CN103428752A

CN103428752A - Wireless link quality monitoring method and device and wireless transmitting-receiving unit

Info

Publication number: CN103428752A
Application number: CN2012101631276A
Authority: CN
Inventors: 罗丽云; 董霄剑; 梁璟
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2012-05-22
Filing date: 2012-05-22
Publication date: 2013-12-04
Anticipated expiration: 2032-05-22
Also published as: CN103428752B

Abstract

The embodiment of the invention discloses a wireless link quality monitoring method and device and a wireless transmitting-receiving unit. The method comprises the steps of receiving a wireless frame signal through a downlink wireless link, obtaining the period according to the presetting, and obtaining the signal to noise ratio of a pilot signal in the wireless frame signal and/or the block error rate of a service channel; according to the obtained signal to noise ratio and/or the block error rate of the service channel, combining the block error rate of a physical downlink control channel, and judging whether the downlink wireless link is synchronous or is out of synchronization. According to the embodiment of the method, the accuracy and reliability of wireless link quality monitoring can be improved.

Description

Radio link quality monitoring method and device, wireless transmission receiving element

Technical field

The present invention relates to the communication technology, especially a kind of radio link quality monitoring method and device, wireless transmission receiving element.

Background technology

Long Term Evolution (Long Term Evolution, hereinafter to be referred as: LTE) communication system is that (The 3rd Generation Telecommunication, hereinafter to be referred as evolution 3G) for 3-G (Generation Three mobile communication system).Different from the circuit switched mode that cellular system adopted in the past, the LTE communication system is only supported packet switching service, higher service transmission rate can be provided, the uplink and downlink peak data rate provided in the 20MHz bandwidth is respectively 100Mbit/s and 50Mbit/s, for the user provides abundanter service.

The LTE communication system can under a unified framework, adopt simultaneously Frequency Division Duplexing (FDD) (Frequency Division Duplex, hereinafter to be referred as: FDD) and time division duplex (Time Division Duplex, hereinafter to be referred as TDD) pattern.Wherein, adopt the LTE communication system of tdd mode also referred to as the TD-LTE system.Fig. 1 is a wireless frame structure schematic diagram in the TD-LTE system under the 5ms switching cycle.As shown in Figure 1, each wireless frame length is T _f=307200T _s=10ms, by two long be 153600T _sThe field of=5ms forms.Each field by five long be 30720T _sThe subframe of=1ms forms, and wherein each subframe is containing two time slots (Slot).Wherein, T _sFor basic time unit (Basic time unit), T _s=1/ (15000 * 2048) s.As shown in table 1 below, the uplink and downlink link of supporting for wireless frame structure in the TD-LTE system (Uplink, Downlink, hereinafter to be referred as: UL/DL) allocation list.

The UL/DL allocation list that in table 1TD-LTE system, frame structure is supported

Referring to above-mentioned table 1; for each subframe in a radio frames; " D " means to be exclusively used in the subframe of downlink transfer; " U " means to be exclusively used in the subframe of uplink, and " S " means the special subframe for down link pilot timeslot (DwPTS), protection time slot (GP) and these three territories of uplink pilot time slot (UpPTS).Referring to Fig. 1, the total length of DwPTS, GP and UpPTS is 30720T _s=1ms.Each subframe i means by 2 time slot 2i and 2i+1, and each time slot is long is T _Slot=15360T _s=0.5ms.The LTE communication system is supported the up-downgoing switching cycle of 5ms and 10ms under tdd mode.If the downstream-to-upstream transfer point cycle is 5ms, special subframe can be present in two fields; If downstream-to-upstream transfer point cycle 10ms, special subframe only is present in first field.Subframe 0 and subframe 5 and DwPTS are always for downlink transfer.UpPTS and the subframe of closelying follow after special subframe are exclusively used in uplink.

Universal mobile telecommunications system in early days (Universal Mobile Telecom System, hereinafter to be referred as: UMTS), by fast closed-loop power, control the substantially constant circuit-switched service of supported data speed.And in the LTE communication system, high-speed packet access (Hight Speed Packet Access, hereinafter to be referred as: HSPA) and the link circuit self-adapting adjustment information data rate dynamically in LTE, with according to wireless channel to each user's match channels capacity, be called as link circuit self-adapting and (Adaptive Modulation Coding, hereinafter to be referred as AMC) technology based on Adaptive Modulation and Coding.But under special circumstances, for example,, when wireless communications environment is severe, still there is the very poor situation of communication quality.Therefore, for the subscriber equipment of setting up business on wireless link (User Equipment, hereinafter to be referred as: UE), will be always monitoring quality of down wireless link, during lower than certain standard, be called radio link failure when radio link quality, now, UE will stop the ascending power emission, to reduce the interference to other user in communication system, reduce power consumption simultaneously.After descending radio link quality improves, if higher than certain standard, be called wireless link synchronization, now, UE will restart the ascending power emission.

According to third generation partner program (the 3rd Generation Partnership Project, hereinafter to be referred as: the 3GPP) regulation of standard 36.133, the UE monitoring quality of down wireless link, received signal quality estimated channel quality based on pilot signal, and compare with the step-out threshold value (Qout) set in advance/synchronous gate limit value (Qin), thereby judge wireless link synchronization or step-out.Wherein, Qout is the step-out threshold value, and when descending radio link quality does not reach Qout, UE can not receive the down wireless link signal reliably.Qin is synchronization threshold, and when descending radio link quality reaches Qin, with respect to Qout, UE can receive the down wireless link signal reliably.

In communication process, for assistant base station (also referred to as enode b or eNodeB, hereinafter to be referred as: the modulation that eNB) choice for use is suitable and coding (Modulation and Coding Scheme, hereinafter to be referred as: MCS) mode, reference signal (the Reference Signal that UE need to receive from the down link of LTE communication system, hereinafter to be referred as: (Channel Quality Indicator, hereinafter to be referred as CQI) information report eNB RS) to obtain the channel quality indication in the quality.UE specifically based on a set of Block Error Rate (Block Error Ratio, hereinafter to be referred as: BLER) threshold value is selected suitable CQI value, and this BLER threshold value is BLER<=10%.But the BLER to Physical Downlink Control Channel (PDCCH) is very low, general<10%.Therefore, we can qualitatively think, the wireless environment that Qout is corresponding is very severe, that is: UE just can close transmitter in the situation that wireless environment is very poor.

In realizing process of the present invention, the inventor finds, at least has following problem during the prior art monitoring quality of down wireless link:

In prior art, according to the BLER of PDCCH under customized configuration, determine threshold value Qin and Qout, the BLER of PDCCH wherein comprises the BLER of Physical Control Format Indicator Channel (PCFICH).But, due in practical communication application, may occur that UE is not scheduled, does not successfully detect the situation of the PDCCH that belongs to this UE, the BLER(that causes being difficult to measuring PDCCH comprises the BLER of PCFICH), thereby be easy in actual applications occur erroneous judgement; In addition, in existing LTE communication system, variation along with the received signal quality of pilot signal, transmitter mates the information data rate of each UE as possible, adopt link circuit self-adapting and based on AMC, and comprise the BLER of PCFICH during the monitoring wireless link-quality according to the BLER(of specific configuration statistics PDCCH), because threshold value Qin and Qout are static, can't change along with the variation of the variation of wireless environment and link circuit self-adapting, cause the reliability of radio link quality monitoring not high.

Summary of the invention

Embodiment of the present invention technical problem to be solved is: provide a kind of radio link quality monitoring method and device, wireless transmission receiving element, to improve accuracy and the reliability of radio link quality monitoring.

A kind of radio link quality monitoring method that the embodiment of the present invention provides comprises:

Receive radio frame signal by down wireless link, and obtain the cycle according to default, obtain the Block Error Rate of signal to noise ratio and/or the Traffic Channel of pilot signal in radio frame signal;

According to the Block Error Rate of the signal to noise ratio of obtaining and/or Traffic Channel, in conjunction with the Block Error Rate of Physical Downlink Control Channel, judge described down wireless link synchronously or step-out.

A kind of radio link quality monitoring device that the embodiment of the present invention provides comprises:

Receiving element, for receiving radio frame signal by down wireless link;

Acquiring unit, for obtaining the cycle according to default, obtain the Block Error Rate of signal to noise ratio and/or the Traffic Channel of pilot signal in described radio frame signal;

Decision unit, for the signal to noise ratio obtained according to described acquiring unit and/or the Block Error Rate of Traffic Channel, and in conjunction with the Block Error Rate of Physical Downlink Control Channel, judge the synchronous or step-out of described down wireless link.

A kind of wireless transmission receiving element that the embodiment of the present invention provides, comprise physical layer element and higher level unit;

Described physical layer element is used for receiving radio frame signal by down wireless link, and obtains the cycle according to default, obtains the Block Error Rate of signal to noise ratio and/or the Traffic Channel of pilot signal in radio frame signal; According to the Block Error Rate of the signal to noise ratio of obtaining and/or Traffic Channel, and in conjunction with the Block Error Rate of Physical Downlink Control Channel, judge the synchronous or step-out of described down wireless link, and send wireless link synchronization indication or radio link failure indication to the higher level unit;

Wireless link synchronization indication or radio link failure indication that described higher level unit sends for receiving physical layer element.

A kind of subscriber equipment that the embodiment of the present invention provides, comprise the wireless transmission receiving element that the above embodiment of the present invention provides.

The radio link quality monitoring method provided based on the above embodiment of the present invention and device, wireless transmission receiving element and subscriber equipment, be not limited to the BLER of statistics PDCCH, after receiving radio frame signal by down wireless link, can obtain the cycle according to default, obtain the signal to noise ratio of pilot signal in this radio frame signal received and/or the BLER of Traffic Channel, the SNR that concrete basis is obtained and/or the BLER of Traffic Channel, and, in conjunction with the BLER of PDCCH, judge the synchronous or step-out of down wireless link.

BLER according to the signal to noise ratio of pilot signal in radio frame signal in conjunction with PDCCH, while judging the synchronous or step-out of down wireless link, even UE is not scheduled, can't successfully detect the PDCCH that belongs to this UE, also can recently determine quality of down wireless link by the noise of pilot signal, thereby improve the reliability that down wireless link is synchronous or step-out is judged; In addition, even the BLER threshold value of the PDCCH set according to specific configuration can't be common to the actual disposition of current communication system, the signal to noise ratio of reference pilot signal, improved down wireless link is synchronous or step-out is judged reliability and accuracy.

BLER according to Traffic Channel, while judging the synchronous or step-out of down wireless link, even the BLER threshold value of the PDCCH set according to specific configuration can't be common to the actual disposition of current communication system, with reference to the BLER of Traffic Channel, down wireless link is synchronous or step-out is judged reliability and accuracy have been improved.

Thus, in the embodiment of the present invention, signal to noise ratio based on pilot signal in radio frame signal and/or the BLER of Traffic Channel, BLER in conjunction with PDCCH, the variation of the received signal quality obtained, can the Dynamic Acquisition radio link quality, considered the impact of the variation of the variation of wireless environment and link circuit self-adapting on radio link quality, the BLER of the signal to noise ratio of pilot signal and/or Traffic Channel in the comprehensive wireless frame signal, BLER in conjunction with PDCCH determines quality of down wireless link, avoided only relying on the BLER of PDCCH to adjudicate erroneous judgement and the lower problem of decision reliability that radio link quality may occur, accuracy and the reliability of radio link quality monitoring have been improved.

Below by drawings and Examples, technical scheme of the present invention is described in further detail.

The accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, in the situation that do not need to carry out the creativeness invention, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is a frame structure schematic diagram in the TD-LTE system under the 5ms switching cycle.

The flow chart that Fig. 2 is an embodiment of radio link quality monitoring method of the present invention.

The flow chart that Fig. 3 is another embodiment of radio link quality monitoring method of the present invention.

The flow chart that Fig. 4 is another embodiment of radio link quality monitoring method of the present invention.

The flow chart that Fig. 5 is another embodiment of radio link quality monitoring method of the present invention.

Fig. 6 is the also flow chart of an embodiment of radio link quality monitoring method of the present invention.

The flow chart that Fig. 7 is another embodiment of radio link quality monitoring method of the present invention.

The structural representation that Fig. 8 is an embodiment of radio link quality monitoring device of the present invention.

The structural representation that Fig. 9 is another embodiment of radio link quality monitoring device of the present invention.

The structural representation that Figure 10 is an embodiment of WTRU of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making under the creative work prerequisite the every other embodiment obtained, belong to the scope of protection of the invention.

The flow chart that Fig. 2 is an embodiment of radio link quality monitoring method of the present invention.As shown in Figure 2, this embodiment radio link quality monitoring method comprises:

101, receive radio frame signal by down wireless link, and obtain the cycle according to default, obtain pilot signal in this radio frame signal received signal to noise ratio (Signal To Noise Ratio, hereinafter to be referred as: SNR) and/or the BLER of Traffic Channel.

Exemplarily, the Traffic Channel in various embodiments of the present invention include but not limited to Physical Downlink Shared Channel (Physical Downlink Shared Channel, hereinafter to be referred as: PDSCH).

Radio frame signal wherein is the information that radio frames is carried.According to an example of the present invention and unrestricted, can obtain in the following way the SNR of pilot signal in radio frame signal: obtain available signal power value s and noise signal performance number n in radio frame signal; For example, can be estimated successively channel, noise reduction process to the pilot signal in radio frame signal, obtain a plurality of useful footpaths, and the average power of obtaining the plurality of useful footpath obtains available signal power value s, and obtain master sync signal (PSS) in radio frame signal or the average power of a plurality of subcarriers on secondary synchronizing signal (SSS) limit obtains noise signal performance number n; Obtain the default mean value that obtains s/n in the cycle, obtain the default pilot signal in radio frame signal obtained in the cycle

According to an example of the present invention and unrestricted, can obtain in the following way the BLER of Traffic Channel: obtain default CRC (the Cyclic Redundancy Check in the cycle that obtains, hereinafter to be referred as: CRC) the business data transmission piece in the Traffic Channel of mistake is counted A, obtain with default the ratio A/B that business data transmission piece total in the Traffic Channel received in the cycle is counted B by A, obtain the default BLER that obtains Traffic Channel in the cycle.

103, according to the BLER of the SNR obtained and/or Traffic Channel, and in conjunction with the BLER of PDCCH, judge the synchronous or step-out of down wireless link.

The BLER of PDCCH has wherein comprised the BLER of PCFICH.

In prior art, if UE is not scheduled, can't successfully detect the BLER of the PDCCH that belongs to this UE.In addition, while carrying out the radio link quality monitoring, the condition of judgement radio link failure is the BLER of PDCCH under customized configuration<10%, in practical communication system, the various configurations situation is arranged, and the threshold value that the BLER of the PDCCH arranged under customized configuration is 10% is just unreliable.

The radio link quality monitoring method that the above embodiment of the present invention provides, be not limited to the BLER of statistics PDCCH, after receiving radio frame signal by down wireless link, can obtain the cycle according to default, obtain the SNR of pilot signal in this radio frame signal received and/or the BLER of Traffic Channel, concrete SNR according to obtaining and/or the BLER of Traffic Channel, and in conjunction with the BLER of PDCCH, judge the synchronous or step-out of described down wireless link.

BLER according to the signal to noise ratio of pilot signal in radio frame signal in conjunction with PDCCH, while judging the synchronous or step-out of down wireless link, even UE is not scheduled, can't successfully detect the PDCCH that belongs to this UE, also can determine quality of down wireless link by the SNR of pilot signal, thereby improve the reliability that down wireless link is synchronous or step-out is judged; In addition, even the BLER threshold value of the PDCCH set according to specific configuration can't be common to the actual disposition of current communication system, the SNR of reference pilot signal, improved down wireless link is synchronous or step-out is judged reliability and accuracy.

Thus, in the embodiment of the present invention, SNR based on pilot signal in radio frame signal and/or the BLER of Traffic Channel, BLER in conjunction with PDCCH, the variation of the received signal quality obtained, can the Dynamic Acquisition radio link quality, considered the impact of the variation of the variation of wireless environment and link circuit self-adapting on radio link quality, the BLER of the SNR of pilot signal and/or Traffic Channel in the comprehensive wireless frame signal, BLER in conjunction with PDCCH determines quality of down wireless link, avoided only relying on the BLER of PDCCH to adjudicate erroneous judgement and the lower problem of decision reliability that radio link quality may occur, accuracy and the reliability of radio link quality monitoring have been improved.

The flow chart that Fig. 3 is another embodiment of radio link quality monitoring method of the present invention.As shown in Figure 3, this embodiment radio link quality monitoring method comprises:

201, receive radio frame signal by down wireless link, and obtain the cycle according to default, obtain the SNR of pilot signal in this radio frame signal received.

203, the SNR relatively got and the default SNR threshold value SNR of synchronizeing _In, default step-out SNR threshold value SNR _outRelation.

Particularly, SNR _In, SNR _outCan correspond respectively to the BLER threshold value of PDCCH under same wireless link-quality condition.For example, if judge, the BLER threshold value of the default synchronous PDCCH of wireless link synchronization is 2%, SNR _InCan be the BLER value of PDCCH SNR value corresponding to radio link quality while being 2%; If judge, the BLER threshold value of the default synchronous PDCCH of radio link failure is 10%, SNR _outCan be the BLER value of PDCCH SNR value corresponding to radio link quality while being 10%.Wherein, SNR _out, default step-out PDCCH the BLER threshold value be the step-out threshold value, when descending radio link quality does not reach the step-out threshold value, UE can not receive the down wireless link signal reliably.SNR _In, default synchronous PDCCH the BLER threshold value be synchronization threshold, when descending radio link quality reaches synchronization threshold, with respect to the step-out threshold value, UE can receive the down wireless link signal reliably.

If the SNR got is more than or equal to SNR _In, think and meet synchronous condition, carry out 205 operation.If the SNR got is less than SNR _out, think and meet the step-out condition, carry out 207 operation.Otherwise, if the SNR got is more than or equal to SNR _outAnd be less than SNR _In, carry out 209 operation.

205, respectively by the counter Counter of synchronous regime _InCounter Counter with all states _sumCumulative 1.Wherein, Counter _sumEqual the counter Counter of desynchronizing state _out, Counter _In, and the counter Counter of intermediateness _medSum, intermediateness, between desynchronizing state and synchronous regime, belongs to the state when neither meeting synchronous condition and also not meeting the step-out condition, Counter _outAt the initial value of each desynchronizing state in assessment cycle, be zero.

Afterwards, carry out 211 operation.

207, respectively by Counter _outWith Counter _sumCumulative 1.

Afterwards, carry out 211 operation.

209, respectively by Counter _medWith Counter _sumCumulative 1.

Afterwards, carry out 211 operation.

211, according to Counter _out, Counter _InWith the BLER of PDCCH, judge down wireless link synchronously or step-out.

The radio link quality monitoring method that the above embodiment of the present invention provides, be not limited to the BLER of statistics PDCCH, after receiving radio frame signal by down wireless link, can obtain the cycle according to default, obtain the SNR of pilot signal in this radio frame signal received, the concrete SNR according to obtaining, in conjunction with the BLER of PDCCH, judges described down wireless link synchronously or step-out.Like this, even UE is not scheduled, can't successfully detect the PDCCH that belongs to this UE, also can determine quality of down wireless link by the SNR of pilot signal, thereby improve the reliability that down wireless link is synchronous or step-out is judged; In addition, even the BLER threshold value of the PDCCH set according to specific configuration can't be common to the actual disposition of current communication system, the SNR of reference pilot signal, improved down wireless link is synchronous or step-out is judged reliability and accuracy.Thus, the embodiment of the present invention can the Dynamic Acquisition radio link quality, considered the impact of the variation of the variation of wireless environment and link circuit self-adapting on radio link quality, in the comprehensive wireless frame signal, the SNR of pilot signal determines quality of down wireless link in conjunction with the BLER of PDCCH, avoid only relying on the BLER of PDCCH to adjudicate erroneous judgement and the lower problem of decision reliability that radio link quality may occur, improved accuracy and the reliability of radio link quality monitoring.In addition, by the counter that synchronous regime, desynchronizing state are set, judge down wireless link synchronously or step-out, further improved accuracy and the reliability of radio link quality monitoring.

The flow chart that Fig. 4 is another embodiment of radio link quality monitoring method of the present invention.As shown in Figure 4, this embodiment radio link quality monitoring method comprises:

301, receive radio frame signal by down wireless link, and obtain the cycle according to default, obtain the BLER of Traffic Channel.

303, the relation of the BLER threshold value of the BLER of the Traffic Channel relatively got and default Traffic Channel.In a concrete example of the embodiment of the present invention, the BLER threshold value of default Traffic Channel is specially 1, by higher step-out determining condition, avoids misinterpretation down wireless link step-out as far as possible, thereby reduces the interruption of communication service.In addition, the BLER threshold value of default Traffic Channel can also be other numerical value in [0,1].

Particularly, the BLER threshold value of default Traffic Channel can correspond respectively to the BLER threshold value of PDCCH under same wireless link-quality condition.The BLER threshold value of the default Traffic Channel adopted while exemplarily, can the setting wireless link synchronization judging with step-out is identical.Wherein, the BLER threshold value of the BLER threshold value of default Traffic Channel, default step-out PDCCH is the step-out threshold value, and when descending radio link quality does not reach the step-out threshold value, UE can not receive the down wireless link signal reliably.The BLER threshold value of the BLER threshold value of default Traffic Channel, default synchronous PDCCH is synchronization threshold, and when descending radio link quality reaches synchronization threshold, with respect to the step-out threshold value, UE can receive the down wireless link signal reliably.

If the BLER of the Traffic Channel got is less than the BLER threshold value of default Traffic Channel, think and meet synchronous condition, carry out 305 operation.Otherwise, if the BLER of the Traffic Channel got is more than or equal to the BLER threshold value of default Traffic Channel, thinks and meet the step-out condition, carry out 307 operation.

305, respectively by the counter Counter of synchronous regime _InCounter Counter with all states _sumCumulative 1.Wherein, Counter _sumEqual the counter Counter of desynchronizing state _out, Counter _In, and the counter Counter of intermediateness _medSum, intermediateness, between desynchronizing state and synchronous regime, belongs to the state when neither meeting synchronous condition and also not meeting the step-out condition, Counter _outAt the initial value of each desynchronizing state in assessment cycle, be zero.

Afterwards, carry out 309 operation.

307, respectively by Counter _outWith Counter _sumCumulative 1.

309, according to Counter _out, Counter _InWith the BLER of PDCCH, judge down wireless link synchronously or step-out.

The radio link quality monitoring method that the above embodiment of the present invention provides, be not limited to the BLER of statistics PDCCH, after receiving radio frame signal by down wireless link, can obtain the cycle according to default, obtain the BLER of this Traffic Channel received, specifically according to the BLER of Traffic Channel, and in conjunction with the BLER of PDCCH, judge the synchronous or step-out of described down wireless link.Like this, even the BLER threshold value of the PDCCH set according to specific configuration can't be common to the actual disposition of current communication system, with reference to the BLER of Traffic Channel, down wireless link is synchronous or step-out is judged reliability and accuracy have been improved.Thus, the embodiment of the present invention has avoided only relying on the BLER of PDCCH to adjudicate erroneous judgement and the lower problem of decision reliability that radio link quality may occur, has improved accuracy and the reliability of radio link quality monitoring.In addition, by the counter that synchronous regime, desynchronizing state are set, judge down wireless link synchronously or step-out, further improved accuracy and the reliability of radio link quality monitoring.

The flow chart that Fig. 5 is another embodiment of radio link quality monitoring method of the present invention.As shown in Figure 5, this embodiment radio link quality monitoring method comprises:

401, receive radio frame signal by down wireless link, and obtain the cycle according to default, obtain the SNR of pilot signal in this radio frame signal received and the BLER of Traffic Channel.

403, the SNR relatively got and the default SNR threshold value SNR of synchronizeing _In, default step-out SNR threshold value SNR _outRelation, and the relation of the BLER threshold value of the BLER of the Traffic Channel got and default Traffic Channel.In a concrete example of the embodiment of the present invention, the BLER threshold value of default Traffic Channel is specially 1, by higher step-out determining condition, avoids misinterpretation down wireless link step-out as far as possible, thereby reduces the interruption of communication service.In addition, the BLER threshold value of default Traffic Channel can also be other numerical value in [0,1].

Particularly, SNR _In, SNR _outCan correspond respectively to the BLER threshold value of PDCCH under same wireless link-quality condition.For example, if judge, the BLER threshold value of the default synchronous PDCCH of wireless link synchronization is 2%, SNR _InCan be the BLER value of PDCCH SNR value corresponding to radio link quality while being 2%; If judge, the BLER threshold value of the default synchronous PDCCH of radio link failure is 10%, SNR _outCan be the BLER value of PDCCH SNR value corresponding to radio link quality while being 10%.Equally, the BLER threshold value of default Traffic Channel also can correspond respectively to the BLER threshold value of PDCCH under same wireless link-quality condition.The BLER threshold value of the default Traffic Channel adopted while exemplarily, can the setting wireless link synchronization judging with step-out is identical.Wherein, SNR _out, the BLER threshold value of default Traffic Channel, the BLER threshold value of default step-out PDCCH be the step-out threshold value, when descending radio link quality does not reach the step-out threshold value, UE can not receive the down wireless link signal reliably.SNR _In, the BLER threshold value of default Traffic Channel, the BLER threshold value of default synchronous PDCCH be synchronization threshold, when descending radio link quality reaches synchronization threshold, with respect to the step-out threshold value, UE can receive the down wireless link signal reliably.

If the SNR got is more than or equal to SNR _InThe BLER of the Traffic Channel perhaps got is less than the BLER threshold value of default Traffic Channel, thinks and meets synchronous condition, carries out 405 operation.If the SNR got is less than SNR _outAnd the BLER of the Traffic Channel got is more than or equal to the BLER threshold value of default Traffic Channel, thinks and meets the step-out condition, carries out 407 operation.Otherwise, if the SNR got is more than or equal to SNR _outAnd be less than SNR _In, carry out 409 operation.

405, respectively by the counter Counter of synchronous regime _InCounter Counter with all states _sumCumulative 1.Wherein, Counter _sumEqual the counter Counter of desynchronizing state _out, Counter _In, and the counter Counter of intermediateness _medSum, intermediateness, between desynchronizing state and synchronous regime, belongs to the state when neither meeting synchronous condition and also not meeting the step-out condition, Counter _outAt the initial value of each desynchronizing state in assessment cycle, be zero.

Afterwards, carry out 411 operation.

407, respectively by Counter _outWith Counter _sumCumulative 1.

Afterwards, carry out 411 operation.

409, respectively by Counter _medWith Counter _sumCumulative 1.

Afterwards, carry out 411 operation.

411, according to Counter _out, Counter _InWith the BLER of PDCCH, judge down wireless link synchronously or step-out.

The radio link quality monitoring method that the above embodiment of the present invention provides, can preset the SNR corresponding with the BLER threshold value of PDCCH under same wireless link-quality condition and the BLER threshold value of Traffic Channel, after receiving radio frame signal by down wireless link, can obtain the cycle according to default, obtain the SNR of pilot signal in this radio frame signal received and the BLER of Traffic Channel, the concrete SNR according to obtaining, the BLER of Traffic Channel, and synchronous regime is set, the counter of desynchronizing state, again in conjunction with the BLER of PDCCH, only be confined to add up the BLER of PDCCH with respect to prior art, judge the synchronous or step-out of described down wireless link, accuracy and the reliability of radio link quality monitoring have been improved, avoided only relying on the BLER of PDCCH to adjudicate erroneous judgement and the lower problem of decision reliability that radio link quality may occur, and, the BLER of comprehensive SNR, Traffic Channel and PDCCH determines quality of down wireless link, can the Dynamic Acquisition radio link quality, considered the impact of the variation of the variation of wireless environment and link circuit self-adapting on radio link quality, further effective guarantee accuracy and the reliability of radio link quality monitoring.

Fig. 6 is the also flow chart of an embodiment of radio link quality monitoring method of the present invention.As shown in Figure 6, in this embodiment, specifically can realize in the following way 211,309 or 411 operation, judge down wireless link synchronously or step-out:

501, identification Counter _sumWhether reach default radio frames corresponding to synchronous slide window.In response to Counter _sumReach default radio frames corresponding to step-out sliding window, carry out 503 operation.Otherwise, do not carry out the follow-up flow process of the present embodiment.

503, obtain the BLER that presets PDCCH in the synchronous slide window, the BLER of this PDCCH has comprised the BLER of PCFICH.

According to an example of the present invention and unrestricted, specifically can obtain in the following way the BLER of PDCCH in default sliding window: obtain the business data transmission piece that detects wrong PDCCH in default sliding window and count C, the ratio C/D that counts D by detecting total business data transmission piece in wrong PDCCH in C and default sliding window obtains the BLER of the interior PDCCH of default sliding window.

505, identification Counter _InWhether reach default synchronous counting threshold value, and in default synchronous slide window, whether the BLER of PDCCH is greater than the BLER threshold value of presetting synchronous PDCCH.In a concrete example of the embodiment of the present invention, the BLER threshold value of default synchronous PDCCH is specially 2%, can also be other numerical value in 0～100%; Default synchronous counting threshold value is specially 1, and to realize the synchronization decisions success rate of higher wireless link, in addition, default synchronous counting threshold value also can be got the integer value that other is greater than 0.Due to OFDM (the Orthogonal Frequency Division Multiplexing transmitted for PDCCH in subframe of PCFICH carrying, hereinafter to be referred as: the OFDM) information of symbol numbers, in various embodiments of the present invention, the BLER of PDCCH has comprised the BLER of PCFICH.

If Counterin reaches default synchronous counting threshold value, or in default synchronous slide window, the BLER of PDCCH is not more than the BLER threshold value of presetting synchronous PDCCH, carries out 507 operation.Otherwise, Counter _InDo not reach default synchronous counting threshold value, and in default synchronous slide window, the BLER of PDCCH is greater than the BLER threshold value of presetting synchronous PDCCH, carries out 509 operation.

507, judge that down wireless link is synchronous.

Afterwards, do not carry out the follow-up flow process of the present embodiment.Can exemplarily to the higher layer entities unit, send the wireless link synchronization indication.

509, identification Counter _sumWhether reach default radio frames corresponding to step-out sliding window.In response to Counter _sumReach default radio frames corresponding to step-out sliding window, carry out 311 operation.Otherwise, do not carry out the follow-up flow process of the present embodiment.

511, identification Counter _outWhether reach default step-out counting threshold value, and in default step-out sliding window, whether the BLER of PDCCH is greater than the BLER threshold value of presetting step-out PDCCH.In a concrete example of the embodiment of the present invention, the BLER threshold value of default step-out PDCCH is specially Counter _sum* 80%, can also be Counter _sumOther numerical value in number range; The BLER threshold value of default step-out PDCCH is specially 10%, can also be other numerical value in 0～100%.

If Counter _outReach default step-out counting threshold value, and in default step-out sliding window, the BLER of PDCCH is greater than the BLER threshold value of presetting step-out PDCCH, carries out 513 operation.Otherwise, do not carry out the follow-up flow process of the present embodiment.

513, judge the down wireless link step-out.

Afterwards, can exemplarily to the higher layer entities unit, send the radio link failure indication.

The radio link quality monitoring method that the above embodiment of the present invention provides, can preset the SNR corresponding with the BLER threshold value of PDCCH under same wireless link-quality condition and the BLER threshold value of Traffic Channel, after receiving radio frame signal by down wireless link, can obtain the cycle according to default, obtain the SNR of pilot signal in this radio frame signal received and the BLER of Traffic Channel, concrete SNR, the BLER of Traffic Channel according to obtaining, and, in conjunction with the BLER that presets the PDCCH of statistics in sliding window, judge described down wireless link synchronously or step-out.Thereby can the Dynamic Acquisition radio link quality, considered the impact of the variation of the variation of wireless environment and link circuit self-adapting on radio link quality, the BLER of comprehensive SNR, Traffic Channel and PDCCH determines quality of down wireless link, avoid only relying on the BLER of PDCCH to adjudicate erroneous judgement and the lower problem of decision reliability that radio link quality may occur, improved accuracy and the reliability of radio link quality monitoring.

In order to reduce the UE power consumption, preserve wireless transmission receiving element (Wireless transmission/receive unit, hereinafter to be referred as: battery electric quantity WTRU), extend service time of battery, reduce intrasystem interference, improve frequency efficiency, increase power system capacity, in the WTRU of LTE compatibility and base station (also referred to as enode b or eNodeB, hereinafter to be referred as: (Discontinuous reception, hereinafter to be referred as connection status DRX) to have introduced discontinuous reception eNB).During not enabled DRX connection status, WTRU is under non-DRX pattern.When enabling the DRX connection status, WTRU is under the DRX pattern.

The radio link quality monitoring method of the various embodiments described above of the present invention can be carried out for a WTRU.Work mode configuration information in the broadcast that WTRU can send according to eNB is enabled the DRX connection status, and introduce the DRX connection status between eNB, and WTRU is configured to semi-persistent scheduling, and (Semi-Persistent Scheduling, hereinafter to be referred as SPS) state.

In the radio link quality monitoring method of the various embodiments described above, whether the present mode that can also identify WTRU is the DRX pattern.If present mode is non-DRX pattern, the above-mentioned default cycle of obtaining can be specifically a radio frames, obtains the SNR of pilot signal in the radio frame signal received and the BLER of Traffic Channel in each radio frames that is:.For simplicity, in the embodiment of the present invention, the BLER of Traffic Channel under non-DRX pattern is expressed as to BLER _{Traffic Channel}Default synchronous slide window can be specifically M wireless frame length, default step-out sliding window can be specifically N wireless frame length, that is: while judging whether to meet synchronous condition, M the wireless frame length of take obtains the BLER of PDCCH as the cycle, while judging whether to meet the step-out condition, N the wireless frame length of take obtains the BLER of PDCCH as the cycle.For simplicity, in the embodiment of the present invention, the BLER of PDCCH under non-DRX pattern is expressed as to BLER _PDCCH.Wherein, M, N are greater than 1 integer, and M<N.For example, the value of M is 10 o'clock, and default synchronous slide window is 10 wireless frame length 100ms; The value of N is 20 o'clock, and default step-out sliding window is 20 wireless frame length 200ms, now, operates in 503, in the sliding window of 100ms, adds up BLER _PDCCHIn operation 511, in the sliding window of 200ms, add up BLER _PDCCH.

As WTRU, in DRX pattern lower time, WTRU be take the DRX circulation as cycling, and each DRX circulation comprises the duration of the unlatching (also referred to as waking up the Measuring Time cycle) and between rest period.WTRU carries out transmission and the reception of data the duration opening, and does not carry out transmission and the reception of data between rest period.If present mode is the DRX pattern, the duration of unlatching that the default cycle of obtaining is WTRU (also referred to as waking up the Measuring Time cycle), that is: obtain the radio frame signal received the duration that each is opened in the SNR of pilot signal and the BLER of Traffic Channel.For simplicity, in the embodiment of the present invention, the BLER of Traffic Channel under the DRX pattern is expressed as to BLER _{PDSCH_DRX}Default synchronous slide window is specially default synchronous assessment cycle T _Evaluate_ Q _{In_DRX}, default step-out sliding window is specially default step-out assessment cycle T _Evaluate_ Q _{Out_DRX}.Wherein, T _Evaluate_ Q _{In_DRX}<T _Evaluate_ Q _{Out_DRX}.That is: while judging whether to meet synchronous condition, to preset synchronous assessment cycle T _Evaluate_ Q _{In_DRX}For the cycle is obtained the BLER of PDCCH, while judging whether to meet the step-out condition, to preset step-out assessment cycle T _Evaluate_ Q _{Out_DRX}For the cycle is obtained the BLER of PDCCH.For simplicity, in the embodiment of the present invention, the BLER of PDCCH under the DRX pattern is expressed as to BLER _{PDCCH_DRX}.

Under non-DRX pattern, when WTRU be configured to semi-persistent scheduling (Semi-Persistent Scheduling, hereinafter to be referred as: SPS) during pattern, PDCCH is periodic scheduling, according to the regulation of 3GPP agreement TS36.331, in WTRU, example dispatching cycle of configuration SPS is as follows:

Wherein, sf10, sf20, sf32, sf40, sf64, sf80, sf128, sf160, sf320, sf640 means that respectively be 10ms, 20ms, 32ms, 40ms, 64ms, 80ms, 128ms, 160ms, 320ms and 640ms the dispatching cycle of the SPS of configuration.Hence one can see that, likely is longer than default synchronous slide window, default step-out sliding window the dispatching cycle of SPS.While being longer than default synchronous slide window, default step-out sliding window the dispatching cycle of SPS, just can't in corresponding default synchronous slide window, default step-out sliding window, add up BLER _PDCCH.

The flow chart that Fig. 7 is another embodiment of radio link quality monitoring method of the present invention.When the present mode of WTRU is non-DRX pattern, as shown in Figure 7, with above-described embodiment, compare, this embodiment also comprises following flow process:

601, whether identification WTRU is configured to the SPS pattern.

If WTRU is configured to the SPS pattern, carry out 603 operation.Otherwise, if WTRU is not configured to the SPS pattern, carry out according to Counter _out, Counter _InWith the BLER of PDCCH, judge the operation of the synchronous or step-out of down wireless link, specifically can realize by 501～511 operation shown in Fig. 6.

603, identification Counter _sumWhether reach default radio frames corresponding to synchronous slide window.If Counter _sumReach default radio frames corresponding to synchronous slide window, carry out 605 operation.Otherwise, do not carry out the follow-up flow process of the present embodiment.

605, whether identification SPS is greater than default synchronous slide window dispatching cycle.If SPS is greater than default synchronous slide window dispatching cycle, carry out 607 operation.Otherwise, if SPS is less than or equal to default synchronous slide window dispatching cycle, by 505 ~ 313 operation, judge down wireless link synchronously or step-out.

Because default synchronous slide window is less than the length of default step-out sliding window, therefore, when SPS is less than or equal to default synchronous slide window dispatching cycle, SPS is less than default step-out sliding window dispatching cycle.

607, identification Counter _InWhether reach default synchronous counting threshold value.If Counter _InReach default synchronous counting threshold value, carry out 507 operation, judge that down wireless link is synchronous.Afterwards, do not carry out the follow-up flow process of the present embodiment.Can exemplarily to the higher layer entities unit, send the wireless link synchronization indication.

Otherwise, if Counter _InDo not reach default synchronous counting threshold value, carry out 609 operation.

609, identification Counter _sumWhether reach default radio frames corresponding to step-out sliding window.If Counter _sumReach default radio frames corresponding to step-out sliding window, carry out 611 operation.Otherwise, do not carry out the follow-up flow process of the present embodiment.

611, whether identification SPS is greater than default step-out sliding window dispatching cycle.If SPS is greater than default step-out sliding window dispatching cycle, carry out 613 operation.Otherwise, if SPS is less than or equal to default step-out sliding window dispatching cycle, carry out 511～513 operation.

613, identification Counter _outWhether reach default step-out counting threshold value.If Counter _outReach default step-out counting threshold value, carry out 513 operation, judge the down wireless link step-out.Afterwards, can exemplarily to the higher layer entities unit, send the radio link failure indication.

Otherwise, if Counter _outDo not reach default step-out counting threshold value, do not carry out the follow-up flow process of the present embodiment.

In the embodiment shown in above-mentioned Fig. 7, under non-DRX pattern, at first identify WTRU and whether be configured to the SPS pattern.When WTRU is configured to the SPS pattern, whether identification SPS is greater than default synchronous slide window, default step-out sliding window dispatching cycle, if SPS is not more than default synchronous slide window, default step-out sliding window dispatching cycle, obtain the BLER in corresponding sliding window in the embodiment of the present invention _PDCCH, comprehensive SNR, BLER _PDSCHWith BLER _PDCCHJudge wireless link synchronization or step-out.When SPS is greater than default synchronous slide window or default step-out sliding window dispatching cycle, can't monitor the BLER of PDCCH, the embodiment of the present invention is not added up the BLER in corresponding sliding window _PDCCH, in conjunction with SNR and BLER _PDSCHJudge wireless link synchronization or step-out, thus the monitoring of radio link quality while having realized SPS is greater than to default synchronous slide window or default step-out sliding window dispatching cycle.

Because tri-parameters of BLER that comprehensive SNR, Traffic Channel and PDCCH are shown embodiment illustrated in fig. 5 are determined the implementation of quality of down wireless link, in accompanying drawing 6, accompanying drawing 7, the schematically illustrated example comprised in embodiment illustrated in fig. 5 only, Fig. 6, embodiment illustrated in fig. 7 respectively in conjunction with Fig. 3, accompanying drawing embodiment illustrated in fig. 4, those skilled in the art can the content based on the above embodiment of the present invention record obtain, and repeat no more.

In the radio link quality monitoring method of the various embodiments described above of the present invention, under non-DRX pattern, physical layer element sends two adjacent wireless link synchronization and/or interval from step-out indication to the higher level unit can at least reach 10ms.When the higher level unit receives step-out indication that physical layer element sends continuously and reaches predetermined number, can start a timer, that is: the name of the 5.3.11 of 3GPP standard TS36.331 joint regulation is called the T310 timer of T310, carries out timing.The T310 timer expiry, judge Radio Link Failure (Radio link failure, hereinafter to be referred as: RLF), also referred to as radio link failure.If WTRU is arranged in UE, after WTRU in UE judgement radio link failure, in order to reduce the interference of other UE and to conserve battery charge, after the T310 timer expiry, UE can close transmitter in 40ms, stops the ascending power emission.

As shown in table 2 below, be default step-out assessment cycle T under the DRX pattern _{Evaluate_Qout_DRX}With default synchronous assessment cycle T _{Evaluate_Qin_DRX}A parameter information example.Wherein, 20,10,5 in Note (20), Note (10) and Note (5) means the quantity of DRX circulations (cycle).Under the DRX pattern, physical layer element sends two adjacent wireless link synchronization to the higher level unit and/or step-out indication interval at least can reach the higher value in 10ms and DRX length of the cycle.The higher level unit receives the continuous step-out sent of physical layer element and indicates while reaching predetermined number, can start the T310 timer and carry out timing.And after the T310 timer starts, the recovery situation of monitoring wireless link is carried out at the adjacent synchronous and/or interval step-out indication of default synchronous slide window during according to non-DRX pattern, default step-out sliding window, two, until the T310 timer expiry is judged radio link failure.After UE judgement radio link failure, in order to reduce the interference of other UE and to conserve battery charge, after the T310 timer expiry, UE should close transmitter in 40ms, stops the ascending power emission.

T under table 2DRX pattern _Evaluate_ Q _{Out_DRX}And T _Evaluate_ Q _{In_DRX}Parameter information

The structural representation that Fig. 8 is an embodiment of radio link quality monitoring device of the present invention.The radio link quality monitoring device of this embodiment can be used in the present invention the flow process of above-mentioned each radio link quality monitoring method embodiment.As shown in Figure 8, it comprises receiving element 701, acquiring unit 703 and decision unit 705.

Wherein, receiving element 701, for receiving radio frame signal by down wireless link.

Acquiring unit 703, for obtaining the cycle according to default, obtain the SNR of pilot signal in the radio frame signal that receiving element 701 receives and/or the BLER of Traffic Channel; Exemplarily, the Traffic Channel in various embodiments of the present invention includes but not limited to PDSCH.

Decision unit 705, for the SNR that obtains according to acquiring unit 703 and/or the BLER of Traffic Channel, and in conjunction with the BLER of PDCCH, judge the synchronous or step-out of down wireless link.

The radio link quality monitoring device provided based on the above embodiment of the present invention, be not limited to the BLER of statistics PDCCH, after receiving radio frame signal by down wireless link, can obtain the cycle according to default, obtain the SNR of pilot signal in this radio frame signal received and/or the BLER of Traffic Channel, concrete SNR according to obtaining and/or the BLER of Traffic Channel, and in conjunction with the BLER of PDCCH, judge the synchronous or step-out of described down wireless link.

The structural representation that Fig. 9 is another embodiment of radio link quality monitoring device of the present invention.The radio link quality monitoring device of this embodiment can be used in the present invention the flow process of the monitoring method of radio link quality shown in Fig. 2 embodiment.As shown in Figure 9, with the embodiment shown in Fig. 8, compare, in the radio link quality monitoring device of this embodiment, decision unit 705 specifically comprises comparison subelement 801, count sub-element 803 and judgement subelement 805.

Therein in specific embodiment, subelement 801 relatively, for SNR and the SNR that relatively acquiring unit 703 gets _In, SNR _outRelation.

Count sub-element 803, for the comparative result according to comparing subelement 801, if the SNR got is more than or equal to SNR _In, respectively by the counter Counter of synchronous regime _InCounter Counter with all states _sumAdd up 1, wherein, Counter _sumEqual the counter Counter of desynchronizing state _out, Counter _In, and the counter Counter of intermediateness _medSum, intermediateness between desynchronizing state and synchronous regime, Counter _outAt the initial value of each desynchronizing state in assessment cycle, be zero; If the SNR got is more than or equal to SNR _out, respectively by Counter _outWith Counter _sumCumulative 1; Otherwise, if the SNR got is more than or equal to SNR _outAnd be less than SNR _In, respectively by Counter _medWith Counter _sumCumulative 1.

Judgement subelement 805, for the Counter counted to get according to count sub-element 803 _out, Counter _InWith the BLER of PDCCH, judge down wireless link synchronously or step-out.

The radio link quality monitoring device that above-described embodiment provides, be not limited to the BLER of statistics PDCCH, after receiving radio frame signal by down wireless link, can obtain the cycle according to default, obtain the SNR of pilot signal in this radio frame signal received, the concrete SNR according to obtaining, in conjunction with the BLER of PDCCH, judges described down wireless link synchronously or step-out.Like this, even UE is not scheduled, can't successfully detect the PDCCH that belongs to this UE, also can determine quality of down wireless link by the SNR of pilot signal, thereby improve the reliability that down wireless link is synchronous or step-out is judged; In addition, even the BLER threshold value of the PDCCH set according to specific configuration can't be common to the actual disposition of current communication system, the SNR of reference pilot signal, improved down wireless link is synchronous or step-out is judged reliability and accuracy.Thus, the embodiment of the present invention can the Dynamic Acquisition radio link quality, considered the impact of the variation of the variation of wireless environment and link circuit self-adapting on radio link quality, in the comprehensive wireless frame signal, the SNR of pilot signal determines quality of down wireless link in conjunction with the BLER of PDCCH, avoid only relying on the BLER of PDCCH to adjudicate erroneous judgement and the lower problem of decision reliability that radio link quality may occur, improved accuracy and the reliability of radio link quality monitoring.In addition, by the counter that synchronous regime, desynchronizing state are set, judge down wireless link synchronously or step-out, further improved accuracy and the reliability of radio link quality monitoring.

In another specific embodiment, compare subelement 801 therein, the relation of the BLER of the Traffic Channel got for comparison acquiring unit 703 and the BLER threshold value of default Traffic Channel.

Count sub-element 803, for the comparative result according to comparing subelement 801, if the BLER of the Traffic Channel got is less than the BLER threshold value of default Traffic Channel, respectively by the counter Counter of synchronous regime _InCounter Counter with all states _sumAdd up 1, wherein, Counter _sumEqual the counter Counter of desynchronizing state _out, Counter _In, and the counter Counter of intermediateness _medSum, intermediateness between desynchronizing state and synchronous regime, Counter _outAt the initial value of each desynchronizing state in assessment cycle, be zero; If the BLER of the Traffic Channel got is more than or equal to the BLER threshold value of default Traffic Channel, respectively by Counter _outWith Counter _sumCumulative 1.

The radio link quality monitoring device that the above embodiment of the present invention provides, be not limited to the BLER of statistics PDCCH, after receiving radio frame signal by down wireless link, can obtain the cycle according to default, obtain the BLER of this Traffic Channel received, specifically according to the BLER of Traffic Channel, and in conjunction with the BLER of PDCCH, judge the synchronous or step-out of described down wireless link.Like this, even the BLER threshold value of the PDCCH set according to specific configuration can't be common to the actual disposition of current communication system, with reference to the BLER of Traffic Channel, down wireless link is synchronous or step-out is judged reliability and accuracy have been improved.Thus, the embodiment of the present invention has avoided only relying on the BLER of PDCCH to adjudicate erroneous judgement and the lower problem of decision reliability that radio link quality may occur, has improved accuracy and the reliability of radio link quality monitoring.In addition, by the counter that synchronous regime, desynchronizing state are set, judge down wireless link synchronously or step-out, further improved accuracy and the reliability of radio link quality monitoring.

Therein in another specific embodiment,, subelement 801 relatively, for SNR and the SNR that relatively acquiring unit 703 gets _In, SNR _outRelation, and the relation of the BLER threshold value of the BLER of the Traffic Channel that gets of acquiring unit 703 and default Traffic Channel.

Count sub-element 803, for the comparative result according to comparing subelement 801, if the SNR got is more than or equal to SNR _InThe BLER of the Traffic Channel perhaps got is less than the BLER threshold value of default Traffic Channel, respectively by the counter Counter of synchronous regime _InCounter Counter with all states _sumAdd up 1, wherein, Counter _sumEqual the counter Counter of desynchronizing state _out, Counter _In, and the counter Counter of intermediateness _medSum, intermediateness between desynchronizing state and synchronous regime, Counter _outAt the initial value of each desynchronizing state in assessment cycle, be zero; If the SNR got is more than or equal to SNR _outAnd the BLER of the Traffic Channel got is more than or equal to the BLER threshold value of default Traffic Channel, respectively by Counter _outWith Counter _sumCumulative 1; Otherwise, if the SNR got is more than or equal to SNR _outAnd be less than SNR _In, respectively by Counter _medWith Counter _sumCumulative 1.

The radio link quality monitoring device that above-described embodiment provides, can preset the SNR corresponding with the BLER threshold value of PDCCH under same wireless link-quality condition and the BLER threshold value of Traffic Channel, after receiving radio frame signal by down wireless link, can obtain the cycle according to default, obtain the SNR of pilot signal in this radio frame signal received and the BLER of Traffic Channel, the concrete SNR according to obtaining, the BLER of Traffic Channel, and synchronous regime is set, the counter of desynchronizing state, again in conjunction with the BLER of PDCCH, only be confined to add up the BLER of PDCCH with respect to prior art, judge the synchronous or step-out of described down wireless link, accuracy and the reliability of radio link quality monitoring have been improved, avoided only relying on the BLER of PDCCH to adjudicate erroneous judgement and the lower problem of decision reliability that radio link quality may occur, and, the BLER of comprehensive SNR, Traffic Channel and PDCCH determines quality of down wireless link, can the Dynamic Acquisition radio link quality, considered the impact of the variation of the variation of wireless environment and link circuit self-adapting on radio link quality, further effective guarantee accuracy and the reliability of radio link quality monitoring.

Example of radio link quality monitoring device embodiment according to the present invention and unrestricted, with radio link quality monitoring method shown in Fig. 6 of the present invention, embodiment is corresponding, in the radio link quality monitoring device of three specific embodiments shown in Fig. 9, the Counter that judgement subelement 805 specifically can indicate comparison subelement 801 identification count sub-element 803 to count to get _sumWhether reach default radio frames corresponding to synchronous slide window; According to the recognition result that compares subelement 801, in response to Counter _sumReach default radio frames corresponding to step-out sliding window, indication acquiring unit 703 obtains the BLER of PDCCH in default synchronous slide window; And the indication Counter that relatively subelement 801 identification count sub-element 803 count to get _InWhether reach default synchronous counting threshold value, and in default synchronous slide window, whether the BLER of PDCCH is greater than the BLER threshold value of presetting synchronous PDCCH; And according to the recognition result that compares subelement 801, if Counter _InReach default synchronous counting threshold value, or in default synchronous slide window, the BLER of PDCCH is not more than the BLER threshold value of presetting synchronous PDCCH, judges that down wireless link is synchronous;

Otherwise, Counter _InDo not reach default synchronous counting threshold value, and in default synchronous slide window, the BLER of PDCCH is greater than the BLER threshold value of presetting synchronous PDCCH, judgement subelement 805 specifically can be indicated comparison subelement 801 identification Counter _sumWhether reach default radio frames corresponding to step-out sliding window; And according to the recognition result that compares subelement 801, in response to Counter _sumReach default radio frames corresponding to step-out sliding window, indication is subelement 801 identification Counter relatively _outWhether reach default step-out counting threshold value, and in default step-out sliding window, whether the BLER of PDCCH is greater than the BLER threshold value of presetting step-out PDCCH; And according to the recognition result that compares subelement 801, if Counter _outReach default step-out counting threshold value, and in default step-out sliding window, the BLER of PDCCH is greater than the BLER threshold value of presetting step-out PDCCH, judges the down wireless link step-out.

Again referring to Fig. 9, another example of the embodiment of radio link quality monitoring device according to the present invention and unrestricted, with the above-mentioned radio link quality monitoring method of the present invention, embodiment is corresponding, also comprise the first recognition unit 707, for identify this radio link quality monitoring device for the present mode of WTRU whether be the DRX pattern.

Exemplarily, if the present mode of WTRU is the DRX pattern, the default cycle of obtaining of acquiring unit 703, the duration of being specifically as follows the unlatching of WTRU, the default synchronous slide window of acquiring unit 703 was specifically as follows default synchronous assessment cycle T _Evaluate_ Q _{In_DRX}, the default step-out sliding window of acquiring unit 703 is specifically as follows default step-out assessment cycle T _Evaluate_ Q _{Out_DRX}.Wherein, T _Evaluate_ Q _{In_DRX}<T _Evaluate_ Q _{Out_DRX}.

Exemplarily, if the present mode of WTRU is non-DRX pattern, the default cycle of obtaining of acquiring unit 703 is specifically as follows a radio frames, the default synchronous slide window of acquiring unit 703 is specifically as follows M wireless frame length, and the default step-out sliding window of acquiring unit 703 is specifically as follows N wireless frame length.Wherein, M, N are greater than 1 integer, and M<N.

Further, another example of radio link quality monitoring device embodiment according to the present invention and unrestricted, if the present mode of WTRU is non-DRX pattern, with radio link quality monitoring method shown in Fig. 7 of the present invention, embodiment is corresponding, the radio link quality monitoring device of the various embodiments described above can also comprise the second recognition unit 709, for the recognition result according to the first recognition unit 707, if present mode is non-DRX pattern, identify this radio link quality monitoring device for WTRU whether be configured to the SPS pattern.Correspondingly, decision unit 705 specifically can, according to the recognition result of the second recognition unit 709, if WTRU is not configured to the SPS pattern, be carried out according to Counter _out, Counter _InWith the BLER of PDCCH, judge down wireless link synchronously or the operation of step-out.

If WTRU is configured to the SPS pattern, decision unit 705 specifically can compare subelement 801 identification Counter by 805 indications of judgement subelement _sumWhether reach default radio frames corresponding to synchronous slide window; According to the recognition result that compares subelement 801, in response to Counter _sumReach default radio frames corresponding to synchronous slide window, whether indication relatively subelement 801 identification SPS is greater than default synchronous slide window dispatching cycle;

According to the recognition result that compares subelement 801, if SPS is greater than default synchronous slide window dispatching cycle, indication is subelement 801 identification Counter relatively _InWhether reach default synchronous counting threshold value.And according to the recognition result that compares subelement 801, if Counter _InReach default synchronous counting threshold value, judge that down wireless link is synchronous;

Otherwise, Counter _InDo not reach default synchronous counting threshold value, specifically can compare subelement 801 identification Counter by 805 indications of judgement subelement _sumWhether reach default radio frames corresponding to step-out sliding window.And according to the recognition result that compares subelement 801, in response to Counter _sumReach default radio frames corresponding to step-out sliding window, whether indication relatively subelement 801 identification SPS is greater than default step-out sliding window dispatching cycle.According to the recognition result that compares subelement 801, if SPS is greater than default step-out sliding window dispatching cycle, indication is subelement 801 identification Counter relatively _outWhether reach default step-out counting threshold value, and according to the recognition result that compares subelement 801, if Counter _outReach default step-out counting threshold value, judge the down wireless link step-out;

Otherwise, if SPS is less than or equal to default step-out sliding window dispatching cycle, indication is subelement 801 identification Counter relatively _outWhether reach default step-out counting threshold value, and in default step-out sliding window, whether the BLER of PDCCH is greater than the BLER threshold value of presetting step-out PDCCH; According to the recognition result that compares subelement 801, if Counter _outReach default step-out counting threshold value, and in default step-out sliding window, the BLER of PDCCH is greater than the BLER threshold value of presetting step-out PDCCH, judges described down wireless link step-out;

Otherwise, if SPS is less than or equal to default synchronous slide window dispatching cycle, start to carry out the operation that indication acquiring unit 703 obtains the BLER of PDCCH in default synchronous slide window.

The structural representation that Figure 10 is an embodiment of WTRU of the present invention.The WTRU of this embodiment can be used in the present invention the flow process of above-mentioned each radio link quality monitoring method embodiment.As shown in figure 10, it comprises physical layer element 1 and higher level unit 2.

Wherein, physical layer element 1 is for by down wireless link, receiving radio frame signal, and obtains the cycle according to default, obtains the SNR of pilot signal in the radio frame signal received and the BLER of Traffic Channel; According to the BLER of the SNR obtained, Traffic Channel, and in conjunction with the BLER of PDCCH, judge the synchronous or step-out of down wireless link, and 2 send wireless link synchronization indication or radio link failure indication to the higher level unit.According to a concrete example of the present invention, physical layer element 1 specifically can adopt the structure of the embodiment of radio link quality monitoring device shown in Fig. 8 or Fig. 9 to realize.The instantiation that physical layer element 1 adopts one of them example structure shown in Fig. 9 only exemplarily is shown in Figure 10, the embodiment that adopts other example structure of the present invention to realize for physical layer element 1, those skilled in the art can the content based on the above embodiment of the present invention record realize, repeat no more.

Wireless link synchronization indication or radio link failure indication that higher level unit 2 sends for receiving physical layer element 1.Higher level unit 2 can, when the number that receives the radio link failure indication that receives physical layer element 1 transmission reaches preset number, can start the T310 timer and carry out timing according to default duration.The T310 timer expiry, judge RLF, that is: radio link failure.In order to reduce the interference of other UE and to conserve battery charge, transmitter can be closed in higher level unit 2 after the T310 timer expiry in 40ms, stops the ascending power emission.According to a concrete example of the present invention, higher level unit 2 can be specifically that medium access is controlled (Media Access Control, hereinafter to be referred as: MAC) unit, Radio Resource are controlled (Radio Resources Control, hereinafter to be referred as: RRC) unit or wireless link control that (Radio Link Control, hereinafter to be referred as the RLC) entity such as unit.

The WTRU provided based on the above embodiment of the present invention, be not limited to the BLER of statistics PDCCH, after receiving radio frame signal by down wireless link, can obtain the cycle according to default, obtain the SNR of pilot signal in this radio frame signal received and/or the BLER of Traffic Channel, concrete SNR according to obtaining and/or the BLER of Traffic Channel, and in conjunction with the BLER of PDCCH, judge the synchronous or step-out of described down wireless link.

In one embodiment of the invention, also provide a kind of UE, the WTRU provided comprising the above-mentioned arbitrary embodiment of the present invention.

The UE provided based on the above embodiment of the present invention, the WTRU that comprises above-described embodiment, be not limited to the BLER of statistics PDCCH, after receiving radio frame signal by down wireless link, can obtain the cycle according to default, obtain the SNR of pilot signal in this radio frame signal received and/or the BLER of Traffic Channel, the SNR that concrete basis is obtained and/or the BLER of Traffic Channel, and, in conjunction with the BLER of PDCCH, judge the synchronous or step-out of described down wireless link.

One of ordinary skill in the art will appreciate that: the Component units in the various embodiments described above radio link quality monitoring device of the present invention, WTRU and UE can be realized by software, also can realize by hardware.And, the Component units of the various embodiments described above radio link quality monitoring device of the present invention, WTRU and UE might not be realize the embodiment of the present invention must or only for.In addition, the Component units of radio link quality monitoring device can also be distributed in other Component units beyond WTRU in UE according to the actual requirements, and the setting position of each Component units also can be adjusted according to the actual requirements.In the Component units of device, can merge into a unit realization by a plurality of Component units, also can be split as a plurality of subelements realizations by a Component units.In addition, the annexation between the Component units of device, only mean to concern example based on an information flow direction of the present invention, is not restricted to the physical connection relation, and also not necessarily realize the embodiment of the present invention must or only for.

In this specification, each embodiment all adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment that between each embodiment, same or analogous part cross-references gets final product.For device, apparatus embodiments, because it is substantially corresponding with embodiment of the method, so description is fairly simple, relevant part gets final product referring to the part explanation of embodiment of the method.

One of ordinary skill in the art will appreciate that: realize that the hardware that all or part of step of said method embodiment can be relevant by program command completes, aforesaid program can be stored in a computer read/write memory medium, this program, when carrying out, is carried out the step that comprises said method embodiment; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CDs.

The embodiment of the present invention is according to the SNR obtained and/or the BLER of Traffic Channel, and in conjunction with the BLER of PDCCH, judge the synchronous or step-out of down wireless link, can the Dynamic Acquisition radio link quality, and considered the impact of the variation of the variation of wireless environment and link circuit self-adapting on radio link quality, avoid only relying on the BLER of PDCCH to adjudicate erroneous judgement and the lower problem of decision reliability that radio link quality may occur, improved accuracy and the reliability of radio link quality monitoring;

The counter that synchronous regime, desynchronizing state are set carries out the radio link quality monitoring, has further improved accuracy and the reliability of radio link quality monitoring;

When SPS is greater than default synchronous slide window or default step-out sliding window dispatching cycle, the embodiment of the present invention is not added up the BLER of PDCCH in corresponding sliding window, judge wireless link synchronization or step-out according to the BLER of SNR and/or Traffic Channel, thus the monitoring of radio link quality while having realized SPS is greater than to default synchronous slide window or default step-out sliding window dispatching cycle.

Description of the invention provides for example with for the purpose of describing, and is not exhaustively or limit the invention to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is for better explanation principle of the present invention and practical application, thereby and makes those of ordinary skill in the art can understand the various embodiment with various modifications that the present invention's design is suitable for special-purpose.

Claims

1. a radio link quality monitoring method, is characterized in that, comprising:

2. method according to claim 1, is characterized in that, described Traffic Channel comprises Physical Downlink Shared Channel.

3. method according to claim 1, is characterized in that, obtains the signal to noise ratio of pilot signal in radio frame signal and comprise:

Obtain available signal power value and noise signal performance number in radio frame signal;

Obtain the default mean value that obtains the ratio of interior available signal power value of cycle and noise signal performance number, obtain the default signal to noise ratio of obtaining pilot signal in interior radio frame signal of cycle.

4. method according to claim 1, is characterized in that, the Block Error Rate that obtains business comprises:

Obtain the business data transmission piece number in the Physical Downlink Shared Channel of presetting CRC mistake in the cycle of obtaining, business data transmission piece number and the default ratio that obtains business data transmission piece number total in the Traffic Channel received in the cycle by described CRC mistake, obtain the default Block Error Rate that obtains Traffic Channel in the cycle.

5. method according to claim 1, is characterized in that, according to the signal to noise ratio of obtaining, in conjunction with the Block Error Rate of Physical Downlink Control Channel, judges that the synchronous or step-out of described down wireless link comprises:

The signal to noise ratio relatively got and default relation of synchronizeing the signal-noise ratio threshold value;

If the signal to noise ratio got is more than or equal to default synchronous signal-noise ratio threshold value, respectively by the counter of the counter of synchronous regime and all states cumulative 1, wherein, the counter of described all states equals the counter of desynchronizing state, the counter of synchronous regime and the counter sum of intermediateness, described intermediateness is between desynchronizing state and synchronous regime, and the counter of described desynchronizing state is zero at the initial value of each desynchronizing state in assessment cycle;

If the signal to noise ratio got is more than or equal to default step-out signal-noise ratio threshold value, respectively by the counter of the counter of desynchronizing state and all states cumulative 1;

Otherwise, if the signal to noise ratio got is more than or equal to default step-out signal-noise ratio threshold value and is less than default synchronous signal-noise ratio threshold value, respectively by the counter of the counter of intermediateness and all states cumulative 1;

According to the counter of desynchronizing state, the counter of synchronous regime and the Block Error Rate of Physical Downlink Control Channel, judge described down wireless link synchronously or step-out.

6. method according to claim 1, is characterized in that, according to the Block Error Rate of the Traffic Channel of obtaining, in conjunction with the Block Error Rate of Physical Downlink Control Channel, judges that the synchronous or step-out of described down wireless link comprises:

The relation of the Block Error Rate threshold value of the Block Error Rate of the Traffic Channel relatively got and default Traffic Channel;

If the Block Error Rate of the Traffic Channel got is less than the Block Error Rate threshold value of default Traffic Channel, respectively by the counter of the counter of synchronous regime and all states cumulative 1, wherein, the counter of described all states equals the counter of desynchronizing state, the counter of synchronous regime and the counter sum of intermediateness, described intermediateness is between desynchronizing state and synchronous regime, and the counter of described desynchronizing state is zero at the initial value of each desynchronizing state in assessment cycle;

If the Block Error Rate of the Traffic Channel got is more than or equal to the Block Error Rate threshold value of default Traffic Channel, respectively by the counter of the counter of desynchronizing state and all states cumulative 1;

7. method according to claim 1, is characterized in that, according to the Block Error Rate of the signal to noise ratio of obtaining and Traffic Channel, and in conjunction with the Block Error Rate of Physical Downlink Control Channel, judges that the synchronous or step-out of described down wireless link comprises:

The signal to noise ratio relatively got and default relation of synchronizeing signal-noise ratio threshold value, default step-out signal-noise ratio threshold value, and the relation of the Block Error Rate threshold value of the Block Error Rate of the Traffic Channel got and default Traffic Channel;

If the signal to noise ratio got is more than or equal to the Block Error Rate threshold value that the Block Error Rate of the Traffic Channel of presetting synchronous signal-noise ratio threshold value or getting is less than default Traffic Channel, respectively by the counter of the counter of synchronous regime and all states cumulative 1, wherein, the counter of described all states equals the counter of desynchronizing state, the counter of synchronous regime and the counter sum of intermediateness, described intermediateness is between desynchronizing state and synchronous regime, and the counter of described desynchronizing state is zero at the initial value of each desynchronizing state in assessment cycle;

If the signal to noise ratio got is more than or equal to the Block Error Rate threshold value that the Block Error Rate of the Traffic Channel of presetting step-out signal-noise ratio threshold value and getting is more than or equal to default Traffic Channel, respectively by the counter of the counter of desynchronizing state and all states cumulative 1;

8. according to claim 5,6 or 7 described methods, it is characterized in that, according to the Block Error Rate of Physical Downlink Control Channel in the counter of the counter of desynchronizing state, synchronous regime and default sliding window, judge that the synchronous or step-out of described down wireless link comprises:

Whether the counter of identifying all states reaches default radio frames corresponding to synchronous slide window;

Counter in response to all states reaches default radio frames corresponding to synchronous slide window, obtains the Block Error Rate of Physical Downlink Control Channel in default synchronous slide window;

Whether the counter of identification synchronous regime reaches default synchronous counting threshold value, and in default synchronous slide window, whether the Block Error Rate of Physical Downlink Control Channel is greater than the Block Error Rate threshold value of presetting the Simultaneous Physical down control channel;

If the counter of synchronous regime reaches default synchronous counting threshold value, or in default synchronous slide window, the Block Error Rate of Physical Downlink Control Channel is not more than the Block Error Rate threshold value of presetting the Simultaneous Physical down control channel, judges that described down wireless link is synchronous;

Otherwise, if the counter of synchronous regime does not reach default synchronous counting threshold value, and in default synchronous slide window, the Block Error Rate of Physical Downlink Control Channel is greater than the Block Error Rate threshold value of default Simultaneous Physical down control channel, whether the counter of identifying all states reaches default radio frames corresponding to step-out sliding window;

Counter in response to all states reaches default radio frames corresponding to step-out sliding window, whether the counter of identification desynchronizing state reaches default step-out counting threshold value, and in default step-out sliding window, whether the Block Error Rate of Physical Downlink Control Channel is greater than the Block Error Rate threshold value of presetting the step-out Physical Downlink Control Channel;

If the counter of desynchronizing state reaches default step-out counting threshold value, and in default step-out sliding window, the Block Error Rate of Physical Downlink Control Channel is greater than the Block Error Rate threshold value of presetting the step-out Physical Downlink Control Channel, judges described down wireless link step-out.

9. method according to claim 8, is characterized in that, the Block Error Rate that obtains Physical Downlink Control Channel in default sliding window comprises:

Obtain the business data transmission piece number that detects wrong Physical Downlink Control Channel in default sliding window, detect the ratio of business data transmission piece number total in wrong Physical Downlink Control Channel by detection in this default sliding window in the business data transmission piece number of wrong Physical Downlink Control Channel and default sliding window, obtain the Block Error Rate of Physical Downlink Control Channel in default sliding window.

10. method according to claim 9, is characterized in that, also comprises whether the present mode of identification wireless transmission receiving element is the operation of discontinuous reception modes.

11. method according to claim 10, is characterized in that, if present mode is discontinuous reception modes, the duration of unlatching that the described default cycle of obtaining is the wireless transmission receiving element;

Described default synchronous slide window is default synchronous assessment cycle, and described default step-out sliding window is default step-out assessment cycle, and wherein, default synchronous assessment cycle is less than default step-out assessment cycle.

12. method according to claim 10, is characterized in that, if present mode is not discontinuous receiving mode, the described default cycle of obtaining is a radio frames;

Described default synchronous slide window is M wireless frame length, and described default step-out sliding window is N wireless frame length, and M, N are greater than 1 integer, and M<N.

13. method according to claim 12, is characterized in that, the value that the value of M is 10, N is 20.

14. method according to claim 12, is characterized in that, if present mode is not discontinuous receiving mode, also comprises:

Whether identification wireless transmission receiving element is configured to the semi-persistent scheduling pattern;

If the wireless transmission receiving element is not configured to the semi-persistent scheduling pattern, carry out the counter of the described counter according to desynchronizing state, synchronous regime and the Block Error Rate of Physical Downlink Control Channel, judge described down wireless link synchronously or the operation of step-out;

If the wireless transmission receiving element is configured to the semi-persistent scheduling pattern, whether the counter of identifying all states reaches default radio frames corresponding to synchronous slide window;

Reach default radio frames corresponding to synchronous slide window in response to the counter of all states, whether the identification semi-persistent scheduling is greater than default synchronous slide window dispatching cycle;

If semi-persistent scheduling is greater than default synchronous slide window dispatching cycle, whether the counter of identification synchronous regime reaches default synchronous counting threshold value;

If the counter of synchronous regime reaches default synchronous counting threshold value, judge that described down wireless link is synchronous;

Otherwise, if the counter of synchronous regime does not reach default synchronous counting threshold value, whether the counter of identifying all states reaches default radio frames corresponding to step-out sliding window; Reach default radio frames corresponding to step-out sliding window in response to the counter of all states, whether the identification semi-persistent scheduling is greater than default step-out sliding window dispatching cycle;

If semi-persistent scheduling is greater than default step-out sliding window dispatching cycle, whether the counter of identification desynchronizing state reaches default step-out counting threshold value; If the counter of desynchronizing state reaches default step-out counting threshold value, judge described down wireless link step-out; Otherwise, if semi-persistent scheduling is less than or equal to default step-out sliding window dispatching cycle, whether the counter of identification desynchronizing state reaches default step-out counting threshold value, and in default step-out sliding window, whether the Block Error Rate of Physical Downlink Control Channel is greater than the Block Error Rate threshold value of presetting the step-out Physical Downlink Control Channel; If the counter of desynchronizing state reaches default step-out counting threshold value, and in default step-out sliding window, the Block Error Rate of Physical Downlink Control Channel is greater than the Block Error Rate threshold value of presetting the step-out Physical Downlink Control Channel, judges described down wireless link step-out;

Otherwise, if semi-persistent scheduling is less than or equal to default synchronous slide window dispatching cycle, carry out described operation of obtaining the Block Error Rate of Physical Downlink Control Channel in default synchronous slide window.

15. method according to claim 10, is characterized in that, the Block Error Rate threshold value of described default Physical Downlink Shared Channel is 1; And/or

The Block Error Rate threshold value of described default Simultaneous Physical down control channel is 10%; And/or

Described default synchronous counting threshold value is 1; And/or

The Block Error Rate threshold value of described default Simultaneous Physical down control channel is 2%; And/or

80% of the counter that described default step-out counting threshold value is all states; And/or

The Block Error Rate threshold value of described default step-out Physical Downlink Control Channel is 10%.

16. a radio link quality monitoring device, is characterized in that, comprising:

Receiving element, for receiving radio frame signal by down wireless link;

17. device according to claim 16, is characterized in that, described Traffic Channel comprises Physical Downlink Shared Channel.

18. device according to claim 16, is characterized in that, described decision unit comprises:

Compare subelement, the signal to noise ratio got for more described acquiring unit is preset synchronous signal-noise ratio threshold value, is preset the relation that step-out signal-noise ratio threshold value is preset step-out signal-noise ratio threshold value with the default signal-noise ratio threshold value of synchronizeing;

Count sub-element, for the comparative result according to comparing subelement, if the signal to noise ratio got is more than or equal to default synchronous signal-noise ratio threshold value, respectively by the counter of all states of counter of the counter of the counter synchronisation state of synchronous regime and all states cumulative 1, wherein, the counter of described all states equals the counter of desynchronizing state, the counter of synchronous regime, and the counter sum of intermediateness, described intermediateness is between desynchronizing state and synchronous regime, the counter of described desynchronizing state is zero at the initial value of each desynchronizing state in assessment cycle, if the signal to noise ratio got is more than or equal to default step-out signal-noise ratio threshold value, respectively by the counter of the counter of desynchronizing state and all states cumulative 1, otherwise, if the signal to noise ratio got is more than or equal to default step-out signal-noise ratio threshold value and is less than default synchronous signal-noise ratio threshold value, respectively by the counter of the counter of intermediateness and all states cumulative 1,

The judgement subelement, for counter, the counter of synchronous regime and the Block Error Rate of Physical Downlink Control Channel of the desynchronizing state that counts to get according to count sub-element, judge described down wireless link synchronously or step-out.

19. device according to claim 16, is characterized in that, described decision unit comprises:

Compare subelement, the relation of the Block Error Rate threshold value of the Block Error Rate of the Traffic Channel got for more described acquiring unit and default Traffic Channel;

Count sub-element, for the comparative result according to comparing subelement, if the Block Error Rate of the Traffic Channel got is less than the Block Error Rate threshold value of default Traffic Channel, respectively by the counter of all states of counter of the counter of the counter synchronisation state of synchronous regime and all states cumulative 1, wherein, the counter of described all states equals the counter of desynchronizing state, the counter of synchronous regime, and the counter sum of intermediateness, described intermediateness is between desynchronizing state and synchronous regime, the counter of described desynchronizing state is zero at the initial value of each desynchronizing state in assessment cycle, if the Block Error Rate of the Traffic Channel got is more than or equal to the Block Error Rate threshold value of default Traffic Channel, respectively by the counter of the counter of desynchronizing state and all states cumulative 1,

20. device according to claim 16, is characterized in that, described decision unit comprises:

Compare subelement, the signal to noise ratio got for more described acquiring unit is preset synchronous signal-noise ratio threshold value, is preset the relation that step-out signal-noise ratio threshold value is preset step-out signal-noise ratio threshold value with the default signal-noise ratio threshold value of synchronizeing, and the relation of the Block Error Rate threshold value of the Block Error Rate of the Traffic Channel got and default Traffic Channel;

Count sub-element, for the comparative result according to comparing subelement, if the signal to noise ratio got is more than or equal to the Block Error Rate threshold value that the Block Error Rate of the Traffic Channel of presetting synchronous signal-noise ratio threshold value or getting is less than default Traffic Channel, respectively by the counter of all states of counter of the counter of the counter synchronisation state of synchronous regime and all states cumulative 1, wherein, the counter of described all states equals the counter of desynchronizing state, the counter of synchronous regime, and the counter sum of intermediateness, described intermediateness is between desynchronizing state and synchronous regime, the counter of described desynchronizing state is zero at the initial value of each desynchronizing state in assessment cycle, if the signal to noise ratio got is more than or equal to the Block Error Rate threshold value that the Block Error Rate of the Traffic Channel of presetting step-out signal-noise ratio threshold value and getting is more than or equal to default Traffic Channel, respectively by the counter of the counter of desynchronizing state and all states cumulative 1, otherwise, if the signal to noise ratio got is more than or equal to default step-out signal-noise ratio threshold value and is less than default synchronous signal-noise ratio threshold value, respectively by the counter of the counter of intermediateness and all states cumulative 1,

21. according to claim 18,19 or 20 described devices, it is characterized in that, whether the counter of all states that described judgement subelement specifically indicates comparison subelement identification count sub-element to count to get reaches default radio frames corresponding to synchronous slide window; According to the recognition result of subelement relatively, reach default radio frames corresponding to step-out sliding window in response to the counter of all states, indicate described acquiring unit to obtain the Block Error Rate of Physical Downlink Control Channel in default synchronous slide window; And

Whether the counter of the indication synchronous regime that relatively subelement identification count sub-element counts to get reaches default synchronous counting threshold value, and whether the Block Error Rate of the interior Physical Downlink Control Channel of default synchronous slide window is greater than the Block Error Rate threshold value of default Simultaneous Physical down control channel; And according to the recognition result that compares subelement, if the counter of synchronous regime reaches default synchronous counting threshold value, perhaps in default synchronous slide window, the Block Error Rate of Physical Downlink Control Channel is not more than the Block Error Rate threshold value of presetting the Simultaneous Physical down control channel, judges that described down wireless link is synchronous;

Otherwise, if the counter of synchronous regime does not reach default synchronous counting threshold value, and the Block Error Rate of Physical Downlink Control Channel is greater than the Block Error Rate threshold value of default Simultaneous Physical down control channel in default synchronous slide window, whether the indication counter that relatively subelement is identified all states reaches default radio frames corresponding to step-out sliding window; And according to the recognition result that compares subelement, counter in response to all states reaches default radio frames corresponding to step-out sliding window, whether the counter that subelement identification desynchronizing state is compared in indication reaches default step-out counting threshold value, and in default step-out sliding window, whether the Block Error Rate of Physical Downlink Control Channel is greater than the Block Error Rate threshold value of presetting the step-out Physical Downlink Control Channel; And according to the recognition result that compares subelement, if the counter of desynchronizing state reaches default step-out counting threshold value, and in default step-out sliding window, the Block Error Rate of Physical Downlink Control Channel is greater than the Block Error Rate threshold value of default step-out Physical Downlink Control Channel, judges described down wireless link step-out.

22. device according to claim 21, is characterized in that, also comprises:

Whether the first recognition unit is discontinuous reception modes for the present mode of identifying the wireless transmission receiving element.

23. device according to claim 22, is characterized in that, if present mode is discontinuous reception modes, the duration of unlatching that the described default cycle of obtaining is the wireless transmission receiving element;

Described default synchronous slide window is default synchronous assessment cycle of default synchronous assessment cycle, and described default step-out sliding window is default step-out default step-out of assessment cycle assessment cycle, wherein, and step-out assessment cycle default synchronous assessment cycle<default.

24. device according to claim 22, is characterized in that, if present mode is not discontinuous receiving mode, the described default cycle of obtaining is a radio frames;

25. device according to claim 24, is characterized in that, also comprises:

The second recognition unit, for the recognition result according to the first recognition unit, if present mode is not discontinuous receiving mode, whether identification wireless transmission receiving element is configured to the semi-persistent scheduling pattern;

Described decision unit is specifically according to the recognition result of described the second recognition unit, if the wireless transmission receiving element is not configured to the semi-persistent scheduling pattern, carry out the counter of the described counter according to desynchronizing state, synchronous regime and the Block Error Rate of Physical Downlink Control Channel, judge described down wireless link synchronously or the operation of step-out; If the wireless transmission receiving element is configured to the semi-persistent scheduling pattern, whether the counter that described judgement subelement specifically indicates the comparison subelement to identify all states reaches default radio frames corresponding to synchronous slide window; According to the recognition result of subelement relatively, reach default radio frames corresponding to synchronous slide window in response to the counter of all states, whether indication relatively subelement identification semi-persistent scheduling is greater than default synchronous slide window dispatching cycle; And, according to the recognition result that compares subelement, if semi-persistent scheduling is greater than default synchronous slide window dispatching cycle, indicates the counter that compares subelement identification synchronous regime whether to reach and preset the synchronous counting threshold value; And, according to the recognition result that compares subelement, if the counter of synchronous regime reaches default synchronous counting threshold value, judge that described down wireless link is synchronous;

Otherwise the counter of synchronous regime does not reach default synchronous counting threshold value, whether the counter that indication comparison subelement is identified all states reaches default radio frames corresponding to step-out sliding window; And, according to the recognition result of subelement relatively, in response to the counter of all states, reach default radio frames corresponding to step-out sliding window, whether indication relatively subelement identification semi-persistent scheduling is greater than default step-out sliding window dispatching cycle; According to the recognition result that compares subelement, if semi-persistent scheduling is greater than default step-out sliding window dispatching cycle, indicates the counter that compares subelement identification desynchronizing state whether to reach and preset step-out counting threshold value; According to the recognition result that compares subelement, if the counter of desynchronizing state reaches default step-out counting threshold value, judge described down wireless link step-out, otherwise, if semi-persistent scheduling is less than or equal to default step-out sliding window dispatching cycle, whether the counter that subelement identification desynchronizing state is compared in indication reaches default step-out counting threshold value, and in default step-out sliding window, whether the Block Error Rate of Physical Downlink Control Channel is greater than the Block Error Rate threshold value of presetting the step-out Physical Downlink Control Channel; According to the recognition result that compares subelement, if the counter of desynchronizing state reaches default step-out counting threshold value, and in default step-out sliding window, the Block Error Rate of Physical Downlink Control Channel is greater than the Block Error Rate threshold value of default step-out Physical Downlink Control Channel, judges described down wireless link step-out; Otherwise, if semi-persistent scheduling is less than or equal to default synchronous slide window dispatching cycle, start to carry out the operation that the described acquiring unit of described indication obtains the Block Error Rate of Physical Downlink Control Channel in default synchronous slide window.

26. a wireless transmission receiving element, is characterized in that, comprises physical layer element and higher level unit;

27. wireless transmission receiving element according to claim 26, is characterized in that, described physical layer element is specially the described radio link quality monitoring device of claim 16 to 25 any one.

28. according to the described wireless transmission receiving element of claim 26 or 27, it is characterized in that, described higher level unit comprises medium access control unit, Radio Resource control unit or wireless link control unit.

29. a subscriber equipment, is characterized in that, comprises the described wireless transmission receiving element of claim 26 to 28 any one.