CN105553785A - IDLE frame filtering method and device - Google Patents
IDLE frame filtering method and device Download PDFInfo
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- CN105553785A CN105553785A CN201610057369.5A CN201610057369A CN105553785A CN 105553785 A CN105553785 A CN 105553785A CN 201610057369 A CN201610057369 A CN 201610057369A CN 105553785 A CN105553785 A CN 105553785A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/16—Threshold monitoring
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
Abstract
The embodiment of the invention provides an IDLE frame filtering method and an IDLE frame filtering device, relates to the technical field of communication, and can filter abnormal IDLE frames and improve the accuracy of recognizing the serial numbers of IDLE frames. The filtering method comprises the steps of receiving a first IDLE frame; computing the serial number L_SEQ of the first IDLE frame; judging that whether the L_SEQ is more than or equal to a preset jitter threshold of the serial number L_V(R) of the next data frame expected to be received; and if the L_SEQ is more than or equal to the jitter threshold of the L_V(R), filtering the first IDLE frame.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of filter method and device of IDLE frame.
Background technology
Usually, idle (English: IDLE) process of frame is in radio link protocol (English: RadioLinkProtocol, abbreviation: RLP) module realizes.RLP module is between physical layer and transport layer, realize unconfirmed (English: NegativeAcknowledgement to what need retransmit, abbreviation: the NAK) error detection of frame, and retransmission mechanism, to complete data, transmission is (English: BestEffortDelivery) as possible.
Concrete, after the RLP module of receiving terminal receives IDLE frame, calculate the sequence number of this IDLE frame, L_SEQ can be expressed as (English: The12-bitsequencenumberofthereceivedframe, Chinese: the sequence number of the frame received), if L_SEQ is greater than this RLP module expect that the sequence number of the next Frame received is (English: The12-bitsequencenumberofthenextexpectednewdataframe, abbreviation: L_V (R)), this RLP then can generate a NAK list, and NAK list is sent to transmitting terminal, by transmitting terminal, the Frame indicated in this NAK list is retransmitted.
But L_SEQ is made up of least-significant byte and high 4, if IDLE frame occurs abnormal in transmitting procedure, i.e. at least one position in high 4 of L_SEQ is 1 by 0 saltus step suddenly, cause this L_SEQ to produce shake that increment is at least 256.Therefore, when the RLP module of receiving terminal finds that L_SEQ is greater than L_V (R), it is because IDLE frame is abnormal IDLE frame that this RLP module can not determine that L_SEQ is greater than L_V (R), or causes because a large amount of packet loss occurs Frame in transmitting procedure.If the IDLE frame that receiving terminal receives is abnormal IDLE frame, because the RLP module of receiving terminal can not accurately identify, therefore, the NAK frame list of the RLP CMOS macro cell mistake of receiving terminal can be caused, thus may reset operation be performed after causing the RLP module of transmitting terminal to receive the NAK frame list of this mistake, communication link is disconnected.
Summary of the invention
Embodiments of the invention provide a kind of filter method and device of IDLE frame, can the IDLE frame of Exception Filter, improve the accuracy of the sequence number of identification id LE frame.
For achieving the above object, embodiments of the invention adopt following technical scheme:
First aspect, the embodiment of the present invention provides a kind of filter method of IDLE frame, comprising:
Receive the first idle IDLE frame;
Calculate the sequence number L_SEQ of a described IDLE frame;
Judge whether described L_SEQ is greater than or equal to the shake thresholding of the sequence number L_V (R) of the next Frame that default expectation receives;
If described L_SEQ is greater than or equal to the shake thresholding of described L_V (R), then a described IDLE frame is filtered.
In the filter method of the IDLE frame that the embodiment of the present invention provides, by calculating the sequence number L_SEQ of the IDLE frame received, and when L_SEQ is greater than or equal to the shake thresholding of L_V (R), one IDLE frame is filtered, namely according to the shake thresholding of the L_V (R) preset, determine whether the IDLE frame received is abnormal IDLE frame, and after determining that an IDLE frame is abnormal IDLE frame, one IDLE frame is filtered, thus improves the accuracy of identification id LE frame number.
Optionally, the shake thresholding of described L_V (R) can adopt the first formulae discovery to obtain:
Described first formula is: (L_V (R)+JN) modulo4096,
Wherein, JN represents default shake numerical value, and 256≤JN≤4096, modulo represents modulo operation.
Optionally, described a described IDLE frame to be filtered, comprising:
Abandon a described IDLE frame.
By this optional scheme, when the RLP module of receiving terminal determines that L_SEQ is greater than or equal to the shake thresholding of L_V (R) again, directly an IDLE frame can be abandoned, thus avoid the NAK list of the RLP CMOS macro cell mistake of receiving terminal.
Optionally, described a described IDLE frame to be filtered, comprising:
Judge whether jitter filtering device is opened, and whether the value of counter is greater than or equal to 1, described counter exceedes the number of the IDLE frame of shake thresholding for recording L_SEQ;
If described jitter filtering device is closed, and the value of described counter is less than 1, then described jitter filtering device is opened, and the value of described counter is added 1, and abandon a described IDLE frame.
Optionally, described method also comprises:
If described jitter filtering device is opened, and the value of described counter is greater than or equal to 1, then determine whether the value of described counter is greater than or equal to N, N > 1, and N is integer;
If the value of described counter is less than N, then judge whether described L_SEQ is greater than or equal to the shake thresholding of described L_V (R);
If described L_SEQ is greater than or equal to the shake thresholding of described L_V (R), then the value of described counter is added 1, and abandon a described IDLE frame;
If described L_SEQ is less than the shake thresholding of described L_V (R), then close described jitter filtering device, and the value of described counter is reset.
Optionally, described method also comprises:
If the value of described counter is greater than or equal to N, then close described jitter filtering device, and the value of described counter is reset.
In embodiments of the present invention, numerical value of N is set, when the value of counter is greater than or equal to N, namely RLP module have received the IDLE frame that N number of L_SEQ is greater than the shake thresholding of L_V (R) continuously, now can think that an IDLE frame is normal (i.e. the L_SEQ shake thresholding that is greater than L_V (R) due to IDLE LOF cause), and then RLP module can perform in original flow process and generates NAK list and the step being sent to transmitting terminal, send the frame needing to retransmit to make transmitting terminal in time, thus avoid normal IDLE frame all to abandon.
Optionally, after the L_SEQ of the described IDLE frame of described calculating, before judging whether described L_SEQ is greater than or equal to the shake thresholding of L_V (R), described method also comprises:
Judge whether described jitter filtering device is opened;
If described jitter filtering device is opened, then perform the step that a described IDLE frame is filtered;
If described jitter filtering device is closed, then perform and judge whether described L_SEQ is greater than or equal to the step of the shake thresholding of L_V (R).
Optionally, described by described jitter filtering device unlatching, and the value of described counter is added after 1, described method also comprises:
If after a described IDLE frame, first frame received is control frame, Frame, or the IDLE frame that sequence number is equal with described L_V (R), then close described jitter filtering device, and the value of described counter is reset.
Optionally, described by described jitter filtering device unlatching, and the value of described counter is added after 1, described method also comprises:
If after a described IDLE frame, first the frame NAK frame received or FILL frame, then keep the opening of described jitter filtering device, and the value of described counter.
Second aspect, the embodiment of the present invention provides a kind of filter of IDLE frame, comprising:
Receiving element, for receiving the first idle IDLE frame;
Computing unit, for calculating the sequence number L_SEQ of the described IDLE frame that described receiving element receives;
Judging unit, for judging whether described L_SEQ that described computing unit calculates is greater than or equal to the shake thresholding of the sequence number L_V (R) of the next Frame that default expectation receives;
Filter element, if judge that described L_SEQ is greater than or equal to the shake thresholding of described L_V (R) for described judging unit, then filters the described IDLE frame that described receiving element receives.
Optionally, described computing unit, specifically for adopting the shake thresholding of L_V (R) described in the first formulae discovery:
Described first formula is: (L_V (R)+JN) modulo4096,
Wherein, JN represents default shake numerical value, and 256≤JN≤4096, modulo represents modulo operation.
Optionally, described filter element, specifically for abandoning a described IDLE frame.
Optionally, described filter element, specifically for judging whether jitter filtering device is opened, and whether the value of counter is greater than or equal to 1, if described jitter filtering device is closed, and the value of described counter is less than 1, then described jitter filtering device is opened, and the value of described counter is added 1, and abandon a described IDLE frame; Described counter exceedes the number of the IDLE frame of shake thresholding for recording L_SEQ.
Optionally, described filter element, if also open for described jitter filtering device, and the value of described counter is greater than or equal to 1, then determine whether the value of described counter is greater than or equal to N, if the value of described counter is less than N, then judge whether described L_SEQ is greater than or equal to the shake thresholding of described L_V (R); If described L_SEQ is greater than or equal to the shake thresholding of described L_V (R), then the value of described counter is added 1, and abandon a described IDLE frame; If described L_SEQ is less than the shake thresholding of described L_V (R), then close described jitter filtering device, and the value of described counter is reset, N > 1, and N is integer.
Optionally, described filter element, if be also greater than or equal to N for the value of described counter, then closes described jitter filtering device, and the value of described counter is reset.
Optionally, described judging unit, also for after the L_SEQ of the described IDLE frame of described computing unit calculating, before judging whether described L_SEQ is greater than or equal to the shake thresholding of L_V (R), judges whether described jitter filtering device is opened;
Described filter element, if also judge that described jitter filtering device is opened for described judging unit, then performs the step of filtering a described IDLE frame; And if described judging unit judges that described jitter filtering device is closed, then perform and judge whether described L_SEQ is greater than or equal to the step of the shake thresholding of L_V (R).
Optionally, described filter element, also for described jitter filtering device is being opened, and the value of described counter is added after 1, if after a described IDLE frame, first frame that described receiving element receives is control frame, Frame, or the IDLE frame that sequence number is equal with described L_V (R), then close described jitter filtering device, and the value of described counter is reset.
Optionally, described filter element, also for described jitter filtering device is being opened, and the value of described counter is added after 1, if after a described IDLE frame, first frame that described receiving element receives is NAK frame or FILL frame, then keep the opening of described jitter filtering device, and the value of described counter.
The technique effect of the filter of the IDLE frame that the embodiment of the present invention provides see the technique effect described in the filter method of IDLE frame described in above-mentioned first aspect, can repeat no more herein.
The third aspect, the embodiment of the present invention provides a kind of filter of IDLE frame, comprising: processor, memory, system bus and communication interface,
Described memory is for storing computer executed instructions, and when described filter runs, described processor performs the described computer executed instructions that described memory stores, with the filter method making described filter perform the IDLE frame described in above-mentioned first aspect.
The technique effect of the filter of the IDLE frame that the embodiment of the present invention provides see the technique effect described in the filter method of IDLE frame described in above-mentioned first aspect, can repeat no more herein.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, the accompanying drawing in the following describes is only some embodiments of the present invention.
The flow chart one of the filter method of a kind of IDLE frame that Fig. 1 provides for the embodiment of the present invention;
The flowchart 2 of the filter method of a kind of IDLE frame that Fig. 2 provides for the embodiment of the present invention;
The flow chart 3 of the filter method of a kind of IDLE frame that Fig. 3 provides for the embodiment of the present invention;
The structural representation of the filter of a kind of IDLE frame that Fig. 4 provides for the embodiment of the present invention;
The hardware schematic diagram of the filter of a kind of IDLE frame that Fig. 5 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.
Various technology described herein can be used for various wireless communication system, such as current 2G, 3G communication system and next generation communication system, such as global system for mobile communications (GSM, GlobalSystemforMobilecommunications), code division multiple access (CDMA, CodeDivisionMultipleAccess) system, time division multiple access (TDMA, TimeDivisionMultipleAccess) system, Wideband Code Division Multiple Access (WCDMA) (WCDMA, WidebandCodeDivisionMultipleAccessWireless), frequency division multiple access (FDMA, FrequencyDivisionMultipleAddressing) system, OFDM (OFDMA, OrthogonalFrequency-DivisionMultipleAccess) system, Single Carrier Frequency Division Multiple Access (SC-FDMA) system, GPRS (GPRS, GeneralPacketRadioService) system, Long Term Evolution (LTE, LongTermEvolution) system, and other these type of communication systems.
At present, the process of DLE frame realizes in RLP module.In a cdma system, RLP module is positioned on MAC layer, is between physical layer and transport layer, for user and control data provide segmentation and re-transmission business.And based on a set of error detection of NAK frame and retransmission mechanism, can ensure that grouped data is transmitted (English: BestEffortDelivery) as possible at link of eating dishes without rice or wine.
As shown in table 1, the form for IDLE frame:
Table 1
| Field | Length(bits) |
| SEQ | 8 |
| CTL | 4 |
| SEQ_HI | 4 |
| Padding | Variable |
Wherein, SEQ represents the least-significant byte of L_V (S), and CTL represents control bit, if be IDLE frame, then this territory is set to 1010, SEQ_HI to represent that L_V (S) comprises high 4, and Padding represents region filling.Wherein, L_V (S) is (English: sequence number The12-bitsequencenumberofthenextdataframetobesuppliedtot hemultiplexsub-layer) representing the Frame that the transmitting terminal next one will send.
After receiving terminal receives the IDLE frame that transmitting terminal sends at every turn, the RLP module of receiving terminal is first according to formula L_SEQ={SEQ+ [SEQ_HI*256] } calculate the sequence number L_SEQ of this IDLE frame.Further, when L_SEQ is greater than L_V (R), generate the list of NAK frame, and to upgrade L_V (R) be L_SEQ.
Owing to not being with FCS check word in current IDLE frame format, therefore, cannot ensure that whether the L_SEQ that the RLP module of receiving terminal calculates is correct.When L_SEQ is much larger than L_V (R), the RLP module of receiving terminal can not be determined owing to there occurs a large amount of packet loss and cause, or be 1 by 0 saltus step suddenly due at least one position in high 4 of this IDLE frame, create the shake that increment is at least 256 to cause to make L_SEQ, namely can not determine whether the IDLE frame received is abnormal IDLE frame.If what receiving terminal received is abnormal IDLE frame, the then RLP module of the receiving terminal NAK frame list of mistake that can generate be sent to transmitting terminal, if the RLP module of transmitting terminal is after the NAK frame list receiving this mistake, find to need the sequence number of the frame retransmitted to be greater than the sequence number L_V (S) of the frame data frame that the next one will send, the RLP of transmitting terminal then may trigger reset operation, thus communication link is disconnected.
For this reason, the embodiment of the present invention provides a kind of filter method and device of IDLE frame, can the IDLE frame of Exception Filter, improves the accuracy of identification id LE frame number.
The embodiment of the present invention provides a kind of filter method of IDLE frame, and as shown in Figure 1, the method comprises:
S101, RLP module receives an IDLE frame.
S102, RLP module calculates the sequence number L_SEQ of a described IDLE frame.
Wherein, L_SEQ represents the sequence number of the frame be currently received, and because an IDLE frame is the frame that RLP module is currently received, therefore, in embodiments of the present invention, the sequence number of an IDLE frame can represent with L_SEQ.
Concrete, formula L_SEQ={SEQ+ [SEQ_HI*256] can be adopted } calculate, wherein, SEQ represents the least-significant byte of the sequence number of IDLE, and SEQ_HI represents the high 4 of the sequence number of IDLE.
S103, RLP module judges whether this L_SEQ is greater than or equal to the shake thresholding of default L_V (R).
In embodiments of the present invention, shake numerical value (English: jitternumber, abbreviation: JN) can be pre-set.At present, in existing standard, if at least one position in high 4 of L_SEQ is 1 by 0 saltus step suddenly, then L_SEQ will produce the shake that increment is at least 256, therefore, can between 256 ~ 4096 by the value of JN, i.e. 256≤JN≤4096.
Concrete, the shake thresholding of described L_V (R) specifically can adopt the first formulae discovery to obtain:
Wherein, the first formula is: (L_V (R)+JN) modulo4096
Be understandable that, as L_SEQ >=(L_V (R)+JN) modulo4096, represent the jitter range of L_SEQ more than L_V (R); As L_SEQ < (L_V (R)+JN) modulo4096, represent that L_SEQ is not more than the jitter range of L_V (R).
If S104 L_SEQ is greater than or equal to the jitter range of L_V (R), RLP module then carries out jitter filtering process to an IDLE.
Concrete, in example of the present invention, the mode that the RLP module of receiving terminal is filtered an IDLE frame, can be directly an IDLE frame is abandoned, namely the RLP module of receiving terminal is after judging the jitter range of L_SEQ more than L_V (R), can determine that an IDLE frame is abnormal IDLE frame, need directly abandon, thus avoid because L_SEQ is greater than L_V (R), and make the NAK list of the RLP CMOS macro cell mistake of receiving terminal.
Optionally, composition graphs 1, as shown in Figure 2, above-mentioned S104 specifically can comprise:
S104a, RLP module judges whether jitter filtering device is opened, and whether the value of counter is greater than or equal to 1.
Wherein, counter is used for the number that LSN is greater than or equal to the IDLE frame of the shake thresholding of L_V (R).
If S104b jitter filtering device is closed, and the value of counter is less than 1, RLP module then by the unlatching of this jitter filtering device, and the value of counter is added 1, and abandons an IDLE frame.
In embodiments of the present invention, in an initial condition, jitter filtering device can be set to closed condition, when RLP module receives after sequence number is greater than or equal to an IDLE frame of the shake thresholding of L_V (R), this filtration jittering device can be opened, and an IDLE is abandoned, to avoid the NAK list of the RLP CMOS macro cell mistake of receiving terminal.
If this jitter filtering device of S104c is opened, and the value of counter is greater than or equal to 1, RLP module then determines whether the value of counter is greater than or equal to N, N > 1, and N is integer.
In embodiments of the present invention, if this jitter filtering device is opened, and the value of counter is greater than or equal to 1, then shows that RLP module is before reception the one IDLE frame, have received the shake thresholding IDLE frame that at least one sequence number is greater than or equal to L_V (R) continuously.
If the value of S104d counter is less than N, RLP module then judges whether this L_SEQ is greater than or equal to the shake shake thresholding of this L_V (R).
If this L_SEQ of S104e is greater than or equal to the shake thresholding of this L_V (R), the value of counter is then added 1 by RLP module, and abandons an IDLE frame.
In embodiments of the present invention, if RLP module is greater than or equal to the IDLE frame of the shake thresholding of L_V (R) receiving M (M < N) individual sequence number continuously, this M the IDLE frame that RLP module can be received abandons one by one, thus ensures the IDLE filtering frames of the exception received to fall.
If S104f L_SEQ is less than the shake thresholding of L_V (R), RLP module then closes described jitter filtering device, and the value of counter is reset.
Namely under the state of this jitter filtering device unlatching, if the IDLE frame that RLP module receives is normal IDLE frame, the filter opened then cuts out by RLP module, and the value of counter is reset, and continue to perform the size judging this L_SEQ and this L_V (R) in original flow process, to determine whether to generate NAK list, and upgrade the correlation step of L_V (R).In embodiments of the present invention, RLP module upper once receive sequence number be greater than or equal to the IDLE frame of the shake thresholding of L_V (R) time, can filter be reopened, and restart counting.
If the value of S104g counter is greater than or equal to N, RLP module then closes this jitter filtering device, and the value of counter is reset.
Optionally, in the embodiment of the present invention, after S104g, the method can also comprise:
S104h, RLP module judges the size of this L_SEQ and this L_V (R), to determine whether to generate NAK list.
If S104i RLP module is determined to generate NAK list, then RLP CMOS macro cell NAK list, and upgrades L_V (R), to make L_V (R) equal with L_SEQ.
In embodiments of the present invention, when the value of counter is greater than or equal to N, namely RLP module have received the IDLE frame that N number of sequence number is greater than or equal to the shake thresholding of L_V (R) continuously, now can determine that the shake thresholding that L_SEQ is greater than or equal to L_V (R) causes owing to occurring in frame transmitting procedure to lose, therefore, one IDLE frame is normal IDLE frame, and then RLP module needs L_V (R) to be updated to L_SEQ, and generate NAK list to send to transmitting terminal in time, the frame needing to retransmit is sent in time to make transmitting terminal.
Further, composition graphs 1, as shown in Figure 3, after above-mentioned S102, before S103, the method also comprises:
S105, RLP module judges whether this jitter filtering device is opened.
Concrete, if this jitter filtering device is opened, RLP module then performs the step of filtering an IDLE frame, and even this jitter filtering device is opened, and RLP module then performs the step in above-mentioned S104a-S104i by each different condition.
If jitter filtering device is closed, RLP module then performs and judges L_SEQ whether more than the step of the shake thresholding of L_V (R).Fig. 3 be only perform S102 after, perform S105, then perform S103 be that example carries out exemplary signal, concrete execution step/order can refer to the associated description to S105, repeats no more herein.
Further, it should be noted that, after above-mentioned S104b, if RLP module is after an IDLE frame, first frame received is control frame, Frame, or the IDLE frame that sequence number is equal with this L_V (R), then close this jitter filtering device, and the value of counter is reset.
Be understandable that, in embodiments of the present invention, if M+1 the frame that RLP module receives is control frame, Frame, or the IDLE frame that sequence number is equal with this L_V (R), then can determine that RLP module is before receiving this M+1 frame, the IDLE frame that M the sequence number received continuously is greater than or equal to the shake thresholding of L_V (R) is abnormal IDLE frame.
Further, it should be noted that, after above-mentioned S104b, if after a described IDLE frame, first the frame NAK frame received or FILL frame, then keep the opening of described jitter filtering device, and the value of described counter.
The embodiment of the present invention provides a kind of filter method of IDLE frame, by calculating the sequence number L_SEQ of the IDLE frame received, and when L_SEQ is greater than or equal to the shake thresholding of L_V (R), one IDLE frame is filtered, namely determine whether the IDLE frame be currently received is abnormal IDLE frame according to the shake thresholding of the L_V (R) preset, and when determining that an IDLE frame is abnormal IDLE frame, by the IDLE filtering frames of this exception, thus improve the accuracy of identification id LE frame number.
The embodiment of the present invention provides a kind of filter of IDLE frame, and the filter of described IDLE frame is for performing the step (filter of described IDLE frame can be the RLP module in terminal) performed by the RLP module in above method.The filter of described IDLE frame can comprise the module corresponding to corresponding steps.Exemplary, as shown in Figure 4, the filter of described IDLE frame can comprise:
Receiving element 10, for receiving the first idle IDLE frame; Computing unit 11, for calculating the sequence number L_SEQ of the described IDLE frame that described receiving element 10 receives; Judging unit 12, for judging whether described L_SEQ that described computing unit 11 calculates is greater than or equal to the shake thresholding of the sequence number L_V (R) of the next Frame that default expectation receives; Filter element 13, if judge that described L_SEQ is greater than or equal to the shake thresholding of described L_V (R) for described judging unit 12, then filters the described IDLE frame that described receiving element 10 receives.
Optionally, described computing unit 11, specifically for adopting the shake thresholding of L_V (R) described in the first formulae discovery:
Described first formula is: (L_V (R)+JN) modulo4096.
Wherein, JN represents default shake numerical value, and 256≤JN≤4096, modulo represents modulo operation.
Optionally, described filter element 13, specifically for abandoning a described IDLE frame.
Optionally, described filter element 13, specifically for judging whether jitter filtering device is opened, and whether the value of counter is greater than or equal to 1, if described jitter filtering device is closed, and the value of described counter is less than 1, then described jitter filtering device is opened, and the value of described counter is added 1, and abandon a described IDLE frame; Described counter exceedes the number of the IDLE frame of shake thresholding for recording L_SEQ.
Optionally, described filter element 13, if also open for described jitter filtering device, and the value of described counter is greater than or equal to 1, then determine whether the value of described counter is greater than or equal to N, if the value of described counter is less than N, then judge whether described L_SEQ is greater than or equal to the shake thresholding of described L_V (R); If described L_SEQ is greater than or equal to the shake thresholding of described L_V (R), then the value of described counter is added 1, and abandon a described IDLE frame; If described L_SEQ is less than the shake thresholding of described L_V (R), then close described jitter filtering device, and the value of described counter is reset, N > 1, and N is integer.
Optionally, described filter element 13, if be also greater than or equal to N for the value of described counter, then closes described jitter filtering device, and the value of described counter is reset.
Optionally, described judging unit 12, also for calculate a described IDLE frame at described computing unit 11 L_SEQ after, before judging whether described L_SEQ is greater than or equal to the shake thresholding of L_V (R), judge whether described jitter filtering device is opened.
Optionally, described filter element 13, if also judge that described jitter filtering device is opened for described judging unit 12, then performs the step of filtering a described IDLE frame; And if described judging unit 12 judges that described jitter filtering device is closed, then perform and judge whether described L_SEQ is greater than or equal to the step of the shake thresholding of L_V (R).
Optionally, described filter element 13, also for described jitter filtering device is being opened, and the value of described counter is added after 1, if after a described IDLE frame, first frame that described receiving element 10 receives is control frame, Frame, or the IDLE frame that sequence number is equal with described L_V (R), then close described jitter filtering device, and the value of described counter is reset.
Optionally, described filter element 13, also for described jitter filtering device is being opened, and the value of described counter is added after 1, if after a described IDLE frame, first frame that described receiving element 10 receives is NAK frame or FILL frame, then keep the opening of described jitter filtering device, and the value of described counter.
Be understandable that, the division of the modules of the filter of the IDLE frame of the present embodiment is only the logical partitioning that the function that realizes according to the filter of this IDLE frame is carried out, and in practical application, can carry out superposition or the fractionation of said units.And the function that the filter of the IDLE frame that this embodiment provides realizes and above-mentioned one of as any in Fig. 1 to Fig. 3 shown in embodiment in the filter method one_to_one corresponding of IDLE frame that provides, the handling process specifically that filter for this IDLE frame realizes, above-mentioned as one of any in Fig. 1 to Fig. 3 shown in embodiment of the method in be described in detail, be not described in detail herein.
The filter of the IDLE frame that the embodiment of the present invention provides, the sequence number L_SEQ of the IDLE frame received can be calculated, and when L_SEQ is greater than or equal to the shake thresholding of L_V (R), one IDLE frame is filtered, namely according to the shake thresholding of the L_V (R) preset, the filter of IDLE frame that the embodiment of the present invention provides can determine whether the IDLE frame be currently received is abnormal IDLE frame, and when determining that an IDLE frame is abnormal IDLE frame, by the IDLE filtering frames of this exception, thus improve the accuracy of identification id LE frame number.
As shown in Figure 5, the embodiment of the present invention provides a kind of filter of IDLE frame, the filter of this IDLE frame can be terminal, also can be base station, also can be a filtering module integrated in terminal or base station (such as can for RLP module integrated in terminal or base station), can also be a filtering module independent of terminal or base station, the present invention do concrete restriction.
The embodiment of the present invention can comprise with filter: processor 20, memory 21, system bus 22 and communication interface 23.
Described memory 21 is for storing computer executed instructions, described processor 20 is connected by described system bus 22 with described memory 21, when described filter runs, described processor 20 performs the described computer executed instructions that described memory 21 stores, with make described filter perform one of as any in Fig. 1 to Fig. 3 as described in the filter method of IDLE frame.The filter method of concrete IDLE frame can see above-mentioned one of as any in Fig. 1 to Fig. 3 shown in embodiment in associated description, repeat no more herein.
The present embodiment also provides a kind of storage medium, and this storage medium can comprise described memory 21.
Described processor 20 can be central processing unit (English: centralprocessingunit, abbreviation: CPU).Described processor 20 can also be other general processors, digital signal processor (English: digitalsignalprocessing, abbreviation: DSP), application-specific integrated circuit (ASIC) is (English: applicationspecificintegratedcircuit, abbreviation: ASIC), field programmable gate array (English: field-programmablegatearray, FPGA) or other programmable logic devices, discrete gate or transistor logic, discrete hardware components etc. abbreviation:.The processor etc. of general processor can be microprocessor or this processor also can be any routine.
Described memory 21 can comprise volatile memory, and (English: volatilememory), such as (English: random-accessmemory, abridges: RAM) random access memory; It is (English: non-volatilememory) that described memory 21 also can comprise nonvolatile memory, such as read-only memory is (English: read-onlymemory, abbreviation: ROM), flash memory is (English: flashmemory), hard disk is (English: harddiskdrive, abbreviation: HDD) or solid state hard disc (English: solid-statedrive, abbreviation: SSD); Described memory 21 can also comprise the combination of the memory of mentioned kind.
Described system bus 22 can comprise data/address bus, power bus, control bus and signal condition bus etc.In order to clearly demonstrate in the present embodiment, in Figure 5 various bus is all illustrated as system bus 22.
Described communication interface 23 can be specifically the transceiver in terminal.This transceiver can be wireless transceiver.Such as, wireless transceiver can be the antenna etc. of terminal.Described processor 20 by described communication interface 23 and other equipment, such as, carries out the transmitting-receiving of data between base station.
In specific implementation process, above-mentioned one of as any in Fig. 1 to Fig. 3 shown in method flow in each step all can be realized by the computer executed instructions of the software form stored in processor 20 execute store 21 of example, in hardware.For avoiding repetition, repeat no more herein.
It should be noted that, terminal described in the embodiment of the present invention, can be wireless terminal also can be catv terminal, wireless terminal can be point to the equipment that user provides voice and/or data connectivity, has the portable equipment of wireless connecting function or is connected to other treatment facilities of radio modem.Wireless terminal can through wireless access network (such as, RAN, RadioAccessNetwork) communicate with one or more core net, wireless terminal can be mobile terminal, as mobile phone (or being called " honeycomb " phone) and the computer with mobile terminal, such as, can be portable, pocket, hand-hold type, built-in computer or vehicle-mounted mobile device, they and wireless access network exchange language and/or data.Such as, Personal Communications Services is (English: PersonalCommunicationService, abbreviation: PCS) phone, cordless telephone, Session initiation Protocol (SIP) phone, wireless local loop (English: WirelessLocalLoop, abbreviation: WLL) stand, personal digital assistant (English: PersonalDigitalAssistant, PDA) abridge: the equipment such as.Wireless terminal also can be called system, subscri er unit is (English: SubscriberUnit), subscriber station is (English: SubscriberStation), mobile radio station is (English: MobileStation), travelling carriage is (English: Mobile), distant station is (English: RemoteStation), access point is (English: AccessPoint), remote terminal is (English: RemoteTerminal), access terminal (English: AccessTerminal), user terminal is (English: UserTerminal), user agent is (English: UserAgent), subscriber equipment is (English: UserDevice), or subscriber's installation is (English: UserEquipment).
Base station described in the embodiment of the present invention can be in Access Network aloft on interface by the equipment of one or more sector and wireless terminal communications.Base station can be used for the air frame received and IP to divide into groups mutually to change, and as the router between wireless terminal and the remainder of Access Network, wherein the remainder of Access Network can comprise Internet protocol (IP) network.Base station also tunable to the attribute management of air interface.Such as, base station can be that the base station in GSM or CDMA is (English: BaseTransceiverStation, abbreviation: BTS), also can be the base station (NodeB) in WCDMA, can also be evolved base station (NodeB or eNB or e-NodeB in LTE, evolutionalNodeB), the present invention does not limit.
Base station controller can also be comprised, can be specifically the base station controller (English: basestationcontroller in GSM or CDMA, abbreviation: BSC), also can be the radio network controller (English: RadioNetworkController in WCDMA, abbreviation: RNC), the present invention does not limit.
Those skilled in the art can be well understood to, for convenience and simplicity of description, only be illustrated with the division of above-mentioned each functional module, in practical application, can distribute as required and by above-mentioned functions and be completed by different functional modules, internal structure by device is divided into different functional modules, to complete all or part of function described above.The system of foregoing description, the specific works process of device and unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.
In several embodiments that the application provides, should be understood that, disclosed system, apparatus and method, can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described module or unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, the indirect coupling of device or unit or communication connection.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit can adopt the form of SFU software functional unit to realize.
If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) or processor perform all or part of step of method described in each embodiment of the present invention.Described storage medium be non-transience (English: non-transitory) medium, comprising: flash memory, portable hard drive, read-only memory, random access memory, magnetic disc or CD etc. various can be program code stored medium.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection range of claim.
Claims (18)
1. a filter method for IDLE frame, is characterized in that, comprising:
Receive the first idle IDLE frame;
Calculate the sequence number L_SEQ of a described IDLE frame;
Judge whether described L_SEQ is greater than or equal to the shake thresholding of the sequence number L_V (R) of the next Frame that default expectation receives;
If described L_SEQ is greater than or equal to the shake thresholding of described L_V (R), then a described IDLE frame is filtered.
2. method according to claim 1, is characterized in that,
The shake thresholding of described L_V (R) can adopt the first formulae discovery to obtain:
Described first formula is: (L_V (R)+JN) modulo4096,
Wherein, JN represents default shake numerical value, and 256≤JN≤4096, modulo represents modulo operation.
3. method according to claim 1, is characterized in that, describedly filters a described IDLE frame, comprising:
Abandon a described IDLE frame.
4. method according to claim 1, is characterized in that, describedly filters a described IDLE frame, comprising:
Judge whether jitter filtering device is opened, and whether the value of counter is greater than or equal to 1, described counter exceedes the number of the IDLE frame of shake thresholding for recording L_SEQ;
If described jitter filtering device is closed, and the value of described counter is less than 1, then described jitter filtering device is opened, and the value of described counter is added 1, and abandon a described IDLE frame.
5. method according to claim 4, is characterized in that, described method also comprises:
If described jitter filtering device is opened, and the value of described counter is greater than or equal to 1, then determine whether the value of described counter is greater than or equal to N, N > 1, and N is integer;
If the value of described counter is less than N, then judge whether described L_SEQ is greater than or equal to the shake thresholding of described L_V (R);
If described L_SEQ is greater than or equal to the shake thresholding of described L_V (R), then the value of described counter is added 1, and abandon a described IDLE frame;
If described L_SEQ is less than the shake thresholding of described L_V (R), then close described jitter filtering device, and the value of described counter is reset.
6. method according to claim 5, is characterized in that, described method also comprises:
If the value of described counter is greater than or equal to N, then close described jitter filtering device, and the value of described counter is reset.
7. the method according to any one of claim 4-6, is characterized in that, after the L_SEQ of the described IDLE frame of described calculating, before judging whether described L_SEQ is greater than or equal to the shake thresholding of L_V (R), described method also comprises:
Judge whether described jitter filtering device is opened;
If described jitter filtering device is opened, then perform the step that a described IDLE frame is filtered;
If described jitter filtering device is closed, then perform and judge whether described L_SEQ is greater than or equal to the step of the shake thresholding of L_V (R).
8. the method according to any one of claim 4-6, is characterized in that, described by described jitter filtering device unlatching, and adds after 1 by the value of described counter, and described method also comprises:
If after a described IDLE frame, first frame received is control frame, Frame, or the IDLE frame that sequence number is equal with described L_V (R), then close described jitter filtering device, and the value of described counter is reset.
9. the method according to any one of claim 4-6, is characterized in that, described by described jitter filtering device unlatching, and adds after 1 by the value of described counter, and described method also comprises:
If after a described IDLE frame, first frame received is NAK frame or FILL frame, then keep the opening of described jitter filtering device, and the value of described counter.
10. a filter for IDLE frame, is characterized in that, comprising:
Receiving element, for receiving the first idle IDLE frame;
Computing unit, for calculating the sequence number L_SEQ of the described IDLE frame that described receiving element receives;
Judging unit, for judging whether described L_SEQ that described computing unit calculates is greater than or equal to the shake thresholding of the sequence number L_V (R) of the next Frame that default expectation receives;
Filter element, if judge that described L_SEQ is greater than or equal to the shake thresholding of described L_V (R) for described judging unit, then filters the described IDLE frame that described receiving element receives.
11. filters according to claim 10, is characterized in that,
Described computing unit, specifically for adopting the shake thresholding of L_V (R) described in the first formulae discovery:
Described first formula is: (L_V (R)+JN) modulo4096,
Wherein, JN represents default shake numerical value, and 256≤JN≤4096, modulo represents modulo operation.
12. filters according to claim 10, is characterized in that,
Described filter element, specifically for abandoning a described IDLE frame.
13. filters according to claim 10, is characterized in that,
Described filter element, specifically for judging whether jitter filtering device is opened, and whether the value of counter is greater than or equal to 1, if described jitter filtering device is closed, and the value of described counter is less than 1, then described jitter filtering device is opened, and the value of described counter is added 1, and abandon a described IDLE frame; Described counter exceedes the number of the IDLE frame of shake thresholding for recording L_SEQ.
14. filters according to claim 13, is characterized in that,
Described filter element, if also open for described jitter filtering device, and the value of described counter is greater than or equal to 1, then determine whether the value of described counter is greater than or equal to N, if the value of described counter is less than N, then judge whether described L_SEQ is greater than or equal to the shake thresholding of described L_V (R); If described L_SEQ is greater than or equal to the shake thresholding of described L_V (R), then the value of described counter is added 1, and abandon a described IDLE frame; If described L_SEQ is less than the shake thresholding of described L_V (R), then close described jitter filtering device, and the value of described counter is reset, N > 1, and N is integer.
15. filters according to claim 14, is characterized in that,
Described filter element, if be also greater than or equal to N for the value of described counter, then closes described jitter filtering device, and the value of described counter is reset.
16. filters according to any one of claim 13-15, is characterized in that,
Described judging unit, also for after the L_SEQ of the described IDLE frame of described computing unit calculating, before judging whether described L_SEQ is greater than or equal to the shake thresholding of L_V (R), judges whether described jitter filtering device is opened;
Described filter element, if also judge that described jitter filtering device is opened for described judging unit, then performs the step of filtering a described IDLE frame; And if described judging unit judges that described jitter filtering device is closed, then perform and judge whether described L_SEQ is greater than or equal to the step of the shake thresholding of L_V (R).
17. filters according to any one of claim 13-15, is characterized in that,
Described filter element, also for described jitter filtering device is being opened, and the value of described counter is added after 1, if after a described IDLE frame, first frame that described receiving element receives is control frame, Frame, or the IDLE frame that sequence number is equal with described L_V (R), then close described jitter filtering device, and the value of described counter is reset.
18. filters according to any one of claim 13-15, is characterized in that,
Described filter element, also for described jitter filtering device is being opened, and the value of described counter is added after 1, if after a described IDLE frame, first frame that described receiving element receives is NAK frame or FILL frame, then keep the opening of described jitter filtering device, and the value of described counter.
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| CN201610057369.5A CN105553785A (en) | 2016-01-27 | 2016-01-27 | IDLE frame filtering method and device |
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| CN1628433A (en) * | 2002-02-07 | 2005-06-15 | 摩托罗拉公司 | Method and apparatus for a NACK-protocol |
| CN101488841A (en) * | 2009-02-18 | 2009-07-22 | 中兴通讯股份有限公司 | Frame retransmission method and apparatus for radio link protocol |
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| US20030103483A1 (en) * | 2001-07-31 | 2003-06-05 | Joshi Atul Suresh | Adaptive radio link protocol (RLP) to improve performance of TCP in wireless environment for cdmaone and cdma2000 systems |
| CN1628433A (en) * | 2002-02-07 | 2005-06-15 | 摩托罗拉公司 | Method and apparatus for a NACK-protocol |
| CN101488841A (en) * | 2009-02-18 | 2009-07-22 | 中兴通讯股份有限公司 | Frame retransmission method and apparatus for radio link protocol |
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