CN102201889B - Processing method of notification configuration frame, transcoder and rate adaptation unit - Google Patents

Abstract

The invention discloses a method for processing a notification configuration frame, a code type converter and a rate adaptation unit. The method includes: TRAU sends a TFO preparation notification configuration frame to the BTS according to a predetermined number of times; TRAU determines that no reply frame from the BTS is received during the predetermined number of TFO preparation notification configuration frame sending; TRAU instructs its TFO to enter a waiting state. The invention improves the success rate of TFO establishment.

Description

Notify the processing method of the configuration frame and the code converter and rate adaptation unit

technical field

The present invention relates to the field of communication, in particular to a method for processing notification configuration frames and a code converter and rate adapter unit (Transcoder and Rate Adapter Unit, referred to as TRAU).

Background technique

In the traditional mobile communication system, calling between mobile stations (Mobile Station, referred to as MS) requires two cascading operations of voice codec on the entire transmission link, which will reduce the voice quality. In order to solve this problem, Tandem Free Operation (TFO for short) is proposed in the related art, which can reduce the tandem operation of speech codec once during the transmission process, thereby improving the speech quality.

In the Global system for Mobile Communication (GSM) system, when the adaptive multi-rate (Adaptive Multi-Rate, AMR) algorithm is used between MSs, if TFO needs to be established, TRAU and base station (Base Transceiver Station, referred to as BTS) interact through notification configuration frames.

Specifically, when the TFO is ready to be established, rate adjustment is performed first, and the TRAU sends a TFO_SOON notification configuration frame carrying a rate adjustment request to the BTS to notify the BTS to enter the TFO_Maybe state and perform rate adjustment. Then, after completing the rate adjustment, the BTS also replies the Rc_Ack configuration frame to the TRAU. Only after TRAU receives Rc_Ack, the TFO in TRAU will enter the next TFO state, that is, start sending TFO frames to the peer TRAU, and establish TFO.

The process of interaction between the TRAU and the BTS through notification configuration frames will be described in detail below.

First, the BTS sends the relevant configuration parameters of the AMR to the TRAU in real time, so as to activate the TFO in the TRAU for negotiation.

Then, the TRAU sends the TFO state information to the BTS, so as to keep the TFO state of the TRAU consistent with the TFO state of the BTS.

In addition, the exchange types of notification configuration frames between the TRAU and the BTS are shown in Table 1 below. The TFO status sent by TRAU to BTS includes three types: TFO_OFF (ie, TFO off notification configuration frame), TFO_SOON (ie, TFO ready notification configuration frame) and TFO_ON (ie, TFO on notification configuration frame). Among them, when BTS receives TFO_OFF notification configuration frame and TFO_ON notification configuration frame, it will reply immediately; when receiving TFO_SOON notification configuration frame, BTS first enters TFO_Maybe state, and then replies to TRAU after completing rate adjustment. It should be noted that the response of BTS to the TFO_SOON notification configuration frame is a key event for TFO. Only when this event is generated can TFO establishment continue. Therefore, TRAU has high expectations for this event.

Table 1 Schematic diagram of the notification configuration frame interaction type between TRAU and BTS

Notification configuration frame type May contain types existing location effect sender Receiving end Con_Req Handover notification, Handover_SOON, Handover_Complete uplink, downlink Parameter interaction, request reply BTS BTS or TRAU Dis_Req TFO notification, TFO_ON, TFO_OFF, TFO_SOON uplink, downlink Carry configuration parameters or TFO notification request reply TRAU BTS Con_Ack - downlink Reply to Con_Req BTS BTS or TRAU UL_Ack Reply to TFO notification Uplink TRAU frame Reply to Dis_Req BTS TRAU DL_Ack - Downlink TRAU frame Reply to Con_Req TRAU BTS

The above notification configuration frame will be described in detail below.

The notification configuration frame is generally divided into a request frame and a reply frame, and both the TRAU and the BTS must wait for a reply after sending the request frame, and reply after receiving the request frame. At the same time, if the sender does not receive a reply frame within a certain period of time after sending the request frame, it will resend the request frame. During a voice call, since the notification configuration frame is sent by frame stealing, and multiple retransmissions of the request frame will affect the quality of the voice call, therefore, it is stipulated in the protocol 28.062-810 that if the sending end resends the request frame three times If the reply frame is still not received, the TFO will enter the FAI state, which will cause the TFO to fail.

It should be noted that the time required for TRAU to resend the request frame three times is not long. For the notification configuration frame that requires immediate reply, this time can usually be used as the threshold for judging link interaction failure.

However, when the BTS needs to complete the rate adjustment before replying, the required adjustment time is longer than the time for the TRAU to resend the request frame three times. If the BTS completes the rate adjustment for a long time, resulting in TRAU retransmitting the request frame three times and still not receiving the reply frame, then the TFO will enter the FAI state, which will cause the TFO to fail, so that the TFO function cannot be effectively exerted.

In addition, TFO_OFF can indicate the notification that TFO is not established. At this time, TRAU is in a non-TFO state, and this message needs to be notified to the base station as soon as possible, so that both TRAU and BTS are synchronized to the non-TFO traditional processing state. If it cannot be sent, the TRAU has ended TFO, and the base station may still be in the state of TFO_Maybe or TFO_Yes, that is, the TFO states of the base station and TRAU are inconsistent.

Contents of the invention

The main purpose of the present invention is to provide a processing method for notification configuration frame and TRAU, so as to at least solve the above problems.

In order to achieve the above purpose, according to one aspect of the present invention, a method for processing a notification configuration frame is provided.

The processing method of notification configuration frame according to the present invention comprises: TRAU sends TFO preparation notification configuration frame to BTS according to predetermined number of times; TRAU determines that in sending the TFO preparation notification configuration frame process of predetermined number of times, does not receive reply frame from BTS; TRAU Instructs its TFO to enter a wait state.

Further, the above method for processing the notification configuration frame further includes: TRAU starts a timer when sending the TFO preparation notification configuration frame to the BTS for the first time; after the timer expires, TRAU instructs the TFO to enter a failure state.

Further, the processing method of the above notification configuration frame also includes: TRAU starts a timer when sending the TFO preparation notification configuration frame to the BTS for the first time; after the timer expires, TRAU indicates that TFO enters a failure state; TRAU directly sends TFO to BTS Close notification configuration frame.

Further, the duration of the timer exceeds a predetermined length of the product of the predetermined number of times and the sending interval of the notification configuration frame, wherein the sending interval of the notification configuration frame is determined according to the round-trip delay calculated by the link measurement.

In order to achieve the above purpose, according to one aspect of the present invention, a method for processing a notification configuration frame is also provided.

The processing method of the notification configuration frame according to the present invention includes: TRAU indicates that its TFO enters the failure state; TRAU directly sends the TFO closing notification configuration frame to the BTS.

Furthermore, before the TRAU indicates that its TFO enters the failure state, the above method further includes: the TRAU sends a TFO start notification configuration frame to the BTS; and the TRAU determines that no reply frame is received from the BTS within a predetermined time.

Further, before the TRAU indicates that its TFO enters the failure state, the above method also includes: TRAU sends a TFO preparation notification configuration frame to the BTS according to a predetermined number of times; TRAU determines that during the TFO preparation notification configuration frame sending a predetermined number of times, no reply frame.

In order to achieve the above object, according to another aspect of the present invention, a TRAU is provided.

TRAU according to the present invention includes: a first sending module, used to send a TFO preparation notification configuration frame to the BTS according to a predetermined number of times; a determination module, used to determine that during the TFO preparation notification configuration frame sending a predetermined number of times, no The reply frame; the first indication module is used to instruct its TFO to enter the waiting state.

Further, the above-mentioned TRAU also includes: a starting module, which is used to start a timer when sending a TFO preparation notification configuration frame to the BTS for the first time; a second indication module, which is used to indicate that its TFO enters a failure state after the timer expires; The second sending module is used to directly send the TFO shutdown notification configuration frame to the BTS.

In order to achieve the above purpose, according to another aspect of the present invention, a TRAU is also provided.

The TRAU according to the present invention includes: an indication module, which is used to indicate that its TFO enters a failure state; a sending module, which is used to directly send a TFO shutdown notification configuration frame to the BTS.

Further, the TRAU also includes: a first sending module, configured to send a TFO start notification configuration frame to the BTS; a first determining module, configured to determine that no reply frame is received from the BTS within a predetermined time.

Further, the TRAU also includes: a second sending module, which is used to send a TFO preparation notification configuration frame to the BTS according to a predetermined number of times; a second determination module, which is used to determine that in the process of sending a predetermined number of TFO preparation notification configuration frames, no to the reply frame from the BTS.

Through the present invention, the TRAU is used to send the TFO preparation notification configuration frame to the BTS according to the predetermined number of times, and in the process of sending the predetermined number of TFO preparation notification configuration frames, if no reply frame is received from the BTS, the TRAU indicates that its TFO enters the waiting state, Solved the problem that TRAU did not receive the reply frame from BTS, causing its TFO to enter the FAI state, thus improving the success rate of TFO establishment.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:

FIG. 1 is a first flowchart of a method for processing a notification configuration frame according to an embodiment of the present invention;

FIG. 2 is a second flowchart of a method for processing a notification configuration frame according to an embodiment of the present invention;

Fig. 3 is the schematic diagram of the processing flow of TRAU sending TFO status notification configuration frame according to a preferred embodiment of the present invention;

Fig. 4 is a schematic diagram of the processing flow of TRAU sending a TFO_ON notification configuration frame according to a preferred embodiment of the present invention;

Fig. 5 is a schematic diagram of the processing flow of TRAU sending a TFO_SOON notification configuration frame according to a preferred embodiment of the present invention;

Fig. 6 is a schematic diagram of the processing flow of TRAU sending a TFO_OFF notification configuration frame according to a preferred embodiment of the present invention;

FIG. 7 is a structural block diagram of a TRAU according to Embodiment 1 of the present invention;

Fig. 8 is a preferred structural block diagram of TRAU according to Embodiment 1 of the present invention;

FIG. 9 is a structural block diagram of a TRAU according to Embodiment 2 of the present invention;

Fig. 10 is a block diagram of a preferred structure of a TRAU according to Embodiment 2 of the present invention.

Detailed ways

Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

According to an embodiment of the present invention, a method for processing a notification configuration frame is provided. Fig. 1 is a flowchart of a method for processing a notification configuration frame according to an embodiment of the present invention, including the following steps S102 to S106.

In step S102, the TRAU sends a TFO preparation notification configuration frame to the BTS according to a predetermined number of times.

In step S104, the TRAU determines that no reply frame is received from the BTS during the process of sending the predetermined number of TFO preparation notification configuration frames.

In step S106, the TRAU instructs its TFO to enter a waiting state.

Through the above steps, when TRAU does not receive a reply frame from the BTS during the sending of TFO_SOON notification configuration frames for a predetermined number of times, because TRAU does not indicate that its TFO enters a failure state, but enters a waiting state, thereby solving the problem that the TRAU does not receive The reply frame from BTS causes its TFO to enter the FAI state, thus improving the success rate of TFO establishment.

Preferably, according to the processing method of the above-mentioned notification configuration frame, when TRAU sends the TFO preparation notification configuration frame to the BTS for the first time, a timer is started (for example, the timer can be 1 second); after the timer expires, TRAU indicates its TFO into a failed state. In this way, when the TFO_SOON notification configuration frame is sent, the limitation of failing to receive a response after retransmitting n times is canceled, and it is handed over to the timer set by the state machine mechanism itself to limit. When TRAU does not receive a reply after retransmitting n times, it enters a state of waiting for a reply without sending it. If it still does not receive a reply after the timer of the protocol state machine expires, it instructs its TFO to enter a failure state. Therefore, the TFO in the TRAU is prevented from waiting for a long time when no reply is received for a long time, thereby improving the success rate of TFO establishment.

In addition, after the TFO in the TRAU enters the failure state, no matter whether there is an unfinished configuration interaction before, a TFO shutdown notification configuration frame is sent to the BTS immediately. It is used to keep the state of the base station and TRAU consistent.

It should be noted that the difference from the protocol here is that TFO_OFF is required to be sent immediately. In the protocol, if there is an unfinished configuration interaction, a new configuration interaction process will not be initiated. For example, in the embodiment of the present invention, when the TFO_SOON configuration frame interaction fails and TRAU enters FAILURE, a TFO_OFF notification needs to be sent to the BTS. The first case is to initiate a new interaction when there is an unfinished interaction, which is not allowed in the protocol. However, TFO_OFF indicates a notification that TFO is not established. At this time, TRAU is in a non-TFO state, and this message should be notified to the base station as soon as possible. TFO_OFF is sent immediately, so that the notification of the end of TFO can be quickly transmitted to the BTS, so that both TRAU and BTS are synchronized to the BTS. Legacy processing state for non-TFO. If the TRAU cannot send TFO_OFF due to the influence of the previous configuration interaction state, it will cause TRAU to end TFO, and the base station may still be in the state of TFO_Maybe or TFO_Yes. The TFO status of the base station and TRAU is consistent, and abnormal events and behaviors can be avoided in many cases.

The duration of the timer exceeds the predetermined length of the product of the predetermined number of times and the sending interval of the notification configuration frame, wherein the sending interval of the notification configuration frame is determined according to the round-trip delay calculated by the link measurement.

It should be noted that, for the choice of the number of retransmissions n of the configuration frame, the value specified in the protocol is n=3, because the retransmission interval of the configuration frame is the round-trip delay calculated according to the link measurement. Generally speaking, the retransmission is 3 times It is enough. It can be determined according to the actual implementation of the environment. However, the value of n should not be too large, because the transmission of configuration frames may cause frame stealing, which will affect the voice. Therefore, it is recommended that the maximum value of n is not More than 5. To avoid loss of configuration frames caused by link bursts, n should be greater than 1.

In addition, the selection of the number n of retransmissions of the configuration frame may be different according to the type of the configuration frame to be sent. However, when sending the TFO_SOON notification, the value of n should be such that the value of the round-trip delay of n times the link is much smaller than the value of the timer T1.

According to an embodiment of the present invention, a method for processing a notification configuration frame is also provided. Fig. 2 is a flowchart of a method for processing a notification configuration frame according to an embodiment of the present invention, including the following steps S202 to S204.

Step S202, TRAU instructs its TFO to enter a failure state.

In step S204, the TRAU directly sends a TFO off notification configuration frame to the BTS.

After the TFO in the TRAU enters the failure state, the TRAU directly sends a TFO shutdown notification configuration frame to the BTS, regardless of whether there is an unfinished configuration interaction before, to ensure that the TFO status of the base station and the TRAU are consistent.

Preferably, before the TRAU indicates that its TFO enters the failure state, the above method further includes: TRAU sends a TFO start notification configuration frame to the BTS; TRAU determines that no reply frame is received from the BTS within a predetermined time.

Preferably, before the TRAU indicates that its TFO enters the failure state, the above method also includes: TRAU sends a TFO preparation notification configuration frame to the BTS according to a predetermined number of times; TRAU determines that during the TFO preparation notification configuration frame sending a predetermined number of times, no reply frame.

It should be noted that in the protocol, the description of configuration frame sending timeout and TFO entry failure is very general. If it is because TFO_ON interaction fails and TFO ends, the base station may be in the TFO_Maybe or TFO_Yes state at this time, and the TRAU side is responsible for the uplink and downlink TRAU frames. There are certain restrictions on rate adjustment, and TRAU may have started sending TFO frames at this time. After the TFO_ON interaction fails, TFO ends accordingly, and the TRAU side should terminate the above TFO processing, including stopping sending TFO frames, releasing the rate adjustment, and sending a TFO_OFF notification to the BTS. In this way, the peer end can quickly detect the abnormal end of the local TFO and terminate the TFO synchronously. At the end of TFO, canceling the restriction on rate adjustment allows the base station to freely adjust the rate according to the wireless quality, and the TFO_OFF notification makes the TFO status of the base station and TRAU consistent.

It should be noted that the difference from the protocol here is that TFO_OFF is required to be sent immediately. In the protocol, if there is an unfinished configuration interaction, a new configuration interaction process will not be initiated. For example, in the embodiment of the present invention, when the TFO_ON configuration frame interaction fails and TRAU enters FAILURE, a TFO_OFF notification needs to be sent to the BTS. The first case is to initiate a new interaction when there is an unfinished interaction, which is not allowed in the protocol. However, TFO_OFF indicates a notification that TFO is not established. At this time, TRAU is in a non-TFO state, and this message should be notified to the base station as soon as possible. TFO_OFF is sent immediately, so that the notification of the end of TFO can be quickly transmitted to the BTS, so that both TRAU and BTS are synchronized to the BTS. Legacy processing state for non-TFO. If the TRAU cannot send TFO_OFF due to the influence of the previous configuration interaction state, it will cause TRAU to end TFO, and the base station may still be in the state of TFO_Maybe or TFO_Yes. The TFO status of the base station and TRAU is consistent, and abnormal events and behaviors can be avoided in many cases.

The present invention also provides a preferred embodiment, which combines the technical solutions of the above-mentioned multiple preferred embodiments, and will be described in detail below with reference to FIG. 3 to FIG. 6 .

Set the retransmission time interval of the configuration frame as N_Out_1 frame, set the counter C1=N_Out_1, every time a downlink TRAU frame is processed, the counter is decremented by 1, and the counter is reset when C1=0. The counter C2 is set as the count of TRAU retransmission configuration frames, and the counter C2 is incremented by 1 each time a configuration frame is sent. N is the maximum limit on the number of sending configuration frames.

Fig. 3 is the synoptic diagram of the processing flow of TRAU sending TFO status notification configuration frame according to the preferred embodiment of the present invention, as shown in Fig. 3, when TRAU needs to send TFO status notification configuration frame to BTS, comprise following steps S302 to step S308 .

In step S302, the TRAU judges whether the notification configuration frame type to be sent is TFO_OFF. If yes, go to step S304, otherwise go to step S306.

In step S304, enter the sending processing flow of the TFO_OFF configuration frame. Send a TFO_OFF configuration frame downstream. At this time, judge the state of TFO, if it is FAILURE, then end the interaction; otherwise, start the counter C1 and set the counter C2=1.

It should be noted that the following steps S702 to S726 describe in detail the sending processing flow of the TFO_OFF notification configuration frame.

In step S306, the TRAU judges whether there is an unfinished notification configuration frame interaction. If so, wait for the current configuration interaction to complete and return, otherwise TRAU enters the sending processing flow of the TFO_SOON notification configuration frame or the sending processing flow of the TFO_ON notification configuration frame.

It should be noted that, in this preferred embodiment, before step S306 TRAU judges whether there is an unfinished notification configuration frame interaction, that is, step S302 TRAU is executed to judge whether the notification configuration frame type to be sent is TFO_OFF, and if the judgment result is yes Next, step S304 is executed to enter the sending processing flow of the TFO_OFF configuration frame. It can be guaranteed that after the TFO in the TRAU enters the failure state, regardless of whether there is an unfinished configuration interaction before, the TFO shutdown notification configuration frame is sent to the BTS immediately, so as to keep the status of the base station and the TIAU consistent.

In step S308, enter the sending processing flow of the TFO_SOON notification configuration frame.

It should be noted that the following steps S602 to S628 describe in detail the sending processing flow of the TFO_OFF notification configuration frame.

In step S310, enter the sending processing flow of the TFO_ON notification configuration frame.

It should be noted that the following steps S502 to S524 describe in detail the sending processing flow of the TFO_OFF notification configuration frame.

Fig. 4 is a flow chart of the processing of TRAU sending a TFO_ON notification configuration frame according to an embodiment of the present invention, including the following steps S402 to S424.

In step S402, the TRAU enters the process flow of sending the TFO_ON notification configuration frame.

Step S404, send the first TFO_ON notification configuration frame downlink, set counter C2=1, start counter C1 at the same time, enter step S406.

In step S406, the TRAU judges whether it has received a reply to the TFO notification configuration frame from the BTS before the counter C1 is reset. If yes, go to step S408, otherwise go to step S410.

In step S408, C1 is reset to stop counting, and C2 is cleared to 0, and this configuration interaction is completed.

Step S410, decrement C1 by 1 each time the downlink TRAU data is processed.

Step S412, judging whether C1 is equal to zero. If not equal to zero, return to step S406. If it is equal to zero, go to step S414.

Step S414, add 1 to the counter C2.

Step S416, judging whether C2 is less than or equal to N, if yes, go to step S418, otherwise go to step S420.

In step S418, TRAU resends the configuration frame once, resets C1, and returns to step S406.

Step S420, stop the counter C1, and clear the counter C2.

In step S422, the configuration interaction ends, and the TFO state machine enters FAILURE.

Step S424, updating the type of the TRAU sending notification configuration frame to TFO_OFF, and sending the TFO_OFF notification configuration frame.

It should be noted that, in this preferred embodiment, after the TFO state machine enters FAILURE in step S422, step S424 is executed to update the type of the TRAU sending notification configuration frame as TFO_OFF, and send the TFO_OFF notification configuration frame. It can be guaranteed that after the TFO in the TRAU enters the failure state, regardless of whether there is an unfinished configuration interaction before, the TFO shutdown notification configuration frame is sent to the BTS immediately, so as to keep the state of the base station and the TRAU consistent.

Fig. 5 is a flow chart of the processing of TRAU sending a TFO_SOON notification configuration frame according to an embodiment of the present invention, including the following steps S502 to S528.

In step S502, the TRAU enters the sending process flow of the TFO_SOON notification configuration frame.

Step S504, send the first TFO_SOON notification configuration frame downlink, set counter C2=1, start counter C1 at the same time, enter step S506.

In step S506, the TRAU judges whether it has received a reply to the TFO notification configuration frame from the BTS before the counter C1 is reset. If yes, go to step S508, otherwise go to step S510.

In step S508, C1 is reset to stop counting, and C2 is cleared to 0, and this configuration interaction is completed.

Step S510, decrement C1 by 1 each time the downlink TRAU data is processed.

Step S512, judging whether C1 is equal to zero. If not equal to zero, return to step S506. If it is equal to zero, go to step S514.

Step S514, add 1 to the counter C2.

Step S516, judging whether C2 is less than or equal to N, if yes, go to step S518, otherwise go to step S520.

In step S518, TRAU resends the configuration frame once, C1 is reset, and then returns to step S506.

Step S520, stop the counter C1, and clear the counter C2.

In step S522, TRAU waits for the TFO state machine to run by itself, and judges whether the state machine timer has timed out, and if not, proceeds to step S524, and if timed out, proceeds to step S526.

In step S524, the TRAU judges whether a reply from the BTS to the TFO notification configuration frame is received. If yes, the configuration interaction is completed, and then return to step S508, otherwise, enter step S522.

In step S526, the configuration interaction ends, and the TFO state machine enters FAILURE.

It should be noted that, when TRAU does not receive a reply frame from the BTS in the process of sending a predetermined number of TFO_SOON notification configuration frames, because TRAU does not instruct its TFO to enter step S526, the TFO state machine enters FAILURE, but enters step S522. TRAU waits The TFO state machine operates by itself, and judges whether the state machine timer is overtime (that is, the waiting state), thereby solving the problem that TRAU does not receive a reply frame from the BTS, causing its TFO to enter the FAI state, thereby improving the success of TFO establishment Rate.

Step S528, updating the type of the TRAU sending notification configuration frame to TFO_OFF, and sending the TFO_OFF notification configuration frame.

It should be noted that, in this preferred embodiment, after the TFO state machine enters FAILURE in step S526, step S528 is executed to update the type of the TRAU sending notification configuration frame as TFO_OFF, and send the TFO_OFF notification configuration frame. It can be guaranteed that after the TFO in the TRAU enters the failure state, regardless of whether there is an unfinished configuration interaction before, the TFO shutdown notification configuration frame is sent to the BTS immediately, so as to keep the state of the base station and the TRAU consistent.

Fig. 6 is a flowchart of the processing of TRAU sending a TFO_OFF notification configuration frame according to an embodiment of the present invention, including the following steps S602 to S626.

In step S602, the TRAU enters the process flow of sending the TFO_OFF notification configuration frame.

Step S604, sending the first TFO_OFF notification configuration frame downlink.

In step S606, the TRAU judges whether the TFO is in a failure (FAILURE) state. If yes, go to step S608, otherwise go to step S610.

Step S608, this configuration interaction is completed, and this interaction ends.

Step S610, start the counter C1, and set the counter C2 equal to 1.

In step S612, the TRAU judges whether it has received a reply to the TFO notification configuration frame from the BTS before the counter C1 is reset. If yes, return to step S608, otherwise enter step S614.

Step S614, decrement C1 by 1 each time the downlink TRAU data is processed.

Step S616, judging whether C1 is equal to zero. If not equal to zero, return to step S614. If it is equal to zero, go to step S618.

Step S618, add 1 to the counter C2.

Step S620, judging whether C2 is less than or equal to N, if yes, go to step S622, otherwise go to step S624.

In step S622, TRAU resends the configuration frame once, resets C1, and returns to step S614.

Step S624, stop the counter C1, and clear the counter C2.

In step S626, the configuration interaction ends, and the TFO state machine enters FAILURE.

It should be noted that, in this preferred embodiment, before step S626 TFO state machine enters FAILURE, no matter whether there is unfinished configuration interaction (such as the above-mentioned TFO_ON and TFO_SOON notification configuration frame interaction failure), immediately send TFO close notification configuration to BTS frame, so as to keep the state of the base station and TRAU consistent.

According to the embodiment of the present invention, a kind of processing method of notification configuration frame is provided. TRAU is used to send TFO preparation notification configuration frame to BTS according to predetermined times, and during the process of sending predetermined times of TFO preparation notification configuration frame, no The reply frame of the BTS, the TRAU instructs its TFO to enter the waiting state, which solves the problem that its TFO enters the FAI state because the TRAU does not receive the reply frame from the BTS, thereby improving the success rate of TFO establishment.

According to an embodiment of the present invention, a TRAU is also provided, and the TRAU can be used to implement the above method for processing a notification configuration frame. FIG. 7 is a structural block diagram of a TRAU according to Embodiment 1 of the present invention, including: a first sending module 71 , a determining module 72 and a first indicating module 73 . Its structure is described in detail below.

The first sending module 71 is used to send the TFO preparation notification configuration frame to the BTS according to a predetermined number of times; the determination module 72 is connected to the first sending module 71 and is used to determine the TFO preparation notification configuration frame sent by the first sending module 71 for a predetermined number of times During the process, no reply frame from the BTS is received; the first indication module 73 is connected to the determination module 72, and is used to instruct its TFO to enter the waiting state when the determination result of the determination module 72 is yes.

FIG. 8 is a preferred structural block diagram of the TRAU according to Embodiment 1 of the present invention, which further includes an activation module 74 , a second indication module 75 , and a second sending module 76 . Its structure is described in detail below.

The start module 74 is connected to the first sending module 72, and is used for the first sending module 72 to start the timer when the first sending module 72 sends the TFO preparation notification configuration frame to the BTS; the second indication module 75 is connected to the start module 74, and is used for After the timer started by the starting module 74 expires, it indicates that the TFO enters the failure state; the second sending module 76 is connected to the second indication module 75, and is used to indicate that the TFO enters the failure state at the second indication module 75, and directly sends the TFO to the BTS Close notification configuration frame.

Fig. 9 is a structural block diagram of a TRAU according to Embodiment 2 of the present invention, including: an indication module 91 and a sending module 92, and the structure thereof will be described in detail below.

The indication module 91 is used to indicate that its TFO enters the failure state; the sending module 92 is used to directly send a TFO shutdown notification configuration frame to the BTS.

After the TFO in the TRAU enters the failure state, the TRAU directly sends a TFO shutdown notification configuration frame to the BTS, regardless of whether there is an unfinished configuration interaction before, to ensure that the TFO status of the base station and the TRAU are consistent.

FIG. 10 is a preferred structural block diagram of a TRAU according to Embodiment 2 of the present invention, including: a first sending module 101 , a first determining module 102 , a second sending module 103 and a second determining module 104 . Its structure is described in detail below.

The first sending module 101 is used to send the TFO opening notification configuration frame to the BTS; the first determination module 102 is connected to the first sending module 101 and is used to determine the predetermined time within which the first sending module 101 sends the TFO opening notification configuration frame , no reply frame is received from the BTS.

The second sending module 103 is used to send the TFO preparation notification configuration frame to the BTS according to a predetermined number of times; the second determination module 104 is connected to the second sending module 103, and is used to determine whether the second sending module 103 sends the TFO preparation notification configuration frame During the predetermined number of TFO preparation notification configuration frames, no reply frame is received from the BTS.

In summary, according to the above-mentioned embodiments of the present invention, a processing method and TRAU for a notification configuration frame are provided. TRAU is used to send a TFO preparation notification configuration frame to the BTS according to a predetermined number of times, and the TFO preparation notification configuration frame is sent after sending a predetermined number of times. During the frame process, if no reply frame from BTS is received, the TRAU instructs its TFO to enter the waiting state, which solves the problem that its TFO enters the FAI state because TRAU does not receive a reply frame from the BTS, thereby improving the TFO establishment Success rate. In addition, the present invention can keep the TFO status of TRAU consistent with that of BTS when TFO fails due to configuration frame interaction abnormality.

Obviously, those skilled in the art should understand that each module or each step of the above-mentioned present invention can be realized by a general-purpose computing device, and they can be concentrated on a single computing device, or distributed in a network formed by multiple computing devices Alternatively, they may be implemented in program code executable by a computing device so that they may be stored in a storage device to be executed by a computing device, and in some cases in an order different from that shown here The steps shown or described are carried out, or they are separately fabricated into individual integrated circuit modules, or multiple modules or steps among them are fabricated into a single integrated circuit module for implementation. As such, the present invention is not limited to any specific combination of hardware and software.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (8)

1. a processing method for notification configuration frame, is characterized in that, comprising:

Pattern transducer and Rate Adapter Unit TRAU send tandem free cascade operation TFO according to pre-determined number to base station BTS and prepare notification configuration frame;

Described TRAU determines to prepare, in notification configuration frame process, not receive the reply frame from described BTS at the described TFO sending described pre-determined number;

Described TRAU indicates its TFO to enter wait state.

2. the processing method of notification configuration frame according to claim 1, is characterized in that, also comprises:

Described TRAU, when sending described TFO preparation notification configuration frame to BTS first, starts timer;

Described timer then after, described TRAU indicates described TFO to enter status of fail.

3. the processing method of notification configuration frame according to claim 1, is characterized in that, also comprises:

Described TRAU, when sending described TFO preparation notification configuration frame to BTS first, starts timer;

Described timer then after, described TRAU indicates described TFO to enter status of fail;

Described TRAU sends TFO directly to described BTS and closes notification configuration frame.

4. the processing method of the notification configuration frame according to Claims 2 or 3, it is characterized in that, the duration of described timer exceedes the long-pending predetermined length at the transmission interval of described pre-determined number and described notification configuration frame, wherein, the round-trip delay that the transmission interval of described notification configuration frame obtains according to link survey calculation is determined.

5. a processing method for notification configuration frame, is characterized in that, comprising:

TRAU indicates its TFO to enter status of fail, wherein, indicates before its TFO enters status of fail, also comprise: described TRAU sends TFO to described BTS and opens notification configuration frame at described TRAU; Described TRAU determines in the given time, does not receive the reply frame from described BTS; Or, indicate before its TFO enters status of fail at described TRAU, also comprise: TRAU sends TFO according to pre-determined number to BTS and prepares notification configuration frame; Described TRAU determines to prepare, in notification configuration frame process, not receive the reply frame from described BTS at the described TFO sending described pre-determined number;

No matter whether have the configuration interactive do not completed before, described TRAU sends TFO directly to BTS and closes notification configuration frame.

6. a processing unit for notification configuration frame, is characterized in that, is applied to TRAU, comprising:

First sending module, prepares notification configuration frame for sending TFO according to pre-determined number to BTS;

Determination module, prepares, in notification configuration frame process, not receive the reply frame from described BTS at the described TFO sending described pre-determined number for determining;

First indicating module, is used to indicate described TFO and enters wait state.

7. device according to claim 6, is characterized in that, also comprises:

Starting module, for when sending described TFO preparation notification configuration frame to BTS first, starting timer;

Second indicating module, for described timer then after, indicate described TFO to enter status of fail;

Second sending module, closes notification configuration frame for sending TFO directly to described BTS.

8. a processing unit for notification configuration frame, is characterized in that, is applied to TRAU, comprising:

First sending module and the first determination module, wherein, described first sending module, opens notification configuration frame for sending TFO to described BTS; Described first determination module, for determining in the given time, does not receive the reply frame from described BTS;

Or, the second sending module and the second determination module, wherein, described second sending module, prepares notification configuration frame for sending TFO according to pre-determined number to BTS; Second determination module, prepares, in notification configuration frame process, not receive the reply frame from described BTS at the described TFO sending described pre-determined number for determining;

Indicating module, is used to indicate described TFO and enters status of fail;

Sending module, for no matter whether having the configuration interactive do not completed before, sending TFO directly to BTS and closing notification configuration frame.