CN102740316B - The detection method of DTX state and device - Google Patents
The detection method of DTX state and device Download PDFInfo
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- CN102740316B CN102740316B CN201110088544.4A CN201110088544A CN102740316B CN 102740316 B CN102740316 B CN 102740316B CN 201110088544 A CN201110088544 A CN 201110088544A CN 102740316 B CN102740316 B CN 102740316B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides a kind of detection method and device of up DTX state, in the above-mentioned methods, receive the data message coming from current area uplink user equipment; Adopt data message to calculate and obtain confidence value corresponding to data message, wherein, confidence value is for reflecting the correctness of receiving terminal to data message decoding; Confidence value and the DTX decision threshold preset are compared; According to comparative result, determine whether uplink user equipment is in DTX state.According to technical scheme provided by the invention, effectively can detect whether uplink user equipment is in DTX state, and realize simple to operation.
Description
Technical field
The present invention relates to the communications field, in particular to the detection method of the up discontinuous transmission of one (DiscontinuousTransmission, referred to as DTX) state.
Background technology
Along with the continuous appearance of high-speed data service, asymmetric data business obtains and applies more and more widely in Time division multiple access (TimeDivision-SynchronousCodeDivisionMultipleAccess, referred to as TD-SCDMA) network.Because the data volume of non-symmetrical service is mainly reflected in one way link, and the data volume of other direction channel greatly reduces comparatively speaking, and therefore, the physical resource taken also can reduce as much as possible.With regard to current Packet data service, upstream data amount considerably less (only having some signalings), and downlink data amount very large time, upward signal is still in lasting transmission, even if when the most of the time does not have transfer of data, subscriber equipment (UserEquipment, referred to as UE) will send SpecialBurst (SB) continuously to maintain the synchronous of physical layer link.
Wherein, the definition of above-mentioned SB is: for TD-SCDMA system, and in 10ms, transmission data field is 0x5555, TFCI is 0, carries the data of TPC and SS command word simultaneously.
Given this, can adopt and a kind ofly be called that the technology of discontinuous transmission reduces the delivery flow rate without data segment, thus reach the object reducing transmission power of mobile station.It closes transmitter countless automatically according to during transmission, and just compartment of terrain sends minute quantity data and maintains link, thus reduces system interference, saves the power consumption of travelling carriage, increases stand-by time.In gsm system, discontinuous transmission technology only reduces without voice transfer for during voice communication, and focuses on the generation of Voice activity detector and comfort noise.In TD-SCDMA system, except traditional discontinuous transmission for voice signal, also introduce discontinuous transmitting (DTX) technology for data service.
DTX is after wireless link, and when not having data flow on the CCTrCH channel of correspondence, the one of physical layer process is used.In TD-SCDMA system, DTX is applicable to descending and up link simultaneously, is to be realized by the encoding and decoding speech module in mobile phone or base station.When module detect high level have a data flow time, just launch by common pattern-coding.Detect without data flow (there is no data in CCTrCH channel) once module, then periodically send SB and safeguard physical layer link, reduce the power consumption of travelling carriage and reduce network interferences.
For ULDTX, mobile phone is not when up link has data block to send, physical layer periodically (instead of continuous) sends SB to maintain the synchronous of TD-SCDMA system, and therefore the power consumption of mobile phone is almost half when not adopting DTX technology, greatly can reduce interference.Due to the introducing of DTX technology, whether terminal transmits DTX information just to require base station end to detect, makes the detection of the physical layer signal of network side and Processing Algorithm become more complicated.
In correlation technique, along with the introducing of DTX technology, because discontinuous transmitting makes the detection of the physical layer signal of network side and Processing Algorithm become more complicated, especially for up channel.Therefore, also lack a kind of up DTX detection scheme newly at present, that effectively can detect that uplink user equipment launches is valid data or DTX.
Summary of the invention
A kind ofly effectively can detect whether uplink user equipment is in the problems such as the scheme of DTX state, the invention provides a kind of detection method and device of DTX state for also lacking in correlation technique, to solve the problem one of at least.
According to an aspect of the present invention, a kind of detection method of DTX state is provided.
Detection method according to DTX state of the present invention comprises: receive the data message coming from current area uplink user equipment; Adopt data message to calculate and obtain confidence value corresponding to data message, wherein, confidence value is for reflecting the correctness of receiving terminal to data message decoding; Confidence value and the DTX decision threshold preset are compared; According to comparative result, determine whether uplink user equipment is in DTX state.
According to an aspect of the present invention, a kind of checkout gear of DTX state is provided.
Checkout gear according to DTX state of the present invention comprises: receiver module, for receiving the data message coming from current area uplink user equipment; Calculate acquisition module, calculate for adopting data message and obtain confidence value corresponding to data message, wherein, confidence value is for reflecting the correctness of receiving terminal to data message decoding; Comparison module, for comparing confidence value and the DTX decision threshold preset; Determination module, for according to comparative result, determines whether uplink user equipment is in DTX state.
By the present invention, adopt the data message that receives to calculate confidence value, then according to the comparative approach of confidence value and DTX decision threshold, determine whether uplink user equipment is in DTX state.Solve in correlation technique also to lack and a kind ofly effectively can detect whether uplink user equipment is in the problems such as the scheme of DTX state, and then effectively can detect whether uplink user equipment is in DTX state, and realize simple to operation.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of the detection method of DTX state according to the embodiment of the present invention;
Fig. 2 is the flow chart of the detection method of DTX state according to the preferred embodiment of the invention;
Fig. 3 is the flow chart of the detection method of DTX state according to example of the present invention;
Fig. 4 is the schematic diagram of the TD-SCDMA system data slot form according to example of the present invention;
Fig. 5 is the structured flowchart of the checkout gear of DTX state according to the embodiment of the present invention;
Fig. 6 is the structured flowchart of the checkout gear of DTX state according to the preferred embodiment of the invention.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
Fig. 1 is the flow chart of the detection method of DTX state according to the embodiment of the present invention.As shown in Figure 1, the detection method of this DTX state comprises following process:
Step S102: receive the data message coming from current area uplink user equipment;
Step S104: adopt data message to calculate and obtain confidence value corresponding to data message, wherein, confidence value is for reflecting the correctness of receiving terminal to data message decoding;
Step S106: confidence value and the DTX decision threshold preset are compared;
Step S108: according to comparative result, determines whether uplink user equipment is in DTX state.
Adopt said method, effectively can detect whether uplink user equipment is in DTX state, and realize simple to operation.
Preferably, above-mentioned steps S108 may further include following process:
(1) when confidence value is less than or equal to DTX decision threshold, determine that uplink user equipment is in DTX state.Preferably, in order to save system space, the soft bit information after demodulation can be abandoned;
(2) when confidence value is greater than DTX decision threshold, determine that uplink user equipment is in data transmission state.
Preferably, when the transmission channel of data message is HS-SICH or E-UCCH, in step S104, the confidence value adopting data message to calculate acquisition data message corresponding may further include following process:
(1) demodulation operation is carried out to the data message received, obtain the soft bit information after demodulation;
(2) corresponding data is taken out to soft bit information and carry out Reed-Muller decoding generation maximum likelihood value and time maximum likelihood value;
(3) adopt above-mentioned maximum likelihood value and time maximum likelihood value to calculate and obtain confidence value.
Wherein, confidence value Z can be obtained by following formulae discovery:
Z=[abs (maximum likelihood value)-abs (secondary maximum likelihood value)]/abs (maximum likelihood value)
Preferably, to different transmission channels, DTX state decision threshold Th value is different, and namely DTX state decision threshold Th value sets according to transmission channel.
It should be noted that, the detection method of above-mentioned DTX state not only can be applied to TD-SCDMA, can also be applicable to the system that other can calculate confidence value.
Below for TD-SCDMA, composition graphs 2 describes above-mentioned preferred implementation.
Fig. 2 is the flow chart of the detection method of DTX state according to the preferred embodiment of the invention.As shown in Figure 2, in TD-SCDMA system, the detection method of this DTX state may further include following process:
Step S202: network side, according to predetermined time slot format, receives the data message of this cell uplink user;
Step S204: after demodulation operation is carried out to the data message received, the equipment of base station end calculates the confidence value Z of this cell uplink user data:
According to the data message received, calculate the confidence value Z of the data message received, for HS-SICH or E-UCCH transmission channel, the maximum likelihood value that the calculating of confidence value Z can be produced by the Reed-Muller decoding in data block (soft bit information after demodulation) obtains with the ratio of time maximum likelihood value, and specific formula for calculation is as follows:
Z=[abs (maximum likelihood value)-abs (secondary maximum likelihood value)]/abs (maximum likelihood value);
Step S206: this confidence value Z and DTX decision threshold Th is compared:
In specific implementation process, to different transmission channels, DTX state decision threshold Th value is different, and namely DTX state decision threshold Th value sets according to transmission channel.
Step S208: if confidence value Z is greater than DTX decision threshold Th, then user is in data transmission state;
If confidence value Z is greater than DTX decision threshold Th, then shows that the correctness of receiving terminal to data message decoding is higher, illustrate that now uplink user is in data transmission state.
Step S210: if confidence value Z is less than or equal to DTX decision threshold Th, then judge now up be in DTX state under, abandon the soft bit information after demodulation.
If confidence value Z is less than or equal to DTX decision threshold Th, then show that the correctness of receiving terminal to data message decoding is lower, illustrate now up be in DTX state under, there is no the transmitting of data message.
Now, the data received can be abandoned by the equipment of base station end, no longer carry out other process.
Below for E-UCCH channel, the example shown in composition graphs 3 further describes above-mentioned preferred implementation.
Fig. 3 is the flow chart of the detection method of DTX state according to example of the present invention.As shown in Figure 3, the detection method of this DTX state mainly comprises following process:
Step S302: network side, according to the time slot format shown in Fig. 4, receives the data message of this cell uplink user, and carries out demodulation to data message;
Step S304: base station end device calculates the confidence value Z of this cell uplink user data:
In specific implementation process, base station end device is according to the data message received, calculate the confidence value Z receiving data message, bite information in E-UCCH transmission channel is through Reed-Muller (32,10) be mapped on E-PUCH after coding, take out corresponding data (the soft Bit data after demodulation) at receiving terminal according to mapping mode and carry out Reed-Muller decoding, decoding to produce maximum likelihood value and time maximum likelihood value, can calculate confidence value Z by formula below:
Z=[abs (maximum likelihood value)-abs (secondary maximum likelihood value)]/abs (maximum likelihood value);
Step S306: this confidence value Z and DTX decision threshold Th is compared:
Wherein, to different transmission channels, DTX state decision threshold Th value is different, and namely DTX state decision threshold Th value sets according to transmission channel, namely in this example according to E-UCCH channel setting DTX state decision threshold.
Step S308: if confidence value Z is greater than DTX decision threshold Th, then user is in data transmission state;
Step S310: if confidence value Z is less than or equal to DTX decision threshold Th, then judge now up be in DTX state under, abandon the soft bit information after demodulation;
Now, base station end needs the data received to abandon, and no longer carries out other process.
Fig. 5 is the structured flowchart of the checkout gear of DTX state according to the embodiment of the present invention.As shown in Figure 5, the checkout gear of this DTX state comprises: receiver module 50, calculating acquisition module 52, comparison module 54 and determination module 56.Below each module is described respectively.
Receiver module 50, for receiving the data message coming from current area uplink user equipment;
Calculate acquisition module 52, calculate for adopting data message and obtain confidence value corresponding to data message, wherein, confidence value is for reflecting the correctness of receiving terminal to data message decoding;
Comparison module 54, for comparing confidence value and the DTX decision threshold preset;
Determination module 56, for according to comparative result, determines whether uplink user equipment is in DTX state.
In said apparatus, calculate the data message that acquisition module 52 pairs of receiver modules 50 receive and calculate confidence value, comparison module 54 is according to the comparative approach of confidence value and DTX decision threshold, and determination module 56 determines whether uplink user equipment is in DTX state.Effectively can detect whether uplink user equipment is in DTX state, and realize simple to operation.
Preferably, as shown in Figure 6, determination module 56 may further include: the first determining unit 560, during for being less than or equal to DTX decision threshold at confidence value, determines that uplink user equipment is in DTX state; Second determining unit 562, during for being greater than DTX decision threshold at confidence value, determines that uplink user equipment is in data transmission state.
Preferably, as shown in Figure 6, said apparatus can also comprise: processing module 58, when the first determining unit determination uplink user equipment is in DTX state, abandons the soft bit information after demodulation.
Preferably, as shown in Figure 6, above-mentioned calculating acquisition module 52 may further include: demodulating unit 520, for carrying out demodulation operation to the data message received, obtains the soft bit information after demodulation; Decoding unit 522, for when the transmission channel of data message is HS-SICH or E-UCCH, takes out corresponding data to soft bit information and carries out Reed-Muller decoding generation maximum likelihood value and time maximum likelihood value; Computing unit 524, obtains confidence value for adopting maximum likelihood value and time maximum likelihood value to calculate.
Preferably, computing unit 524, for obtaining confidence value: Z=[abs (maximum likelihood value)-abs (secondary maximum likelihood value)]/abs (maximum likelihood value) by following formulae discovery
The working method that each module in the checkout gear of above-mentioned DTX state and each unit be combined with each other specifically see the description of Fig. 1 to Fig. 3, can repeat no more herein.
It should be noted that, the detection method of above-mentioned DTX state not only can be applied to TD-SCDMA, and can also be applicable to the system that other can calculate confidence value, therefore range of application is more extensive.
In sum, by above-described embodiment provided by the invention, according to the confidence level of the data message received, effectively can detect whether uplink user is in DTX state, and realize simple to operation, have wide range of applications.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus they storages can be performed by calculation element in the storage device, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. a detection method for up discontinuous transmission DTX state, is characterized in that, comprising:
Receive the data message coming from current area uplink user equipment;
Adopt described data message to calculate and obtain confidence value corresponding to described data message, wherein, described confidence value is for reflecting the correctness of receiving terminal to described data message decoding;
Described confidence value and the DTX decision threshold preset are compared;
According to comparative result, determine whether described uplink user equipment is in DTX state.
2. method according to claim 1, is characterized in that, according to comparative result, determines whether described uplink user equipment is in DTX state and comprises:
When described confidence value is less than or equal to described DTX decision threshold, determine that described uplink user equipment is in DTX state;
When described confidence value is greater than described DTX decision threshold, determine that described uplink user equipment is in data transmission state.
3. method according to claim 2, is characterized in that, when determining that described uplink user equipment is in DTX state, abandoning and carrying out the soft bit information after demodulation operation to described data message.
4. method according to claim 1, is characterized in that, when the transmission channel of described data message is HS-SICH or E-UCCH, the confidence value adopting described data message to calculate the described data message of acquisition corresponding comprises:
Demodulation operation is carried out to the described data message received, obtains the soft bit information after demodulation;
Corresponding data is taken out to described soft bit information and carries out Reed-Muller decoding generation maximum likelihood value and time maximum likelihood value;
Adopt described maximum likelihood value and time maximum likelihood value to calculate and obtain described confidence value.
5. method according to claim 4, is characterized in that, obtains described confidence value Z by following formulae discovery:
Z=[abs (maximum likelihood value)-abs (secondary maximum likelihood value)]/abs (maximum likelihood value).
6. method according to any one of claim 1 to 5, is characterized in that, described DTX decision threshold sets according to transmission channel.
7. a checkout gear for up discontinuous transmission DTX state, is characterized in that, comprising:
Receiver module, for receiving the data message coming from current area uplink user equipment;
Calculate acquisition module, calculate for adopting described data message and obtain confidence value corresponding to described data message, wherein, described confidence value is for reflecting the correctness of receiving terminal to described data message decoding;
Comparison module, for comparing described confidence value and the DTX decision threshold preset;
Determination module, for according to comparative result, determines whether described uplink user equipment is in DTX state.
8. device according to claim 7, is characterized in that, described determination module comprises:
First determining unit, for when described confidence value is less than or equal to described DTX decision threshold, determines that described uplink user equipment is in DTX state;
Second determining unit, for when described confidence value is greater than described DTX decision threshold, determines that described uplink user equipment is in data transmission state.
9. device according to claim 8, is characterized in that, described device also comprises:
Processing module, for when described first determining unit determines that described uplink user equipment is in DTX state, abandons and carries out the soft bit information after demodulation operation to described data message.
10. device according to claim 7, is characterized in that, described calculating acquisition module comprises:
Demodulating unit, for carrying out demodulation operation to the described data message received, obtains the soft bit information after demodulation;
Decoding unit, for when the transmission channel of described data message is HS-SICH or E-UCCH, takes out corresponding data to described soft bit information and carries out Reed-Muller decoding generation maximum likelihood value and time maximum likelihood value;
Computing unit, obtains described confidence value for adopting described maximum likelihood value and time maximum likelihood value to calculate.
11. devices according to claim 10, it is characterized in that, described computing unit, for obtaining described confidence value by following formulae discovery: Z=[abs (maximum likelihood value)-abs (secondary maximum likelihood value)]/abs (maximum likelihood value).
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| CN201110088544.4A CN102740316B (en) | 2011-04-08 | 2011-04-08 | The detection method of DTX state and device |
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| CN105491591A (en) * | 2014-09-17 | 2016-04-13 | 中兴通讯股份有限公司 | DTX detection method, device and base station |
| CN108900277B (en) * | 2018-04-23 | 2020-07-07 | 中国科学院自动化研究所 | DTX detection method and system based on 5G communication network |
| US11363578B2 (en) | 2020-03-24 | 2022-06-14 | Hong Kong Applied Science And Technology Research Institue Company Limited | Method and device for detecting discontinuous transmission (DTX) for small block encoded signals |
| CN113454937B (en) * | 2020-07-07 | 2023-09-26 | 香港应用科技研究院有限公司 | Method and apparatus for determining physical uplink control channel PUCCH discontinuous transmission DTX in wireless communication system |
| US11197279B1 (en) | 2020-07-07 | 2021-12-07 | Hong Kong Applied Science and Technology Research Institute Company Limited | Method and an apparatus for physical uplink control channel (PUCCH) discontinuous transmission (DTX) determination in a wireless communication system |
| CN114258060B (en) * | 2020-09-24 | 2023-10-20 | 大唐移动通信设备有限公司 | DTX detection method, DTX detection device and processor readable storage medium |
| CN113597745B (en) * | 2021-01-07 | 2023-07-25 | 香港应用科技研究院有限公司 | Method and apparatus for assisted detection of Discontinuous Transmission (DTX) by noise estimation |
| US11375486B1 (en) | 2021-01-07 | 2022-06-28 | Hong Kong Applied Science And Technology Research Institute Co., Ltd | Method and device for detecting discontinuous transmission (DTX) assisted by noise estimation |
| CN114650122B (en) * | 2022-05-18 | 2022-08-02 | 成都爱瑞无线科技有限公司 | Physical uplink shared channel discontinuous transmission detection method, device and storage medium |
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| US6904557B2 (en) * | 2003-01-31 | 2005-06-07 | Nokia Corporation | Discontinuous transmission (DTX) detection using decoder metric |
| US7730381B2 (en) * | 2004-06-09 | 2010-06-01 | Qualcomm Incorporated | Erasure detection and power control for a transport channel with unknown format in a wireless communication system |
| US8086257B2 (en) * | 2005-08-11 | 2011-12-27 | Alcatel Lucent | Dedicated control channel detection for enhanced dedicated channel |
| US7782820B2 (en) * | 2006-09-26 | 2010-08-24 | Alcatel-Lucent Usa Inc. | Method of detecting discontinuous transmission (DTX) and method of generating a signal metric for use in DTX detection |
| US8331301B2 (en) * | 2007-08-14 | 2012-12-11 | Ntt Docomo, Inc. | Communication control method, mobile station and base station |
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