CN1798372A - Retransmission method of signaling message in use for communication in pressing and speaking mode - Google Patents
Retransmission method of signaling message in use for communication in pressing and speaking mode Download PDFInfo
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Abstract
The method includes following steps: a) the user terminal of Push-To-Talk (PTT) sends each signaling message in the message set to be transmitted to the PTT server; b) the user terminal receives the response message to the signaling message returned from PTT server, and acquires the current state of PTT user terminal; c) decides if the user terminal of PTT receives the response message to the signal message used in changing the current state of PTT user terminal into the next state; if yes, enters step d; if not, returns to step a; d) changes the current state of PTT user terminal into the state corresponding to the response message, and then performs relevant operation in term of the changed state.
Description
Technical field
The present invention relates to the signaling transmission technique field, relate in particular to a kind of retransmission method of signaling message that is applied in the push-to-talk communications.
Background technology
Current, along with the continuous development of the communication technology, User Datagram Protocol (UDP) is applied in the data transmission procedure more and more.In PoC (PTT) communication, just extensively adopted UDP to realize transfer of data.
By PTT communication, can between the cellphone subscriber, realize the conversation that similar intercom is the same therefore, being also referred to as " PTT ".In view of present GPRS (GPRS) network can not provide enough assurances to the network bandwidth, therefore, in PTT communication, for the service quality (QOS) that improves speech, adopt UDP to carry out transfer of data, and do not re-use transmission control protocol (TCP) as transport layer protocol.Yet UDP is a kind of towards wireless connections and the agreement of reliable transmission is not provided, and adopts this agreement to carry out transfer of data, and any one packet all may cause packet loss because of network congestion.When PTT communicates by letter, in the mutual packet of PTT client and ptt server, most important packet is exactly the signalling message data bag, for example, create PTT signaling, adding PTT signaling, request floor signaling, cancellation speech signaling etc., losing of these packets will directly have influence on normal PTT call flow, therefore, the method that need provide a kind of signaling message to retransmit is to guarantee the reliability of signalling message data bag transmission in the PTT communication process.
In the prior art, the method that provides a kind of simple signaling message to retransmit.In the method, the PTT client all continuously sends every signaling message repeatedly to ptt server, thereby the transmission by this continuous several times is avoided because the losing of the signalling message data bag that network congestion caused.Though this method can guarantee the reliability of signalling message data bag transmission,, have following shortcoming:
(1) the waste network bandwidth:
Adopt the method that prior art provided, the PTT client can repeat to send signaling message to ptt server according to predefined number of times, even ptt server has successfully been received the signaling message that the PTT client is sent, and return to the PTT client and to show and send receiveing the response successfully, the PTT client still can repeat the transmission of signaling message, until reaching predefined number of times; Thus, this simply repeats to send, and can cause the unnecessary waste of the network bandwidth between PTT client and the ptt server;
(2) cause the PTT client to carry out reprocessing:
In the method that prior art provided, the PTT client is retransmitted signaling message to ptt server, if ptt server is successfully received this signaling message, then return receiveing the response of this signaling message to the PTT client, after the PTT client receives that this receives the response, receive the response according to this PTT client present located state is changed into this pairing state and carry out corresponding operating according to the state after changing of receiveing the response; Because the PTT client is just retransmitted signaling message to ptt server simply, therefore, the PTT client can correspondingly be received corresponding the receiveing the response of signaling message a plurality of and repeating transmission, and receive the response according to this and repeatedly to carry out identical operations, this multi-pass operation is unnecessary repetitive operation obviously, and can be because this repetitive operation influences the handling property of PTT client.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of retransmission method of signaling message that is applied in the push-to-talk communications, this method can be avoided the waste of the network bandwidth, and can make the PTT client no longer carry out unnecessary repetitive operation, guarantees the handling property of PTT client.
For achieving the above object, the invention provides a kind of retransmission method of signaling message that is applied in the push-to-talk communications, this method comprises:
Step a: PoC (PTT) client sends each signaling message in the signaling message to be sent set to ptt server;
Step b:PTT client receives receiveing the response of the signaling message sent from ptt server, and obtains PTT client current state;
Step c: judge whether the PTT client receives the receiveing the response of signaling message that is used for PTT client current state is changed into NextState, if, execution in step d then, otherwise, step a returned;
Steps d: PTT client current state is changed into the described pairing state and carry out corresponding operating according to the state after changing of receiveing the response of step c, simultaneously, with this pairing signaling message deletion from signaling message set to be sent of receiveing the response, return step a, until the signaling message end of transmission.
Wherein, described signaling message set to be sent is preserved the pairing information node of each signaling message to be sent for message queue in this message queue;
Steps d is described with signaling message deletion from signaling message set to be sent to be:
The pairing information node of described signaling message is deleted from message queue.
Wherein, in step a, the every transmission of PTT client once after each signaling message, further comprises:
Whether the current transmission number of times of judging each signaling message that is sent has respectively reached the repeating transmission number of times that sets for this signaling message in advance, if, and then carry out described step b then with the deletion from signaling message set to be sent of this signaling message, otherwise, direct execution in step b.
Wherein, in step a, the every transmission of PTT client once after each signaling message, further comprises:
Whether the current transmitting time of judging each signaling message that is sent has respectively surpassed the transmission effective time that sets for this signaling message in advance, if, then with the deletion from signaling message set to be sent of this signaling message, and then carry out described step b, otherwise, direct execution in step b.
Wherein, in step a, the every transmission of PTT client once after each signaling message, further comprises:
Whether the current transmission number of times of judging each signaling message that is sent has respectively reached the repeating transmission number of times that sets for this signaling message in advance, if, and then carry out described step b then with the deletion from signaling message set to be sent of this signaling message, otherwise, direct execution in step b;
With, whether the current transmitting time of judging each signaling message that is sent has respectively surpassed the transmission effective time that sets for this signaling message in advance, if, then with the deletion from signaling message set to be sent of this signaling message, and then carry out described step b, otherwise, direct execution in step b.
Wherein, the described PTT of the judgement client of step c whether receive be used for PTT client current state change into NextState signaling message receive the response for:
According to the state relation of command name of receiveing the response described in the step b and PTT client, judge whether each comprises the receiveing the response of signaling message of current state being changed into NextState in receiveing the response.
Wherein, the state relation of described basis command name of receiveing the response and PTT client is carried out and is judged and comprise:
When PTT client current state is init state, the receiveing the response of AckCreatePTT by name or AckJoinPTT judges whether to receive orders, if can judge that then obtaining the PTT client has received the receiveing the response of signaling message that is used for current state is changed into NextState;
Steps d is described changes into the described pairing state and carry out corresponding operating according to the state after changing and comprise of receiveing the response of step c with PTT client current state:
According to receiveing the response of order AckCreatePTT by name or AckJoinPTT, PTT client current state is changed into the adding state, and execution and the corresponding operation of adding state.
Wherein, the state relation of described basis command name of receiveing the response and PTT client is carried out and is judged and comprise:
When PTT client current state is the adding state, the receiveing the response of AckSpeak by name or AckExitPTT judges whether to receive orders, if can judge that then obtaining the PTT client has received the receiveing the response of signaling message that is used for current state is changed into NextState;
Steps d is described changes into the described pairing state and carry out corresponding operating according to the state after changing and comprise of receiveing the response of step c with PTT client current state:
According to receiveing the response of order AckSpeak by name, PTT client current state is changed into floor status, perhaps be called receiveing the response of AckExitPTT according to order, PTT client current state is changed into the state of leaving.
Wherein, the state relation of described basis command name of receiveing the response and PTT client is carried out and is judged and comprise:
When PTT client current state is floor status, the receiveing the response of AckStopSpeak by name or AckExitPTT judges whether to receive orders, if can judge that then obtaining the PTT client has received the receiveing the response of signaling message that is used for current state is changed into NextState;
Steps d is described changes into the described pairing state and carry out corresponding operating according to the state after changing and comprise of receiveing the response of step c with PTT client current state:
According to receiveing the response of order AckStopSpeak by name, PTT client current state is changed into mute state, perhaps be called receiveing the response of AckExitPTT according to order, PTT client current state is changed into the state of leaving.
Wherein, the state relation of described basis command name of receiveing the response and PTT client is carried out and is judged and comprise:
When PTT client current state is mute state, the receiveing the response of AckSpeak by name or AckExitPTT judges whether to receive orders, if can judge that then obtaining the PTT client has received the receiveing the response of signaling message that is used for current state is changed into NextState;
Steps d is described changes into the described pairing state and carry out corresponding operating according to the state after changing and comprise of receiveing the response of step c with PTT client current state:
According to receiveing the response of order AckSpeak by name, PTT client current state is changed into floor status, perhaps be called receiveing the response of AckExitPTT according to order, PTT client current state is changed into the state of leaving.
Wherein, in the steps d, the described pairing signaling message deletion from signaling message set to be sent of will receiveing the response is:
Search in signaling message to be sent set according to described command name of receiveing the response and to obtain and this corresponding signaling message of receiveing the response, then with the deletion from signaling message set to be sent of this signaling message.
As seen, in the present invention, the PTT client is retransmitted signaling message to ptt server, after ptt server is successfully received this signaling message, return receiveing the response of this signaling message to the PTT client, after the PTT client receives that this receives the response, then stop and this repeating transmission of corresponding signaling message of receiveing the response, thereby avoid the waste of the network bandwidth; In the present invention, after the PTT client receives receiveing the response of signaling message, judge whether this is receiveed the response is the receiveing the response of NextState correspondence of the current state of living in of PTT client, if, then receive the response according to this, the current state of living in of PTT client is changed into this corresponding state of receiveing the response, otherwise, do not process, mode receives and receives the response and carry out respective handling according to this, can make the PTT client no longer carry out unnecessary repetitive operation, help guaranteeing the handling property of PTT client owing to receiving a plurality of receiveing the response.
Description of drawings
Fig. 1 is for realizing flow chart of the present invention.
Fig. 2 concerns schematic diagram for the PTT client state.
Embodiment
The present invention is a kind of retransmission method of signaling message that is applied in the push-to-talk communications, this method is in the retransmission process of signaling message, judge whether the PTT client receives pairing the receiveing the response of signaling message that is used for current state is changed into NextState, if not, then do not carry out corresponding operating, if, then receive the response the current state of PTT client is changed into and this corresponding state and carry out corresponding operating of receiveing the response according to this, the corresponding signaling message of simultaneously this being receiveed the response is deleted from signaling message set to be sent, thereby avoid retransmitting the network bandwidth waste that causes, and owing to the PTT client is repeatedly carried out the handling property decline problem that same operation causes owing to simple.
Describe the present invention below in conjunction with accompanying drawing.
Referring to Fig. 1, realize that the present invention needs following steps:
Step 101:PTT client sends each signaling message in the signaling message to be sent set to ptt server;
Step 102:PTT client receives receiveing the response of the signaling message sent from ptt server, and obtains PTT client current state;
Step 103: judge whether the PTT client receives the receiveing the response of signaling message that is used for current state is changed into NextState, if then execution in step 104, otherwise, return step 101;
Step 104: PTT client current state is changed into the described pairing state and carry out corresponding operating according to the state after changing of receiveing the response of step 103, simultaneously, with this pairing signaling message deletion from signaling message set to be sent of receiveing the response, return step 101, until the signaling message end of transmission.
Below in conjunction with instantiation, the specific implementation of above-mentioned steps is described in detail:
In following instantiation, for each signaling message makes up an information node, at least preserve this signaling message in this information node, each information node is kept in the message queue, form described signaling message set to be sent, for with signaling message this step of deletion from signaling message set to be sent, then can pass through the pairing information node of signaling message is deleted realization from message queue; In other embodiment of the present invention, also can adopt other form to form signaling message set to be sent, do not influence realization of the present invention.
(1) specific implementation of step 101:
Because each signaling message has repeating transmission number of times restriction separately respectively, therefore, in the embodiment of the invention, in the attribute of each signaling message, set in advance respectively and retransmit number of times and current transmission number of times, signaling message of the every transmission of PTT client, then upgrade the current transmission number of times of the signaling message that sends, judge whether this number of times reaches the repeating transmission number of times, if, then with the deletion from signaling message set to be sent of this signaling message, and then carry out described step 102, otherwise, direct execution in step 102;
If each signaling message has transmission restriction effective time separately respectively, then also need in the attribute of each signaling message, set in advance respectively and send effective time and current transmitting time, signaling message of the every transmission of PTT client, then upgrade the current transmitting time of the signaling message that sends, judge that whether this time surpassed predefined transmission effective time, if, then with the deletion from signaling message set to be sent of this signaling message, and then carry out described step 102, otherwise, direct execution in step 102;
In the present invention, can only consider to retransmit a kind of in the restriction of number of times and the restriction of effective time, performing step 101 also can all be considered two kinds of above restrictions, performing step 101; If do not consider this two kinds of restrictions, then can each signaling message in the signaling message set to be sent be sent to ptt server only according to conventional method, do not influence realization of the present invention;
(2) specific implementation of step 102:
The PTT client receives receiveing the response that ptt server returned, and writes down the command name that each is receiveed the response, and, obtain the current state of PTT client; Wherein, referring to Fig. 2, the state of PTT client comprises: init state, adding state, floor status, mute state and leave state, and the relation between each state is specially as shown in Figure 2:
Under init state, the PTT client can be changed into the adding state with init state by send CreatePTT order and JoinPTT order to ptt server;
Under the adding state, the PTT client can be changed into floor status with the adding state by send the Speak order to ptt server, and the PTT client can also be changed into the state of leaving with the adding state by send the ExitPTT order to ptt server;
Under floor status, the PTT client can be changed into the state of leaving with floor status by send the ExitPTT order to ptt server, and the PTT client can also be changed into mute state with floor status by send the StopSpeak order to ptt server;
Under mute state, the PTT client can be changed into floor status with mute state by send the Speak order to ptt server, and the PTT client can also be changed into the state of leaving with mute state by send the ExitPTT order to ptt server;
In other embodiment of the present invention, also can further expand the state kind of PTT client according to actual needs, do not influence realization of the present invention;
(3) specific implementation of step 103:
According to the state relation of each command name of receiveing the response that is write down in the step 102 and PTT client, judge whether each comprises in receiveing the response to change into the receiveing the response of signaling message of NextState with being used for PTT client current state, specifically comprise:
When PTT client current state is init state, the receiveing the response of AckCreatePTT by name or AckJoinPTT judges whether to receive orders, if can judge that then obtaining the PTT client has received the receiveing the response of signaling message that is used for current state is changed into NextState;
When PTT client current state is the adding state, the receiveing the response of AckSpeak by name or AckExitPTT judges whether to receive orders, if can judge that then obtaining the PTT client has received the receiveing the response of signaling message that is used for current state is changed into NextState;
When PTT client current state is floor status, the receiveing the response of AckStopSpeak by name or AckExitPTT judges whether to receive orders, if can judge that then obtaining the PTT client has received the receiveing the response of signaling message that is used for current state is changed into NextState;
When PTT client current state is mute state, the receiveing the response of AckSpeak by name or AckExitPTT judges whether to receive orders, if can judge that then obtaining the PTT client has received the receiveing the response of signaling message that is used for current state is changed into NextState;
In other embodiment of the present invention, if the PTT client comprises more state, then can be according to current state, and the command name of current state being changed into the signaling message of NextState, judge that whether the PTT client receives the receiveing the response of signaling message that is used for current state is changed into NextState, does not influence realization of the present invention;
(4) specific implementation of step 104:
According to the command name of receiveing the response that in step 102, is write down, in signaling message set to be sent, search and obtain and this corresponding signaling message of receiveing the response, then, with the deletion from signaling message set to be sent of this signaling message, and, as shown in Figure 2, according to the state relation of PTT client, current state is changed into and receiveed the response corresponding state specifically comprises:
When current state is init state,, PTT client current state is changed into the adding state according to receiveing the response of order AckCreatePTT by name or AckJoinPTT;
When current state is the adding state, according to receiveing the response of order AckSpeak by name, PTT client current state is changed into floor status, perhaps be called receiveing the response of AckExitPTT, PTT client current state is changed into the state of leaving according to order;
When current state is floor status, according to receiveing the response of order AckStopSpeak by name, PTT client current state is changed into mute state, perhaps be called receiveing the response of AckExitPTT, PTT client current state is changed into the state of leaving according to order;
When current state is mute state, according to receiveing the response of order AckSpeak by name, PTT client current state is changed into floor status, perhaps be called receiveing the response of AckExitPTT, PTT client current state is changed into the state of leaving according to order;
In other embodiment of the present invention, if the PTT client comprises more state, then can be further according to the relation between each state, and the order between each state, the current state of PTT client is changed into and receiveed the response corresponding state does not influence realization of the present invention;
After carrying out the state change, the PTT client is carried out corresponding operating according to the state after changing, and for example, when the state after the change is floor status, then can carry out the such operation of startup sound pick-up outfit, when changing into all the other states, also should carry out corresponding operating.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1, a kind of retransmission method of signaling message that is applied in the push-to-talk communications is characterized in that, this method comprises:
Step a: PoC (PTT) client sends each signaling message in the signaling message to be sent set to ptt server;
Step b:PTT client receives receiveing the response of the signaling message sent from ptt server, and obtains PTT client current state;
Step c: judge whether the PTT client receives the receiveing the response of signaling message that is used for PTT client current state is changed into NextState, if, execution in step d then, otherwise, step a returned;
Steps d: PTT client current state is changed into the described pairing state and carry out corresponding operating according to the state after changing of receiveing the response of step c, simultaneously, with this pairing signaling message deletion from signaling message set to be sent of receiveing the response, return step a, until the signaling message end of transmission.
2, method according to claim 1 is characterized in that, described signaling message set to be sent is preserved the pairing information node of each signaling message to be sent for message queue in this message queue;
Steps d is described with signaling message deletion from signaling message set to be sent to be:
The pairing information node of described signaling message is deleted from message queue.
3, method according to claim 1 is characterized in that, in step a, the every transmission of PTT client once after each signaling message, further comprises:
Whether the current transmission number of times of judging each signaling message that is sent has respectively reached the repeating transmission number of times that sets for this signaling message in advance, if, and then carry out described step b then with the deletion from signaling message set to be sent of this signaling message, otherwise, direct execution in step b.
4, method according to claim 1 is characterized in that, in step a, the every transmission of PTT client once after each signaling message, further comprises:
Whether the current transmitting time of judging each signaling message that is sent has respectively surpassed the transmission effective time that sets for this signaling message in advance, if, then with the deletion from signaling message set to be sent of this signaling message, and then carry out described step b, otherwise, direct execution in step b.
5, method according to claim 1 is characterized in that, in step a, the every transmission of PTT client once after each signaling message, further comprises:
Whether the current transmission number of times of judging each signaling message that is sent has respectively reached the repeating transmission number of times that sets for this signaling message in advance, if, and then carry out described step b then with the deletion from signaling message set to be sent of this signaling message, otherwise, direct execution in step b;
With, whether the current transmitting time of judging each signaling message that is sent has respectively surpassed the transmission effective time that sets for this signaling message in advance, if, then with the deletion from signaling message set to be sent of this signaling message, and then carry out described step b, otherwise, direct execution in step b.
6, method according to claim 1 is characterized in that, the described PTT of the judgement client of step c whether receive be used for PTT client current state change into NextState signaling message receive the response for:
According to the state relation of command name of receiveing the response described in the step b and PTT client, judge whether each comprises the receiveing the response of signaling message of current state being changed into NextState in receiveing the response.
7, method according to claim 6 is characterized in that, the state relation of command name that described basis is receiveed the response and PTT client is carried out judgement and comprised:
When PTT client current state is init state, the receiveing the response of AckCreatePTT by name or AckJoinPTT judges whether to receive orders, if can judge that then obtaining the PTT client has received the receiveing the response of signaling message that is used for current state is changed into NextState;
Steps d is described changes into the described pairing state and carry out corresponding operating according to the state after changing and comprise of receiveing the response of step c with PTT client current state:
According to receiveing the response of order AckCreatePTT by name or AckJoinPTT, PTT client current state is changed into the adding state, and execution and the corresponding operation of adding state.
8, method according to claim 6 is characterized in that, the state relation of command name that described basis is receiveed the response and PTT client is carried out judgement and comprised:
When PTT client current state is the adding state, the receiveing the response of AckSpeak by name or AckExitPTT judges whether to receive orders, if can judge that then obtaining the PTT client has received the receiveing the response of signaling message that is used for current state is changed into NextState;
Steps d is described changes into the described pairing state and carry out corresponding operating according to the state after changing and comprise of receiveing the response of step c with PTT client current state:
According to receiveing the response of order AckSpeak by name, PTT client current state is changed into floor status, perhaps be called receiveing the response of AckExitPTT according to order, PTT client current state is changed into the state of leaving.
9, method according to claim 6 is characterized in that, the state relation of command name that described basis is receiveed the response and PTT client is carried out judgement and comprised:
When PTT client current state is floor status, the receiveing the response of AckStopSpeak by name or AckExitPTT judges whether to receive orders, if can judge that then obtaining the PTT client has received the receiveing the response of signaling message that is used for current state is changed into NextState;
Steps d is described changes into the described pairing state and carry out corresponding operating according to the state after changing and comprise of receiveing the response of step c with PTT client current state:
According to receiveing the response of order AckStopSpeak by name, PTT client current state is changed into mute state, perhaps be called receiveing the response of AckExitPTT according to order, PTT client current state is changed into the state of leaving.
10, method according to claim 6 is characterized in that, the state relation of command name that described basis is receiveed the response and PTT client is carried out judgement and comprised:
When PTT client current state is mute state, the receiveing the response of AckSpeak by name or AckExitPTT judges whether to receive orders, if can judge that then obtaining the PTT client has received the receiveing the response of signaling message that is used for current state is changed into NextState;
Steps d is described changes into the described pairing state and carry out corresponding operating according to the state after changing and comprise of receiveing the response of step c with PTT client current state:
According to receiveing the response of order AckSpeak by name, PTT client current state is changed into floor status, perhaps be called receiveing the response of AckExitPTT according to order, PTT client current state is changed into the state of leaving.
11, method according to claim 1 is characterized in that, in the steps d, the described pairing signaling message deletion from signaling message set to be sent of will receiveing the response is:
Search in signaling message to be sent set according to described command name of receiveing the response and to obtain and this corresponding signaling message of receiveing the response, then with the deletion from signaling message set to be sent of this signaling message.
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| CNB2004101016342A CN100399841C (en) | 2004-12-20 | 2004-12-20 | Retransmission method of signaling message in use for communication in pressing and speaking mode |
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| CNB2004101016342A CN100399841C (en) | 2004-12-20 | 2004-12-20 | Retransmission method of signaling message in use for communication in pressing and speaking mode |
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| CN104572017A (en) * | 2014-12-24 | 2015-04-29 | 百度在线网络技术（北京）有限公司 | Methods and devices for executing command and providing instruction |
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| US20030078064A1 (en) * | 2001-10-22 | 2003-04-24 | Chan Victor H. | System and method for queuing talk requests in wireless dispatch system |
| US20030153343A1 (en) * | 2002-02-14 | 2003-08-14 | Crockett Douglas M. | Communication device for initiating a group call in a group communication network |
| CN100334867C (en) * | 2002-11-20 | 2007-08-29 | 华为技术有限公司 | Method for assuring reliability of data package transmission in simple network management protocol |
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| CN104572017A (en) * | 2014-12-24 | 2015-04-29 | 百度在线网络技术（北京）有限公司 | Methods and devices for executing command and providing instruction |
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