allows the downlink DTX function to be used, the downlink DTX state is always on. Otherwise, it is always off state, so that when the system allows the use of the downlink DTX function, the downlink DTX state can be controlled according to the current state of the call, and the ring tone can be completely transmitted to the calling user when the ringing phase is satisfied. In addition, the user can reduce the interference and waste of resources in the network during the call phase. DRAWINGS

FIG. 1 is a flowchart of a method for controlling a downlink DTX state according to an embodiment of the present invention;

2 is a schematic structural diagram of a base station according to an embodiment of the present invention;

3 is a schematic structural diagram of a code converter according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a wireless communication system according to an embodiment of the present disclosure;

FIG. 5 is a second schematic structural diagram of a base station according to an embodiment of the present disclosure;

6 is a second schematic structural diagram of a code converter according to an embodiment of the present invention;

FIG. 7 is a second schematic structural diagram of a wireless communication system according to an embodiment of the present invention. detailed description

The method, related device and system provided by the present invention will be described in detail below with reference to the accompanying drawings.

The downlink DTX state control method provided by the present invention includes:

After the network side allocates the call completion channel, when the downlink DTX function is allowed and the called party has not answered, the DTX state of the calling side is controlled to be off state; when the called party answers, the DTX state of the calling party is controlled to be in the on state.

FIG. 1 is a flowchart of a downlink DTX state control method provided by the present invention when the downlink DTX function is allowed to be used, including:

Step S101: The network side completes channel allocation for the call;

Step S102: Control the downlink DTX state of the calling side to be in a closed state;

Step S103: Ringing to the called party, and simultaneously sending back a ring tone to the calling party;

Step S104, determining whether the called party has picked up the answer, if not, go to step S102; if yes, go to step S105;

Step S105: Control the calling party downlink DTX state to be in an open state.

The downlink DTX state control method provided by the present invention is specifically described below in conjunction with the network elements in the GSM network. Example 1:

The TC participates in determining whether the called party has answered, and controls the downlink DTX state to be in an on state or a closed state according to the judgment result and the received identification information. Specifically include:

The MSC sends identification information to the BSC when the call is established, and the identifier information includes: whether to allow downlink DTX identification information of the downlink DTX function, call type identification information indicating the calling or called call, and whether the called party has answered. Responding to the identification information; the identification information is transmitted by the BSC to the BTS, and then transmitted by the BTS to the TC;

When the TC receives the first DTX identification information that allows the use of the downlink DTX function, the first call type identification information indicating the calling call, and the first response identification information indicating that the called party does not answer, the downlink DTX status of the calling party is controlled to be When the uplink TRAU frame sent by the BTS is detected to indicate that the called party has answered, the downlink DTX state of the calling side is controlled to be in an open state;

When the TC receives the first DTX identification information and the second call type identification information indicating the called call, controlling the called side downlink DTX state to be in an open state;

When the TC receives the second DTX identification information and the first call type identification information that are not allowed to use the downlink DTX function, the downlink DTX state of the calling side is controlled to be in an off state;

When the TC receives the second DTX identification information and the second call type identification information that are not allowed to use the downlink DTX function, the downlink DTX state of the called side is controlled to be in an off state.

Here is a specific example of signaling interaction:

The MSC can determine whether the user of the A interface circuit resource is a calling event or a called event, and records the call type identifier (Call_type_flag_msc), Call_type_flag_msc=0 indicates the calling call, ie For the first call type identification information, Call_type_flag_msc=l indicates the called call, that is, the second call type identification information. The MSC can monitor and record whether the called party responds. When the status changes, the response identifier Update_flag_msc, Answer_flag_msc=0 indicates that the called party does not answer, that is, the first response identifier information, Answer_flag_msc= l indicates that the called party has answered, that is, the second response identification information.

The MSC can pass the DTX function, the call type identifier (Call_type_flag_msc) and the response identifier (Answer_flag_msc) to the BSC. In a specific application, the MSC transmits the Downlink DTX Flag information to the BSS through the ASSIGNMENT REQUEST message when the call is established, wherein the Downlink DTX Flag bitl indicates whether the BSS can use the downlink DTX function (as in the prior art), and bit 2 to bit 8 are idle bits. As an example, in order to implement the call type identifier and the response identifier to the BSC, bit 2 may be redefined as Call_type_flag_msc, and bit3 is Answer_flag_msc. When Call_type_flag_msc=0, it indicates the calling call. When Call_type_flag_msc=l, it indicates the called call. When Answer_flag_msc=0, the called party does not answer, when Answer_flag_msc= l indicates that the called party has answered. This information can be interpreted by the BSS system with the corresponding function, and the BSS system without the corresponding function will ignore it without any influence.

The BSC receives, interprets, stores, updates the call type identifier (Call_type_flag_msc) and the response identifier (Agreement_flag_msc), and stores the call type identifier (Call_type_flag_bsc) and the response identifier ( Answer) on the BSC side. —flag— bsc ).

The BSC transmits the call type identifier (Call_type_flag_bsc) and the response identifier (Answer_flag_bsc) and whether the DTXd of the downlink DTX function is allowed to be transmitted to the BTS.

In the specific application, when the BSC informs the BTS to activate the transmission channel (TCH) through the CHANNEL ACTIVATION message, it will transmit the DTXd parameter to inform whether the downlink DTX function (current technology) is allowed. The bit 3 to bit 8 of the third octet (octet3) where the DTXd is located in the CHANNEL ACTIVATION message is a reserved bit (bit), which is not used yet. As an example, in order to implement the call type identifier and the response identifier to the BTS , you can redefine bit3 as Call_type_flag-bsc, and define bit4 as Answer_flag-bsc. For BTS with corresponding function, you can interpret the information, and the BTS system without corresponding function will ignore it. Any impact.

The BTS transmits the call type identifier (Call_type_flag_bsc) and the response identifier (Agreement_flag_bsc) and whether the DTXd of the downlink DTX function is allowed to be transmitted to the TC.

In a specific application, when the BTS sends a TRAU frame to the TC, it transmits a DTXd parameter to inform whether the downlink DTX function is allowed to be used (prior art), and C18 to C21bit in the TRAU frame are idle bits. As an example, in order to implement the call The type identifier and response identifier are passed to the TC, which can Redefine CI 8 as Call_type_flag_bsc, and define C19 as Answer_flag_bsc.

The TC determines whether to enable the downlink TDX function according to the Call_type_flag_bsc, Answer-flag-bsc, and DTXd parameters received from the uplink TRAU frame. These include the following:

Situation 1:

When the TC receives Call_type_flag_bsc=0, Answer_flag_bsc=l, DTXd=l (the case where the called party has responded is generally the MSC record after the MSC handover or BSC handover occurs during the call. The called party's response status has changed, that is, the called unanswered status changes to the called responded status), indicating that the downlink DTX function is allowed to be used, the calling call flow is called and the called party has answered, then the TC directly controls the calling side downlink DTX. The status is on, and the DTX function of the calling side is activated.

Case 2:

When the TC receives Call_type_flag_bsc=0, Answer_flag-bsc-0, DTXd=l (this situation is generally the start-up phase), it indicates that the downlink DTX function is allowed to be used as the calling call flow and is If the call is not answered, the DTX state of the calling side is controlled to be off, and the uplink TRAU frame sent by the BTS is monitored. When the call uplink TRAU frame is converted from the idle speech frame to the normal speech frame (Speech Frame) When the called party does not answer, the BTS sends an Idle Speech Frame to the TC. When the BTS detects the uplink voice frame, it sends a Speech Frame to the TC. The signaling process is prior art, and it is determined that the called party has answered. Control the downlink DTX status of the calling side to be on, and activate the downlink DTX function.

Situation 3:

When the TC receives Call_type_flag_bsc=l, Answer_flag_bsc=l or 0, DTXd=l, it indicates that the downlink DTX function is allowed. For the called call flow, regardless of whether the called party currently responds, Both control the downlink DTX state of the called side to be on, and activate the downlink DTX function.

Other situations:

When the TC receives DTXd=0, Call_type_flag_bsc=0, indicating the calling call flow and does not allow the downlink DTX function, the DTX state of the calling side is controlled to be off regardless of whether the called party responds or not;

When the TC receives DTXd=0, Call_type_flag_bsc=l, it indicates the called call flow and does not allow If the downlink DTX function is used, the downlink DTX state of the called side is controlled to be off regardless of whether the called party answers or not.

During the actual call, no matter whether the caller or the called party is involved, there may be a cell handover, a BSC handover or an MSC handover due to the mobile. After the handover occurs, the target TC after the handover should also be able to refer to the current call. The state controls the on and off of the downstream DTX state.

When the identifier information sent by the MSC received by the BSC includes the first response identifier information indicating that the called party does not answer, the BSC detects the CONNECT message, determines whether the called party has answered, and updates the response identifier in the received identifier information according to the judgment result. Information, generating updated identification information.

When the target cell handover occurs in the BSC, the BSC sends the updated identification information to the target BTS after the handover, and then the target BTS transmits the target TC to the handover target TC. In practical applications, as mentioned above, the BSC can pass the Call_type_flag_bsc, Answer-flag-bsc, and DTXd parameters to the target BTS through the CHANNEL ACTIVATION message.

When the handover between the BSCs occurs, the MSC sends the identification information to the target BSC after the handover (the identification information sent at this time may be different from the identification information sent by the MSC to the BSC before the handover; because the response identification information is initially initiated during the call initiation phase) The first response identification information corresponding to when the called party does not answer; when the handover occurs, the called party may have responded currently, and the corresponding response identifier information will be changed to the second response identifier information corresponding to the called party when the called party has responded) , is transmitted from the target BSC to the target BTS after the handover, and then transmitted by the target BTS to the target T after the handover (in the actual application, the MSC can transmit the Downlink DTX Flag information to the BSS through the handover request HANDOVER REQUEST message when switching across the BSC. (Prior Art), Downlink DTX Flag bitl indicates whether the BSS can use the downlink DTX function, and bit 2 to bit 8 are idle bits. As an example, bit 2 can be redefined as Call_type_flag_msc, bit3 is Answer_flag_msc When Call_type_flag_msc=0, the calling call is called, when Call_type_flag_msc=l Indicates the called call. When Answer_flag—msc=0, the called party does not answer. When Answer_flag—msc=l indicates that the called party has answered. For the BSS system with the corresponding function, the information can be interpreted without The corresponding function of the BSS system will ignore it and will not be affected.

When a handover between MSCs occurs, the MSC before handover transmits a flag to the target MSC after handover. The identification information (the identification information sent at this time may be different from the identification information sent by the MSC to the BSC before handover) is transmitted by the target MSC to the target BSC after handover, and is transmitted by the target BSC to the target BTS after handover, and then transmitted by the target BTS. To the target TC after switching. In practical applications, the MSC before handover can transmit the Call_type_flag_msc, Answer_flag_msc and Downlink DTX Flag parameters to the target MSC through MAP_ PREPARE_HANDOVER (A-HANDOVER REQUEST), and the target MSC passes it to the target BSC. , finally passed to the target TC.

The corresponding processing method after the target TC receives the different combinations of the DTX identification information, the call type identification information, and the response identification information is the same as the foregoing TC, and is not described again.

Example 2:

The BTS determines whether the called party has answered, and according to the judgment result and the received identification information, notifies the TC to control whether the downlink DTX state is the on state or the off state. Specifically include:

The MSC sends identification information to the BSC when the call is established, and the identifier information includes: whether to allow downlink DTX identification information of the downlink DTX function, call type identification information indicating the calling or called call, and whether the called party has answered. Answering the identification information, the BSC transmits the identification information to the BTS;

When the BTS receives the first DTX identification information that allows the downlink DTX function, the first call type identification information indicating the calling call, and the first response identification information indicating that the called party does not answer, it determines whether the called party has answered currently. When the called party does not answer, send a shutdown indication message to the TC; when the called party has answered, send an opening indication message to the TC; after receiving the shutdown indication information, the TC controls the downlink DTX state of the calling side to be in a closed state; or TC receiving After the indication information is turned on, the downlink DTX state of the calling side is controlled to be on;

When the BTS receives the first DTX identification information, the first call type identification information, and the second response identification information indicating that the called party has responded, the BTS sends the opening indication information to the TC; the TC controls the calling side downlink DTX state to be the on state. ;

When the BTS receives the first DTX identification information and the second call type identification information indicating the called call, the BTS sends the opening indication information to the TC; the TC controls the downlink DTX state of the called side to be in an open state; The second DTX identification information and the first call of the DTX function When the type identification information is called, the shutdown indication information is sent to the TC; the TC controls the downlink DTX state of the calling side to be the off state;

When the BTS receives the second DTX identification information and the second call type identification information, the BTS sends the shutdown indication information to the TC; the TC controls the downlink DTX state of the called side to be the closed state.

The main difference between Embodiment 2 and Embodiment 1 is that: In Embodiment 2, the BTS can identify the call type (Call_type_flag_bsc) and the response identifier (Answer_flag_bsc) according to the received call type. The downlink DTX function flag DTXd and whether the called party is currently answering, determine whether the TC is required to enable or disable the downlink DTX function.

In practical applications, DTXd' can be introduced, which corresponds to C 17bit in the uplink TRAU frame. When the BTS sends a TRAU frame to the TC, the BTX transmits a DTXd' parameter to inform whether to use the downlink DTX function. Specific situations include:

Situation 1:

When the BTS is connected to the call_type_flag_bsc=0, Answer_flag_bsc=l, DTXd=l, it indicates that the received identification information is: Allow the downlink DTX function, the calling call flow and the called Answer: The BTS directly sets DTXd, and =1 indicates that the indication information needs to be sent to the TC. The BTS transmits the DTXd and the =1 parameter to the TC through the C17bit in the uplink TRAU frame, and requests the TC to control the downlink DTX state to be on, and activate the downlink DTX. Features.

Case 2:

When the BTS connects *| owes to Call_type_flag_bsc=0, Answer_flag_bsc=0, DTXd=l, it indicates that the received identification information is: Allows the use of the downlink DTX function, the calling call flow and the called party has not yet answered; BTS judgment is Whether the current answer has been answered. When the called party has not answered yet, set DTXd, =0, which means that the downlink DTX function is not allowed to be enabled. The BTS transmits the DTXd'=0 parameter to the TC through the C17 bit in the uplink TRAU frame, and requests the TC to control the downlink DTX state to be off state, and does not activate the downlink DTX function. After the subsequent BTS detects the called response, it sets DTXd, =l, and transmits DTXd and =1 parameters to the TC through the C17bit in the uplink TRAU frame. The TC is required to control the downlink DTX state to be on, and activate the downlink DTX function.

There are various ways for the BTS to determine whether the called party is currently responding, for example: Manner 1: The BTS monitors the uplink TRAU frame of the call. When the uplink TRAU frame is converted from the Idle Speech Frame to the Speech Frame, it determines that the called party has answered. Otherwise, it determines that the called party does not answer.

Manner 2: The BTS monitors the CONNECT message in the downlink signaling of the call. When the CONNECT message sent by the BSC is detected, it is determined that the called party has answered. Otherwise, the called party is not answered.

Situation 3:

When the BTS is connected to Call_type_flag_bsc=l, Answer_flag_bsc=l or 0, DTXd=l, it indicates that the received identification information is: Allow the downlink DTX function to be used, and the called call flow, regardless of If the called party responds, DTXd'=l is set. The BTS transmits the DTXd and the =1 parameter to the TC through the C17bit in the uplink TRAU frame. The TC is required to control the downlink DTX state of the called side to be on, and activate the called DTX function on the called side. .

Other situations:

When the BTS receives DTXd=0, all_type_flag_bsc=0, it indicates that the calling call is not allowed to use the downlink DTX function, and DTXd'=0 is set. By transmitting C17bit in the uplink TRAU frame, the DTXd'=0 parameter is transmitted to the TC, and the TC is required to be controlled. The DTX state of the calling side is off.

When the BTS receives DTXd=0, all_type_flag_bsc=l, it indicates that the called party is not allowed to use the downlink DTX function, set DTXd'=0, transmit the DTXd'=0 parameter to the TC through the C17bit in the uplink TRAU frame, and request the TC control. The called side downlink DTX state is off.

Similar to the first embodiment, in the second embodiment, during the actual call conversation, whether the calling party or the called party may have a cell handover, a BSC handover, or an MSC handover due to the mobile, when the handover occurs, the handover should be made. The subsequent target TC can also control the opening and closing of the downlink DTX state according to the current call state.

When the identifier information sent by the MSC received by the BSC includes the first response identifier information indicating that the called party does not answer, the BSC detects the CONNECT message, determines whether the called party has answered, and updates the response identifier in the received identifier information according to the judgment result. Information, generating updated identification information. When the target cell handover occurs in the BSC, the updated identification information is transmitted by the BSC to the switched target. BTS;

When the handover between the BSCs occurs, the MSC sends the identification information to the target BSC after the handover, and then the target BSC transmits the identification information to the target BTS after the handover;

When the handover between the MSC occurs, the MSC before the handover sends the identification information to the target MSC after the handover, and then the target MSC transmits the target BSC to the target BSC, and the target BSC is transmitted to the target BTS after the handover;

The corresponding processing method after the target BTS receives the different combinations of the DTX identification information, the call type identification information, and the response identification information is the same as the BTS, and is not described again.

Based on the same inventive concept, according to the downlink DTX state control method provided by the foregoing embodiment 1, the present invention provides a base station having a corresponding function, and the schematic structural diagram thereof is as shown in FIG. 2, including: a receiving unit 21, configured to receive a BSC transmission. Identification information, the identifier information includes: whether to allow downlink DTX identification information of the downlink DTX function, call type identification information indicating a calling or called call, and response identification information indicating whether the called party has answered;

The sending unit 22 is configured to transmit the received identification information to the TC or the switched target TC. According to the same inventive concept, according to the downlink DTX state control method provided by the above-mentioned Embodiment 1, the present invention further provides a code converter having a corresponding function, and a schematic structural diagram thereof is shown in FIG. 3, including: a receiving unit 31, a determining unit 32. A first control unit 33 and a second control unit 34; wherein:

The receiving unit 31 is configured to receive the identifier information that is transmitted by the BTS, where the identifier information includes: whether to use the downlink DTX identifier information of the downlink DTX function, the call type identifier information indicating the calling call or the called call, and whether the called party has Answering identification information of the response; when receiving the first DTX identification information allowing the use of the downlink discontinuous transmission DTX function, the first call type identification information indicating the calling call, and the first response identification information indicating that the called party is not answered, Start determination unit 32;

The determining unit 32 is configured to determine whether the called party responds according to the uplink TRAU frame sent by the BTS, and when it is determined that the called party does not answer, start the first control unit 33, and when determining that the called party has answered, start the second control. Unit 34; The first control unit 33 is configured to control the downlink DTX state of the calling side to be in an off state, and the second control unit 34 is configured to control the downlink DTX state of the calling side to be an open state.

In a specific application, the receiving unit 31 is further configured to:

When receiving the first DTX identification information, the first call type identification information, and the second response identification information indicating that the called party has responded, the second control unit 34 is activated;

When the first DTX identification information and the second call type identification information indicating the called call are received, the second control unit 34 is activated;

When the second DTX identification information and the first call type identification information that are not allowed to use the downlink DTX function are received, the first control unit 33 is activated;

When the second DTX identification information and the second call type identification information are received, the first control unit 33 is activated;

The first control unit 33 is further configured to control the downlink DTX state of the called side to be in an off state, and the second control unit 34 is further configured to control the downlink DTX state of the called side to be an open state.

Based on the same inventive concept, according to the downlink DTX state control method provided by the foregoing embodiment 1, the present invention further provides a wireless communication system having a corresponding function, and the schematic structural diagram thereof is as shown in FIG. 4, including: MSC 41, BSC 42, BTS 43 and TC 44;

The MSC 41 is configured to send the identifier information to the BSC 42. According to different networking structures, when the TC 44 is connected between the MSC 41 and the BSC 42 and transparently transmitted through the TC 44, the identifier information includes: whether the downlink is allowed to be used. Downlink DTX identification information of the DTX function, call type identification information indicating a calling call or called call, and response identification information indicating whether the called party has answered;

BSC 42, for transmitting the received identification information to the BTS 43;

The BTS 43 is configured to transmit the received identification information to the TC 44 (according to different networking structures, when the TC 44 is connected between the MSC 41 and the BSC 42, the signaling interaction between the BTS 43 and the TC 44 passes through the BSC 43 Penetrate);

The TC 44 is configured to: when receiving the first DTX identification information that allows the downlink DTX function, the first call type identification information indicating the calling call, and the first response identification information indicating that the called party does not answer, controlling the calling side to downlink The DTX state is off; and when the BTS 43 is detected to be sent subsequently The uplink TRAU frame indicates that when the called party has answered, the downlink DTX state of the calling side is controlled to be on. TC 44 is also used to:

When receiving the first DTX identification information, the first call type identification information, and the second response identification information indicating that the called party has answered; controlling the downlink DTX state of the called side to be in an open state;

When receiving the first DTX identification information and the second call type identification information indicating the called call, controlling the downlink DTX state of the called side to be an open state;

When receiving the second DTX identification information and the first call type identification information that are not allowed to use the downlink DTX function, controlling the downlink DTX state of the calling side to be in a closed state;

When the second DTX identification information and the second call type identification information are received, the DTX state of the called party is controlled to be in a closed state.

Based on the same inventive concept, according to the downlink DTX state control method provided in the foregoing embodiment 2, the present invention provides a base station having a corresponding function, and a schematic structural diagram thereof is shown in FIG. 5, including: a receiving unit 51, a determining unit 52, and a first Transmitting unit 53 and second transmitting unit 54;

The receiving unit 51 is configured to receive the identifier information that is sent by the BSC, where the identifier information includes: whether to use the downlink DTX identifier information of the downlink DTX function, the call type identifier information indicating the calling call or the called call, and whether the called party has The response identification information of the response; when the first DTX identification information allowing the use of the downlink DTX function, the first call type identification information indicating the calling call, and the first response identification information indicating that the called party is not answered are received, the determining unit is activated. The determining unit 52 is configured to determine whether the called party has answered currently; when the called party does not answer, the first sending unit 53 is started, and when the called party has answered, the second sending unit 54 is started;

The first sending unit 53 is configured to send the closing indication information to the TC or the switched target TC; the second sending unit 54 is configured to send the opening indication information to the TC or the switched target TC. In a specific application, the receiving unit 52 is further configured to:

When receiving the first DTX identification information, the first call type identification information, and the second response identification information indicating that the called party has answered; the second sending unit 54 is activated;

When the first DTX identification information and the second call type identification information indicating the called call are received, the second sending unit 54 is activated; When the second DTX identification information and the first call type identification information that are not allowed to use the downlink DTX function are received, the first sending unit 53 is activated;

When the second DTX identification information and the second call type identification information are received, the first transmitting unit 53 is activated.

According to the same inventive concept, according to the downlink DTX state control method provided by the above-mentioned Embodiment 2, the present invention further provides a code converter having a corresponding function, and a schematic structural diagram thereof is shown in FIG. 6, including: a receiving unit 61, a first Control unit 62 and second control unit 63;

The receiving unit 61 is configured to receive the shutdown indication information sent by the BTS, start the first control unit 62, and receive the opening indication information sent by the BTS, and start the second control unit 63;

The first control unit 62 is configured to control the downlink/called side downlink DTX state to be in a closed state, and the second control unit 63 is configured to control the calling side/called side downlink DTX state to be in an open state. Based on the same inventive concept, according to the downlink DTX state control method provided in the foregoing embodiment 2, the present invention further provides a wireless communication system having a corresponding function, and a schematic structural diagram thereof is shown in FIG. 7, including: MSC 71, BSC 72, BTS 73 and TC 74;

The MSC 71 is configured to send the identifier information to the BSC 72 (according to different networking structures, when the TC 74 is connected between the MSC 71 and the BSC 72, transparently transmitted through the TC74), the identifier information includes: whether the downlink DTX function is allowed to be used. Downlink DTX identification information, call type identification information indicating a calling or called call, and response identification information indicating whether the called party has answered;

BSC 72, configured to transmit the received identification information to the BTS 73;

The BTS 73 is configured to: when receiving the first DTX identification information that allows the downlink DTX function, the first call type identification information indicating the calling call, and the first response identification information indicating that the called party does not answer, determining whether the called party is currently Answered, when the called party does not answer, sends a shutdown indication message to the TC 74; when the called party has answered, sends an opening indication message to the TC 74; (Depending on different networking structures, when the TC 74 is connected to the MSC 74 and the BSC When between 74, the signaling interaction between BTS 73 and TC 74 is transparently transmitted through BSC 73);

The TC 74 is configured to receive the shutdown indication information sent by the BTS 73, and control the downlink DTX state of the calling side to be in an off state; or receive the opening indication information sent by the BTS 73 to control the downlink DTX of the calling side. The status is on.

In specific applications, BTS 73 is also used to:

Receiving the first DTX identification information, the first call type identification information, and the second response identification information indicating that the called party has answered, sending the opening indication information to the TC 74;

Receiving the first DTX identification information and the second call type identification information indicating the called call, sending the opening indication information to the TC 74;

Receiving the second DTX identification information and the first call type identification information that are not allowed to use the downlink DTX function, sending the shutdown indication information to the TC 74;

Receiving the second DTX identification information and the second call type identification information, sending the shutdown indication information to the TC 74;

The TC 74 is also used to control the DTX state of the called side to be in the off state, or to control the DTX state of the called side to be in the on state.

In summary, according to the present invention, when the downlink DTX function is allowed, and the call is in the ringing phase, the downlink DTX state of the calling side is controlled to be off state, that is, the calling terminal downlink DTX function is not activated, and the ring tone is guaranteed to be complete. It is transmitted to the calling user side; when in the call phase, the downlink DTX state is controlled to be on, that is, the downlink DTX function is activated, so as to reduce interference and waste of resources in the network during the user's call. The downlink DTX state can be correspondingly controlled according to the current state of the call, which not only satisfies the ring tone can be completely transmitted to the calling user side during the ringing phase, but also enables the user to reduce the interference and waste of resources in the network during the call phase. The spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of the inventions

Claims

Rights request

A downlink discontinuous transmission state control method, comprising:

After the network side allocates the call completion channel, when the downlink discontinuous transmit DTX function is allowed and the called party does not answer, the control side call downlink discontinuous transmit DTX state is turned off; and when the called party answers, the caller side is controlled. The downlink DTX state is on.

2. The method according to claim 1, wherein the method specifically comprises:

The network side transmits the identification information to the code converter TC corresponding to the call; the identifier information includes: whether to allow downlink DTX identification information of the downlink DTX function, call type identification information indicating the calling call or the called call, and a response identification information indicating whether the called party has answered; when the TC receives the first DTX identification information allowing the use of the downlink DTX function, the first call type identification information indicating the calling call, and the first indicating that the called party does not answer When the identification information is acknowledged, the downlink DTX state of the calling side is controlled to be in an off state; when the TC detects the called response, the downlink DTX state of the calling side is controlled to be in an open state.

The method of claim 2, wherein the transmitting, by the network side, the identification information to the code converter TC corresponding to the call includes:

The mobile switching center MSC sends the identification information to the base station controller BSC when the call is established, and the identification information is transmitted by the BSC to the base station BTS, and then transmitted by the BTS to the TC;

After the TC detects the called response, it controls the downlink DTX state of the calling side to be in an open state, which specifically includes:

The TC monitors that the uplink TRAU frame sent by the BTS indicates that the called party has responded, and controls the downlink DTX state of the calling side to be in an open state.

The method according to claim 3, wherein when the identifier information received by the BSC includes the first response identifier information indicating that the called party does not answer, the method further includes: the BSC detecting the CONNECT message Determining whether the called party has answered; and updating the received response identification information in the received identification information according to the judgment result, and generating updated identification information; When the target cell handover occurs in the BSC, the method further includes:

Sending, by the BSC, the updated identification information to the target BTS after the handover, and then transmitting the target BTS to the target TC after the handover;

When the target TC receives the first DTX identification information, the first call type identification information, and the first response identification information, controlling the downlink DTX state of the calling side to be in a closed state, and monitoring the location The uplink TRAU frame sent by the target BTS indicates that when the called party has answered, the downlink DTX state of the calling party is controlled to be on; or

When the target TC receives the first DTX identification information, the first call type identification information, and the second response identification information indicating that the called party has responded, the downlink DTX state of the calling party is controlled to be in an open state.

The method according to claim 3, wherein when the switching between the BSCs occurs, the method further includes:

Sending, by the MSC, the identifier information to the target BSC after the handover, the identifier information is transmitted by the target BSC to the target BTS after the handover, and then transmitted by the target BTS to the target TC after the handover;

When the target TC receives the first DTX identification information, the first call type identification information, and the first response identification information, controlling the downlink DTX state of the calling side to be in a closed state, and monitoring the location The uplink TRAU frame sent by the target BTS indicates that the called party has the downlink DTX state turned on when the called party has answered; or

The method according to claim 3, wherein when the handover between the MSCs occurs, the method further includes:

Sending, by the MSC, the identifier information to the target MSC after the handover, the identifier information is transmitted by the target MSC to the target BSC after handover, and is transmitted by the target BSC to the target BTS after handover, and then the target The BTS is transmitted to the target TC after switching; When the target TC receives the first DTX identification information, the first call type identification information, and the first response identification information, controlling the downlink DTX state of the calling side to be in a closed state, and monitoring the location The uplink TRAU frame sent by the target BTS indicates that the called party has the downlink DTX state turned on when the called party has answered; or

The method according to any one of claims 2-6, wherein when the TC or the target TC receives the first DTX identification information and the second call type identification information indicating the called call , controlling the DTX state of the called side to be on; or

When the TC or the target TC receives the second DTX identification information and the first call type identification information that are not allowed to use the downlink DTX function, controlling the downlink DTX state of the calling side to be in a closed state; or

And when the TC or the target TC receives the second DTX identification information and the second call type identification information, controlling the called side downlink DTX state to be in an off state.

8. The method according to claim 1, wherein the method specifically comprises:

When the call is established, the MSC sends the identifier information to the base station controller BSC, where the identifier information includes: whether to allow the downlink DTX identification information of the downlink DTX function, the call type identifier information indicating the calling or called call, and the indication Responding to the acknowledgement identification information that has been answered; the identification information is transmitted by the BSC to the base station BTS;

The BTS determines whether the called party currently responds when receiving the first DTX identification information that allows the downlink DTX function, the first call type identification information indicating the calling call, and the first response identification information indicating that the called party does not answer. Sending a shutdown indication message to the TC when the called party does not answer; sending an opening indication message to the TC when the called party has answered;

The TC controls the downlink DTX state of the calling side to be in an off state according to the shutdown indication information; or the TC controls the downlink DTX state of the calling side to be an open state according to the opening indication information.

9. The method of claim 8 wherein: said flag received by said BSC When the information includes the first response identifier information indicating that the called party does not answer, the method further includes: the BSC detecting the CONNECT message, determining whether the called party has answered, and updating the received response identifier information in the received identifier information according to the determination result. , generating updated identification information;

When the target cell handover occurs in the BSC, it also includes:

Sending, by the BSC, the updated identification information to the target BTS after the handover;

When the target BTS receives the first DTX identification information, the first call type identification information, and the first response identification information, it is determined whether the called party has answered currently, and when the called party does not answer, The target TC after the switch sends the shutdown indication information; when the called party has answered, sends the indication information to the target TC; the target TC controls the downlink DTX state of the calling side to be off according to the shutdown indication information; or The target TC controls the downlink DTX state of the calling side to be an open state according to the opening indication information;

When the target BTS receives the first DTX identification information, the first call type identification information, and the second response identification information indicating that the called party has responded, the target BTS sends an opening indication to the target TC. Information: The target TC controls the downlink DTX state of the calling side to be an open state.

The method according to claim 8, wherein when the switching between the BSCs occurs, the method further includes:

The MSC sends the identifier information to the target BSC after the handover, and the identifier information is transmitted by the target BSC to the target BTS after the handover;

When the target BTS receives the first DTX identification information, the first call type identification information, and the first response identification information, determine whether the called party has answered, and when the called party does not answer, switch to The target TC sends the shutdown indication information; when the called party has answered, sends the indication information to the target TC; the target TC is in the shutdown indication information, and controls the downlink DTX state of the calling side to be the off state; The target TC controls the downlink DTX state of the calling side to be an open state according to the opening indication information;

When the target BTS receives the first DTX identification information, the first call type identification information, and the second response identification information indicating that the called party has responded, the target BTS is to the target The target TC sends an open indication message; the target TC controls the downlink DTX state of the calling side to be an open state.

The method according to claim 8, wherein when the handover between the MSCs occurs, the method further includes:

Sending, by the MSC, the identifier information to the target MSC after the handover, the identifier information is transmitted by the target MSC to the target BSC after the handover, and is transmitted by the target BSC to the target BTS after the handover;

When the target BTS receives the first DTX identification information, the first call type identification information, and the first response identification information, it is determined whether the called party has answered currently, and when the called party does not answer, The target TC after the handover sends the shutdown indication information; when the called party has answered, sends the indication information to the target TC; the target TC is in the shutdown indication information, and controls the downlink DTX state of the calling side to be the off state; or The target TC is in the opening indication information, and controls the downlink DTX state of the calling side to be an open state;

The method according to any one of claims 8 to 11, wherein when the BTS or the target BTS detects a speech frame, it determines that the called party has answered, otherwise it determines that the called party does not answer; or

When the BTS detects the connection CONNECT message sent by the BSC, or the target BTS detects the CONNECT message sent by the target BSC, it determines that the called party has answered, otherwise it determines that the called party does not answer.

The method according to any one of claims 8-11, wherein when the BTS or the target BTS receives the first DTX identification information and the second call type identification information indicating the called call Sending an opening indication message to the TC or the target TC; the TC or the target TC controlling the downlink DTX state of the called side to be in an open state; or

When the BTS or the target BTS receives a second that does not allow the use of the downlink DTX function And when the DTX identification information and the first call type identification information are sent, the shutdown indication information is sent to the TC or the target TC; the TC or the target TC controls the downlink DTX state of the calling side to be in a closed state; or

When the BTS or the target BTS receives the second DTX identification information and the second call type identification information, sending the shutdown indication information to the TC or the target TC; the TC or the target TC controls the called party The side downlink DTX state is off.

A base station, comprising:

a receiving unit, configured to receive identifier information transmitted by the base station controller BSC, where the identifier information includes: whether to allow downlink DTX identifier information of the downlink DTX function, call type identifier information indicating a calling call or called call, and indicating The response identifier information of whether the response has been sent; the sending unit is configured to transmit the received identification information to the pattern converter TC or the switched target TC:.

A base station, comprising: a receiving unit, a determining unit, a first transmitting unit, and a second sending unit;

The second sending unit is configured to send an opening indication message to the TC or the switched target TC

The base station according to claim 15, wherein the receiving unit is further configured to: Receiving the first DTX identification information, the first call type identification information, and the second response identification information indicating that the called party has responded; starting the second sending unit; or

And when the first DTX identification information and the second call type identification information indicating the called call are received, starting the second sending unit; or

The first sending unit is activated when receiving the second DTX identification information and the first call type identification information that are not allowed to use the downlink DTX function; or

When the second DTX identification information and the second call type identification information are received, the first sending unit is started.

17. A code converter, comprising: a receiving unit, a determining unit, a first control unit, and a second control unit;

The receiving unit is configured to receive the identifier information that is sent by the base station BTS, where the identifier information includes: whether to allow downlink DTX identifier information of the downlink DTX function, call type identifier information indicating the calling or called call, and indicating The response identifier information of whether the response is acknowledged; the first DTX identification information indicating that the downlink discontinuous transmission DTX function is allowed to be used, the first call type identification information indicating the calling call, and the first response identifier indicating that the called party is not answered. Initiating the determining unit when the information is;

The code converter according to claim 17, wherein the receiving unit is further configured to:

When the first DTX identification information, the first call type identification information, and the second response identification information indicating that the called party has responded are received, the second control unit is activated; or

When the first DTX identification information and the second call type identification information indicating the called call are received, the second control unit is activated; or The first control unit is activated when receiving the second DTX identification information and the first call type identification information that are not allowed to use the downlink DTX function; or

When the second DTX identification information and the second call type identification information are received, starting the first control unit;

The first control unit is further configured to control the downlink DTX state of the called side to be in an off state, and the second control unit is further configured to control the downlink DTX state of the called side to be an open state.

19. A code converter, comprising: a receiving unit, a first control unit, and a second control unit;

The receiving unit is configured to receive the shutdown indication information sent by the base station BTS, start the first control unit, and receive the opening indication information sent by the BTS, and start the second control unit; the first control unit, The second control unit is configured to control the downlink DTX state of the calling side or the called side to be in an open state.

20. A wireless communication system, comprising: a mobile switching center MSC, a base station controller BSC:, a base station BTS, and a pattern converter TC;

The TC, when receiving the first DTX identification information that allows the downlink DTX function to be used, the first call type identification information indicating the calling call, and the first response identification information indicating that the called party does not answer, controlling the calling side The downlink DTX state is the off state; and when the uplink TRAU frame sent by the BTS is detected to indicate that the called party has answered, the downlink DTX state of the calling side is controlled to be in an open state.

The system according to claim 20, wherein the TC is further configured to: when receiving the first DTX identification information, the first call type identification information, and the second indicating that the called party has answered When the identification information is acknowledged; controlling the DTX state of the called side to be on; or When the first DTX identification information and the second call type identification information indicating the called call are received, the downlink DTX state of the called side is controlled to be in an open state; or

When receiving the second DTX identification information that is not allowed to use the downlink DTX function and the first call type identification information, controlling the downlink DTX state of the calling side to be in a closed state; or

When the second DTX identification information and the second call type identification information are received, the downlink DTX state of the called side is controlled to be in a closed state.

22. A wireless communication system, comprising: a mobile switching center MSC, a base station controller BSC, a base station BTS, and a pattern converter TC;

The system according to claim 22, wherein the BTS is further configured to: receive the first DTX identification information, the first call type identification information, and a second indicating that the called party has answered Sending the opening indication information to the TC when responding to the identifier information;

Receiving the first DTX identification information and the second call type identification information indicating the called call, sending the opening indication information to the TC; or

Receiving, when the second DTX identification information of the downlink DTX function is not allowed, and the first call type identification information, sending the shutdown indication information to the TC; or

Receiving the second DTX identification information and the second call type identification information, The TC sends a shutdown indication message;

The TC is also used to control the downlink DTX state of the called side to be in the off state, or to control the called side downlink DTX state to be in the on state.